Wimax vs Wifi Essays

Wimax vs Wifi Essays Wimax vs Wifi Paper Wimax vs Wifi Paper WiMAX or Wi-Fi: The Best Suited Candidate Technology for Building Wireless Access Infrastructure order to highlight that which technology will be better to build a wireless access infrastructure. The first part of the paper examines the both of these wireless technology in order to understand both technologies and their underlying concepts. Then, I have discussed some key characteristics to compare the both of these technologies. The last part concludes and presents a conclusion of which will be the best technology to build a wireless access infrastructure. II. OVERVIEW OF THE CANDIDATE TECHNOLOGIES. 2. 1 Wi-Fi The dream to network PCs and other devices without the cost and complexity of cable infrastructures has driven the rapid growth in the wireless market over the last few years. Wi-Fi is one of the wireless technology which appeared early in the wireless market. Wi-Fi is based on the IEEE 802. 11 wireless local area network (WLAN) specification. Actually it was designed to be used indoors at close range for example home user and office environment. The main goal of Wi-Fi technology is to provide service for mobile computing device like laptop. But recently it is used for more services for example consumer device such as televisions, digital cameras, and DVD players. A user with a mobile computing device such as a laptop, cell phone, or PDA which is Wi-Fi enabled can connect to the global Internet when it is within in range of an access point. The region which is covered by one or more access points is called a hotspot. Hotspots can range from a single room to thousand of square feet’s of overlapping hotspots. Wi-Fi can also be used to create a mesh network. Wi-Fi also allows connectivity in peer-to-peer (wireless ad-hoc network) mode, which enables devices to connect directly with each other [1]. This connectivity mode is useful in consumer electronics and gaming applications [1]. Wi-Fi products can use different radio frequencies [2]: The 802. 11a standard uses 5 GHz in an AP-to-AP interlink. Abstract: This paper presents a description of the existing wireless technology Wi-Fi and WiMAX, and try to compare Wi-Fi (IEEE 802. 11) and WiMAX (IEEE 802. 16), with respect to which technology provides a better solution to build a wireless access infrastructure. Each technology is evaluated based on some key characteristics. This paper concludes with a statement of, which technology will be the best and most cost effective solution to end user. I. INTRODUCTION With the help of many expert communication engineers IEEE has developed various wireless standards in a hierarchical fashion. Some of the deployed wireless standards are: 802. 15 (Bluetooth), 802. 11 (Wi-Fi), and 802. 16 (WiMAX) promoted by WiMAX forum. Recently a new standard, 802. 20 for WANs has been proposed, which is currently under development. Each of these IEEE standards has been deployed to fulfill certain criteria and they complement each other. IEEE 802. 11 also known as Wi-Fi standards has had a lot of commercial success, for this reason now the focus of wireless networking shifting to the wide area market. Wi-Fi has been optimized to address the requirements for home or office connectivity but the wide area market is still open to grabs. So to grab the market the low cost wireless which appears is WiMAX, short for Worldwide Interoperability for Microwave Access, is positioned as solution for outdoor and long-range last-mile solutions. Many service providers had adopted this technology as a quick and cheap option to provide connectivity between access points or base stations and their backbone network. The main goal of WiMAX is to provide cheap and fast connectivity of both voice and data communication to remote and difficult terrain locations. With the increasing market demand for WiMAX, it is now regularly compared with Wi-Fi. While both technologies have some identical technical characteristics, however they are approaching the wireless space from completely different perspectives. The purpose of this paper is to provide a technical and market comparison of Wi-Fi and WiMAX technologies in Figure 1: Wi-Fi Network ? The 802. 11b and 802. 11g standards use 2. 4 GHz. Different frequency bands are used by the 802. 11a, 802. 11b and 802. 11g standards; Different devices using these different frequency bands do not interfere with one another. However, portable devices using different bands cannot communicate with each other, for example an 802. 11a radio cannot communicate with an 802. 11b radio. The most commonly used standard in the Wireless LAN are the 802. 11b and 802. 1g standards because of their interoperability and the greater range option that they achieve in the 2. 4-GHz band. Each standard also use different types of radio-modulation technology, which is as follows [2]: The 802. 11b standard uses direct-sequence spread spectrum (DSSS) and supports bandwidth speeds up to 11 Mbps. The 802. 11a and 802. 11g standards use orthogonal frequency division multipl exing (OFDM) and support speeds up to 54 Mbps. Because OFDM is more suitable to outdoor environments and interference, that’s why it is commonly used for Wireless LAN infrastructure. 2. 2 WiMAX: IEEE standard 802. 6, also known as WiMAX, is a technology for last-mile wireless broadband as an alternative to cable and DSL and where the cost is high. It’s intended to deliver high speed data communication, and it also has the ability to maintain dedicated links and VoIP services at a reliable and high quality speed. Figure 2: WiMAX Network Not only it supports â€Å"last mile† broadband connectivity to individual home or business locations but also its data rates are comparable with cable and Digital Subscriber Line (DSL) rates. Many telephone companies also desire that WiMAX will be a replacement for their aging legacy wired networks. In fact, it is looked as the wireless replacement for a wired broadband connection. WiMAX has the ability to allow a subscriber to connect to a wireless Internet service provider even when they roam outside their offices or homes. With the large coverage range and high data transmission rate WiMAX’s attributes open the door of the technology to a variety of applications. WiMAX can be used as a backbone for IEEE 802. 11 hotspots for connecting to the global world, as well as a subscriber can connect WiMAX enabled mobile devices such as laptops PDA or cell phones directly to WiMAX base stations without using IEEE 802. 11. Currently many service providers, providing a DSL or T1/E1 service for a business customer to a relatively remote location or outer suburbs can take several months and the cost associated with it is very high. With the help of WiMAX, a service provider can provide that service in a short time and in a very cost effective way [3]. One of the main application of the WiMAX is that it can be used in disaster recovery scenes where the wired networks have broken down. In recent many disasters, WiMAX networks were installed to help in recovery missions [4]. Similarly, WiMAX also be used as a backup links where the traditional wired links breaks. WiMAX mainly operates in two frequency ranges. One is high frequency, which is between 11 – 66 GHz and another one is low frequency, which is sub 11 GHz [3]. Line-of-sight is very essential when operating in the high frequency range. This frequency range allows this wider channel, resulting in very high capacity links. For the low frequency range (sub 11 GHz) non line-of-sight is essential. WiMAX, with a theoretical data rate of 70 Mb/s in 20 MHz channels (2-11GHz spectrum) , allows a few hundreds of DSL connections but it operates up to 124Mbps in the 28MHz channel (in 10-66GHz), [5]. The maximum range WiMAX, covered is about 50 km [5]. But in practice this range may be decrease to 20 km and even 8 km when there are obstacles [5]. 3. 1 Efficiency Efficiency of wireless technology is measured in terms of bandwidth and latency. Efficiency is a major issue to determine what type of applications can be run on a network. A lessbandwidth network only feasibly for small application and normally support simple data application for example transferring text files. A higher bandwidth network normally used for big application such as audio and video and many more powerful applications. Another major issue in case of real-time applications like voice is latency which is very much crucial issue. The maximum range of latency should not be more than 20 ms, anything higher than that be warring for establishing echo free wireless network. 3. 2 Maximum Range Maximum range is calculated from the obtained distance between the two base stations, and like cell phone another major issue must consider here that the technology must have the capability to support hand-off between base stations without loosing connection from the global world. Maximum coverage range is a major issue, the reason behind that, it determines how long a contiguous wireless area can be? Also, maximum coverage range of wireless technologys is very much crucial according to cost, since operators can reduce their initial capital expenditures if they can give the coverage of the same area with smaller number of base stations. 3. 3 Dependability Dependability is defined as how much a wireless technology is dependable to the end user. Whether end user think that is it reliable to use or not? Dependability measure with few important metrics like average number of packet loss, average number of disconnects of calls, and whether the wireless technology is hampered by environmental issues such as line of sight, weather, etc. Dependability is very crucial because some applications may require a reliable connection. If a connection is not dependable, in that case packets may loss and that affect the network for that reason the speed of the network will decrease. This would have certainly impact on the performance of any applications, hence decreasing the applications that will use on the wireless network. . 4 Security Today’s internet is open for all. And user exchange many personal data in internet. So normally end user wants security. Security is obtained from the level of encryption of the data and the authentication of the device is provided by each technology. For many applications such as exchanging bank information require a secure connection to transmit confiden tial information. Mainly the end user will not want to expose themselves and they also want that the secret information not being viewed by unauthorized individuals. That’s why security is needed in wireless connection. III. KEY CHARACTERISTICS OF WIRELESS TECHNOLOGY This paper focuses on the hypothesis that which wireless technology, WiMAX or Wi-Fi provides a better solution in the wireless access infrastructure. Whether one wireless technology provides a better solution than any other or whether a combination of technologies is needed to create the desired infrastructure. The key characteristics for which the most powerful next generation wireless technology (WiMAX and Wi-Fi) is evaluated in this research paper are: efficiency, maximum range, dependability, security, market issue and mobility. These six key characteristics are the standard issue which will be used to compare these two wireless technologies. 3. 5 Mobility Mobility is one of the major issues in case of building wireless access infrastructure. It is the speed of the mobile access point at which the technology can remain connected to the global world without losing packets or service interruption. Naturally, a wireless infrastructure environment needs to be mobile to provide connection to the end user at any place they visit. The network must sustain connection at vehicular speeds. 3. Market comparison The last characteristics to consider when evaluating wireless technology is a market. Actually the popularity of any technology is determined by the market. Mainly markets certify a technology whether it is accepted by end user or not. So based upon the market we can decide which technology is most attractive to the wireless world IV. Wi-Fi VERSUS WiMAX 4. 1 Radio Technology: WiMAX differs from Wi-Fi in the radi o technology sector. The IEEE 802. 11 WLAN standards describe four radio link interfaces that operate mainly in unlicensed radio band having range from 2. G to 5 GHz [9]. The WiMAX 802. 16a standard released in January 2003 operates between 2 GHz and 11 GHz [9]. The lower frequency bands support Non-line-of-sight (NLOS) for that reason customer unit need not be aligned with base station. Wi-Fi mainly operates in unlicensed frequency bands, but WiMAX can operate in both licensed and unlicensed spectrum. Within IEEE 802. 16a’s 2-11 GHz range, four bands are most attractive [9]: * Licensed 2. 5-GHz MMDS * Licensed 3. 5-GHz Band: * Unlicensed 3. 5-GHz Band * Unlicensed 5 GHz U-NII Band. 4. 1. 1 Radio transmission Modulation techniques: The IEEE 802. 1b radio link uses a technique direct sequence spread spectrum that is called complementary coded keying (CCK) for radio transmission [9]. Bit stream is mainly processed by a special coding and modulated with the technique called Quad rature Phase Shift Keying (QPSK). The 802. 11a and 802. 11g uses the radio link technology 64-channel orthogonal frequency division multiplexing (OFDM) [9]. Here the bit streams is encoded on the 64 sub carriers using Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), or one of two levels of Quadrature Amplitude Modulation (16-, or 64- QAM) [9]. The IEEE 802. 16a specifies three techniques for radio link [9]: * SC-A: Single Carrier Channel. * OFDM: 256-Sub-Carrier Orthogonal Frequency Division Multiplexing. * OFDM-A: 2,048-Sub-Carrier Division Multiplexing. Orthogonal Frequency 4. 2 Efficiency: Maximum channel bandwidth for Wi-Fi is 25 MHz for IEEE 802. 11b and 20 MHz for either IEEE 802. 11a or g networks [9]. The maximum bit rates it’s providing is 54 Mbps. Wi-Fi has latency in the range of 50 ms hence little bit higher latency. In WiMAX, the channel bandwidths are in the range of 1. 25 MHz to 20 MHz [9]. Basically there has been lots of confusion regarding the actual bit rate of a WiMAX channel. But many articles give a range in of 70 M or 100 Mbps, basically exact transmission rate depends on the assigned bandwidth of the channel. WiMAX have latency in between the range of 25 to 40 ms, quite considerable range. Now have a close look at the Bandwidth efficiency of the both technologies. Basically it is measured by the number of bits per second that can be carried on one cycle of radio bandwidth (i. e. bps/Hertz). Lets have a data rates supported on its 25 MHz channel (1 M to 11 Mbps), 802. 1b have bandwidth efficiency in between 0. 04 to 0. 44 bps/Hertz [9]. In 802. 11 a or g on its 20 MHz have a transmission rate from 6 M to 54 Mbps yields a bandwidth efficiency in between . 24 to 2. 7 bps/Hertz [9]. In case of WiMAX, for 70-Mbps transmission rate on a 14-MHz radio channel yields bandwidth efficiency up to 5- bits/Hertz [9]. Basically the bandwidth efficiency decreases when the tran smission range increases. 4. 3 Maximum Coverage Range: OFDM modulation has a high spectral effectiveness that why WiMAX ranges 8 km (NLOS) to 50 km (LOS) [5]. It handles many users who are widely spread out. Mesh topologies and smart antenna techniques can be used to improve the coverage. The OFDM designed for the BWA and main goal is to provide long range transmission. 802. 16 is designed for high power OFDM used to maximize coverage up to tens of kilometers [5]. In contrast, IEEE 802. 11 standard have a basic CDMA and OFDM approach with a quite different vision. It required very low power consumption of energy that whys it can support very limited range of coverage. It is mainly designed for indoor use. Optimize range of this technology is around 100 meters [5]. 4. 4 Security: One of the major issues that differentiate from Wi-Fi to WiMAX is security. It’s a major issue because it protects transmissions from eavesdropping. But security has been one of the major lacking in Wi-Fi, encryption is optional here. But better encryption techniques are now available some of the different techniques used are [9]: Wired Equivalent Privacy (WEP): An RC4-based 40- or 104bit encryption technique. Wi-Fi Protected Access (WPA): A new standard from the WiFi Alliance that uses the 40- or 104-bit WEP key. IEEE 802. 1i/WPA2: It is a IEEE standard which will be based on a more robust encryption technique called the Advanced Encryption Standard. WiMAX is designed for public network so security is very much crucial here. So all the data that is transmitted in WiMAX network is virtually encrypted. The main encryption technique that is used here is 168-bit Digital Encryption Standard (3DES), the s ame encryption also used on most secure tunnel VPNs. There are also plan to include the Advanced Encryption Standard (AES) in WiMAX to maximize the security. 4. 5 Mobility Management Mobility management is supported by WiMAX. The latest IEEE 802. 16e is made for Mobile WiMAX. This standard supports mobile capability with the support of hand-offs capability, mainly for users when they moved between cells. Its support data rates up to 500 kbps, equivalent to the highest speed cellular offerings (e. g. Verizon Wireless’ 1xEV-DO service) [9]. Currently mobility management is not supported by Wi-Fi. But recently IEEE has begun to development of a roaming standard for Wi-Fi. However, WLAN switch vendors like Cisco, Aruba, and Airespace have developed their own proprietary hand-off protocols [9]. 4. Market Comparison Up to this point we have focused on technical issues here we consider, some market issues of these two products. Some market oriented works have been established for Wi-Fi service. The two examples are Wireless ISPs and Wi-Fi mesh networks. 4. 6. 1 Wireless ISPs (WISPs) The idea behind Wireless ISP (WISP) is to provide an Internet access service using WLAN technology and a shared Internet con nection in a public location designated a hot spot. TMobile and Wayport are currently providing this type of service [9]. But it have two problems, one is technical and another one is business oriented. From a technical viewpoint, to access the internet you have to be within the hot spot. From a business viewpoint, users have to pay monthly basis for the internet then the users have to be in the hot spot always to access the internet which is not a feasible solution. So markets of wireless ISP are in a threat now. 4. 6. 2 Wi-Fi Mesh Network Wi-Fi mesh networks are mainly used to support public safety applications and also to provide Internet access to end users. However, mesh technologies are not within the range of the Wi-Fi standards. 4. 6. 3 WiMAX Market The market goals of WiMAX not clear at the moment. But in a sense we can say that the major goal will be broadband wireless access or Wireless DSL. But it will succeed only if it provides lower cost service and also provide some extra features which the other broadband like DSL do not provide. WiMAX compatible chipsets first appeared in late-2004 by the Intel and consumer devices costing $100 or less [9]. But in case of WiMAX, before investing in this field, they have to think and analyze that whether they have enough demand in the market or not. 4. 7 Quality of Service (QoS) Wi-Fi is based on a contention based MAC (CSMA/CA). Hence no guaranteed QoS is provided mainly it can support best offer services. The Standard does not permit for different service level for each user. There is a plan to incorporate QoS in the 802. 11-e standard. In this standard two operating modes will be included to improve service for voice one is Wi-Fi Multimedia Extensions (WME) and another one is Wi-Fi Scheduled Multimedia (WSM) QoS in IEEE 802. 16 is based on a request/grant protocol. Its support multiple QoS which is build in MAC. It is designed to supports different service levels such as ,T1/E1 for business and best effort to consumer. This protocol support delay sensitive services such as voice and video. The dynamic TDMA based technique allows the suitable support for multicast and broadcast. In the below the key difference between Wi-Fi and WiMAX is described Table:1 Comparison between IEEE 802. 11 and IEEE 802. 16 802. 11 (Wi-Fi) Primary Application Range Coverage and Wireless LAN 802. 16 (WiMAX) Wireless MAN mainly designed for broadband wireless Designed for outdoor NLOS performance Optimized for 50 km Mesh topology is supported MAC designed to support thousands of users Licensed and Unlicensed Band 2 GHz to 11 GHz Adjustable range from 1. 25 to 20 MHz

The Leeward vs. Windward Side of a Mountain

The Leeward vs. Windward Side of a Mountain In meteorology, leeward and windward are technical names for the directional sides of a mountain. The windward side is that side which faces the prevailing wind (upwind), whereas the leeward, or lee side, is the side sheltered from the wind by the mountains very elevation (downwind). Windward and leeward arent just arbitrary terms, they are important weather and climate factors. One is responsible for enhancing precipitation in the vicinity of mountain ranges, and the other, for withholding it. Windward Mountain Slopes Give Air (and Precipitation) a Boost Mountain ranges acts as barriers to the flow of air across the surface of the earth. When a parcel of warm air travels from a low valley region to the foothills of a mountain range, it is forced to rise along the slope of the mountain as it encounters higher terrain. As the air is lifted up the mountain slope, it cools as it rises (a process known as adiabatic cooling). This cooling often results in the formation of clouds, and eventually, precipitation which falls on the windward slope and at the summit. Known as orographic lifting, this event is one of three ways precipitation can form (the other two are frontal wedging and convection).   The Northwestern United States and the Front Range Foothills of Northern Colorado are two examples of regions that regularly see precipitation induced by orographic lift. Leeward Mountain Slopes Encourage Warm, Dry Climates Opposite from the windward side is the lee side the side sheltered from the prevailing wind. (Because prevailing winds in the mid-latitudes blow from the west, the lee side can generally be thought of as the eastern side of the mountain range. This is true most times but not always.) In contrast to the windward side of a mountain which is moist, the leeward side typically has a dry, warm climate. This is because by the time air rises up the windward side and reaches the summit, it has already stripped of the majority of its moisture. As this already dry air descends down the lee, it warms and expands (a process known as adiabatic warming), which causes clouds to dissipate and further reduces the possibility of precipitation. This occurrence is known as the rain shadow effect. It is the reason why locations at the base of a mountain lee tend to be some of the driest places on Earth. The Mojave Desert and Californias Death Valley are two such rain shadow deserts.   Downslope winds (winds that blow down the lee side of mountains) not only carry low relative humidity, they also rush down at extremely strong speeds and can bring temperatures as much as 50 degrees Fahrenheit warmer than the surrounding air. Katabatic winds, foehns, and chinooks are all examples of such winds. The Santa Ana Winds in Southern California are a well-known katabatic wind infamous for the hot, dry weather they bring in autumn and for fanning regional wildfires.

World War I's Technological innovations and its impact on modern Essay

World War I's Technological innovations and its impact on modern warfare - Essay Example Nationalism among European countries combined with growing tension and rivalries due to industrialization has led military buildups throughout the continent. Nations became aware of their neighboring nations and in response to this tension, England, France, and Russia formed an alliance which they called "Triple Entente". This alliance was aligned in preparation against Germany who allied with Austria-Hungary. Such alliances divided Europe with strict guarded borders thus the onset of an impending World War became virtually impossible to avoid. The beginning of war in Europe started when in 1914, Archduke Franz Ferdinand, heir of the throne of Austria-Hungary was assassinated. Serbia was suspected to be behind the killing. Austria-Hungary attacked Serbia but it was protected by its ally, Russia. Then Germany came to the rescue for the Austrian because they were the ally of Austrian-Hungary. Militaries from different countries came to the rescue for their respective allies and the conflict grew out of scale. In more than a month, Europe and its neighboring countries were engulfed in war. But the militaries of different nations were not perplexed. This is because each of them has their own weaponries and technology to defend themselves. British Admiral Jacky Fisher wrote in 1915 that, "The war is going to be won by inventions." Weapons never been seen before such as tanks, the zeppelin, poison gas, the airplane, the submarine, and the machine gun has nevertheless fired their way through. World War I suddenly drew upon electrical technologies that had been under development for decades. Radio has become essential for communications and its transmission of voice was developed rather than codes. Electricity also contributed on the advancement of war. Battleships or tanks, for example, did had electric signaling lamps, helm indicator, fire alarms, remote control for bulkhead doors and controlled whistles which all uses electricity. Guns and turrets and raised gun magazine ammunitions also uses electricity. Incandescent and carbon-arc searchlights became usable during nighttime navigation, long-range daytime and nighttime signaling illuminates enemy ships during night engagements. Some of the most technological advances World War I has innovated and created were meant for attack and defense. These were the following: Weapons of War: Submarines. Although they had been around for decades, submarines became powerful weapons and became potential threat to any ship that sailed in deep waters. Their torpedoes can sink any ship that would invade territorial waters and these ships have become every nation's weapons in the waters. But the use of submarines was without restrictions that in May 1915 German submarine torpedoed Lusitania, a non-combatant U.S. ship killing 1,195 people on board. From then on, allied ships and submarines were outfitted with sensitive microphones that could detect engine noise from enemy submarines and ships. They developed sonar, but its development came nearly during the end of war (Museum). Aeroplanes. Ten years before the eruption of World War I, the Wright brothers have just made a second flight of their first

Spirituality in Organizational Strategy Essay Example | Topics and Well Written Essays - 1250 words

Spirituality in Organizational Strategy - Essay Example Senior leaders of the organization should be able to embrace it strategically and use it as a determinant of organizational performance. A leader should have emotional intelligence which will help support the spirituality of an organization. Casey claims that if a leader does not have emotional intelligence, it will be hard for him of her to embrace spirituality in his organization (34-46). Recently, there has been a major debate on business and spirituality, where many leaders have advocated for a link between issues of the soul and corporate success. However, there is some irony in this spirituality and business juxtaposition if a leader decides to reflect upon the signs of corporate scandals that have been brought by multiple legal and ethical lapses that occur in any organization. However, one would be cynical to think that spirituality phenomenon is a reason of many contradictions in organizations. This paper aims to explain why spirituality in an organization is strategically i mportant and how leaders can use it as a determinant of organizational performance. Leaders often doubt spirituality that is used outside any religious meetings, and therefore, this paper will discuss useful objectives that can be internalized into an organization strategy and how organizational leadership can affect their success. A leader is someone who is capable of influencing his followers to behave or think the same way. Spirit on the other hand, can be defined as a vital force within living beings. If we combine the two terms, it suggests that a leader is someone who can understand and seek out his inner self as well as fosters the same meaning to his employees. Srivastra asserts that spirituality in leadership is an approach in leadership where a leader will strive to influence a sense of interconnectedness and significance among his employees (45-67). Spirituality in leadership therefore, involves principles and spiritual values in the workplace. If a leader is spiritual he will understand the significance of employees finding meaning in the work, which demonstrate a genuine concern for the particular person and not just workers. Spirituality in leadership will help assist employees find meaning in their duties by addressing important questions like the great purpose of their work as well as the worth of their work. Additionally, it will help them in defining their ethical values and principles, legacy and who they are in the organization. Therefore, a spiritual leader will try hard to make his workplace a community, consisting of employees with shared beliefs, values and traditions. Such leadership will also focus more diversity and transformation, rather than on people and power as well as controlling. It will also focus on inspiration and collaboration (Nandam 23-46). However, this does not mean that being a spiritual leader, a leader should adhere to a particular religion or attempt to convince his employees to pursue specific religious set of pri nciples. It is concerned more with the growth of the workers as an individual person, people who show off their compassion to their customers, superiors, employees and subordinates (Bubna 34-88). Spirituality in an organization is important because the employers in the workplace will be able to find the meaning of their lives. In the world today, most of the employees look up to their workplace as one of the ways of defining their lives as well as give meaning to their lives that is torn apart by modern way of living. For example, back then people lived as close knit family, including their extended family, but the world today has changed because nuclear family is not enough to give an employee emotional support and

The Electronics Industry in India :: miscellaneous

The Electronics Industry in India The Electronics industry is one of the fastest growing industries right from its origin. The profit brought out of this is much more compared to other olden industries. India is one among the largest economies in the world and has a good GDP among emerging economies. The birth and growth of this industry in India is quiet interesting. With large population and the potential consumer demand is almost unlimited and hence a strong growth performance could be expected. The base of this industry. Basically Indian market is a consuming market, it grows as people consume more. The liberalization of the economy by 1991 has helped to a rapid growth this helped the electronics industry in India as one of the most important and emerging markets. The start of this industry here dates back to early 1960’s.Electronics was primarily focused to develop in the filed of communication systems for radios, telephony, telegraphy, and television broadcast. A lot of importance was given for the augme ntation of defense capabilities. Till 1980’s the electronic sector was government owned. From there on the growth of the electronic industry took off due to economic changes resulting in the globalization of the economy. The electronic industry recorded a very high growth in subsequent years by 1990’s. Private, foreign investments were encouraged. This was the starting point of forex to pour in. Easing the Norms for the investment, reduction in duties and deli censing of several consumer electronic products marked attraction of foreign investors. The domestic circle response to this was also favorable to the government policies. Allowing this industry for the private sector enabled entrepreneurs build industries to meet suppressed demand. Improvements in this industry have not been only to a particular area but in each and every process right from acquiring the raw materials to the packed product. Long steps have been made in the area of consumer products, communication, biomedical instrumentation, networking and defense. This resulted in significant market growth by late 1990’s. The sales of some basic units increased three-fold .the main area of focus has now turned to design, Compact packing and to provide vale added service. Analyzing the strength of this industry it has a competitive advantage by providing high quality-low price, large trained manpower poll. The key strength being developed infrastructure as compared to the mechanical industry. The software technology parks that have been established are providing the necessary software orientation for this industry.

MCI WorldCom Scandal Essay

Introduction MCI WorldCom was one of the largest telecommunications companies in the world. Bernie Ebbers founded WorldCom in 1983, after that WorldCom began as a re-seller of long-distance telephone services. WorldCom is located at Mississippi. After Ebbers bought around 50 other small long-distance firms, he set his sight on MCI. Thus MCI WorldCom would have become the second biggest telecom service provider in 1997. MCI WorldCom was formed on September-15-1998. WorldCom merged with the $37 billion MCI Communications Corporations, the company’s operations were organized around three divisions: * MCI WorldCom * U.S. telecommunications * WorldCom International The MCI WorldCom division is the second largest long distance company in the United States (after AT&T). It has fibre optic network of 45,000-mile long, which provides local phone service in more than 100 markets and offers services such as data, Internet, and other communications services. UUNET WorldCom has a highly trusted & reliable backbone network which provides local access to the Internet to a reach of more than 1,000 locations in and around the United States, Canada, Europe, and the Asia-Pacific region. WorldCom International is not only a local but also facilities-based competitor in 15 countries outside the United States, connecting to the company’s overall global network to more than 5,000 buildings in Australia, Ireland, Germany, Hong Kong, Italy, Japan, Mexico Belgium, Brazil, France, The Netherlands, Singapore, Switzerland, Sweden, and the United Kingdom. Company – Timeline: Corporate founding 1983: Businessmen Murray Waldron and William Rector devise a plan to create a discount long distance provider called LDDS (Long-Distance Discount Service). 1985: Early investor Bernard Ebbers becomes the first chief executive officer of LDDS. 1989: LDDS becomes public through its first acquisition of Advantage Companies Inc. 1992: LDDS merges in an all-stock deal with discount long distance service provider Advanced Telecommunications Corp. MCI acquisition 1993: LDDS acquires long distance providers Resurgens Communications Group Inc and Metromedia Communications Corp. in a three-way stock. This creates cash transaction that becomes the fourth-largest long-distance network in the United States. 1994: LDDS continues its acquisition spree acquiring domestic and international communications network IDB Communications Group Inc. in an all-stock deal. 1995: LDDS acquires voice and data transmission company Williams Telecommunications Group Inc. for $2.5 billion and changes its name to WorldCom Inc. 1996: WorldCom merges with MFS Communications Company Inc. and UUNet Technologies Inc. 1998: WorldCom completes three mergers: with MCI Communications Corp. ($40 billion)—the largest in history at that time—Brooks Fiber Properties Inc. ($1.2 billion) and CompuServe Corp ($1.3 billion). Proposed Sprint merger 1 999: WorldCom and Sprint Corp. agree to merge. 2000: U.S. and European regulators block proposed merger with Sprint; WorldCom and Sprint terminate agreement. Accounting scandals & Bankruptcy 2002: A small team of internal auditors worked together secretly at WorldCom. During the night time, the auditors’ secret investigations revealed a $3.8 billion worth of fraud. WorldCom files for bankruptcy protection, listing some $107 billion in assets and $41 billion in debt, on a consolidated basis as of March 31. It was the largest such filing in U.S. history. 2003: The Company’s total assets had been inflated by about $11 billion. Creditors had lost faith in the organization. 2004: MCI officially emerges from bankruptcy, 21 months after filing the largest Chapter 11 case in history. 2005: Verizon Communications Inc. announces a $6.75 billion deal to buy MCI Inc. Former WorldCom Inc. chief executive Bernard J. Ebbers is found guilty of conspiracy, securities fraud and making false filings with regulators. Worldcom Top Management Team during Scandal: CEO – Bernard Ebbers CFO – Scott Sullivan Comptroller – David Myers Director of General Accounting – Buford â€Å"Buddy† Yates Pre-Scam Days At WorldCom LDDS changed its name to WorldCom in 1995. WorldCom was the second largest benchmarked long distance telecom provider in the USA and the biggest internet traffic carrier in the world, with a network stretching over 150,000km, and business presence in more than 65 countries. WorldCom faced explosive growth, at a scorching pace over the 15 years of its existence by acquiring many companies like MFS Communications Inc. and UUNet Technologies Inc. in 1996, MCI Communication Corp, Brooks Fiber Properties Inc., CompuServe Comp in 1998. In 2001, it made the largest merger with Intermedia Communication Inc., an internet and data services provider. With the acquisitions of UUNet and MCi, WorldCom had control over more than 50% of the Internet backbone infrastructure. Every acquisition led to higher stock price which in turn made way to finance another acquisition. The share price of WorldCom was at an all time high of $63.50, on June 18, 1999, with market value of $125 billion. Its value rose to $180 billion during the peak of the telecom boom. As long as the stock market was booming and the dot com bubble was expanding, no one cared to look into the fundamental stability of the company. Auditors also failed to perform thorough due diligence. WorldCom, in the late 1990’s was also an attractive takeover target for Nextel Communications, before the scandal. Scam – How it all happened? WorldCom, the second biggest long-distance telecom company in US and also the biggest carrier of Internet traffic in the world was the new economy company when it was launched. In its operation of 15 years, the company grew at a very rapid pace, majorly due to the ambition of its former chief executive officer (CEO) Bernard J. Ebbers. It majorly expanded by acquiring other smaller companies who had a potential to be their future competitors. The stock market supported them and the company growth was exorbitant and no one cared about the fundamentals of the company as it was giving high return year on year. Below mentioned is the chronological order of occurrence of events and the exposure of fraud. * March 2002 – The U.S. Securities and Exchange Commission (SEC) questioned WorldCom about its accounting procedures and about loans it had extended to its officers as it was curious about the rationale behind the offers. * April 2002 – The first sign of weakness came when company announced job cuts, the number was 3,700. Following the even, Standard & Poor’s, Moody’s and Fitch downgraded WorldCom’s credit rating and it was the beginning of the Justice department launching a probe into the scandal. * April 2002 – This month itself J. Ebbers resigned as CEO after the shocking revelation of lending of $339.7 million to Ebbers to cover loans that he took to buy his own shares. * June 25 – The Company revealed that improper accounting of $3.8 billion in expenses had covered up a net loss for 2001 and the first quarter of 2002. The company also announced that it planned to shed more than 20% of its workforce counting to be around 17,000 jobs. * June 26 – The case was filed by SEC against WorldCom alleging them for a securities fraud. It alleged that WorldCom’s top management â€Å"disguised its true operating performance† and â€Å"misled inve stors about its reported earnings†. Method that WorldCom adopted is been classified as an accounting scandal, the company used its balance sheet to boost revenues and profits while hiding expenditures. It did so by * Classifying ordinary day-to-day expenses and long-term expenses associated with the acquisition of capital assets as investments which led to WorldCom having a significant tax advantages. * WorldCom also tried to hide expenses to the amount of nearly $4 billion and instead showed them as profits in their account books. * Another ploy it employed was using WorldCom’s major operating expenses related to its â€Å"line costs†, the fees that it pays to third party telecom network providers for the right to access their networks. WorldCom capitalised these fees, terming them as investments, when, in fact, they were one of the most important day-to-day expenses. Financial experts pointed out that WorldCom’s accounting practices, made it impossible for investors to gauge the performance of the company. They not only overstated profitability they also misled the investors by the opaque nature of its regular operating performance. The shock for the people accentuated with revelation of Arthur Andersen, the disgraced auditing and consulting major as WorldCom’s auditor too. The WorldCom’s own internal audit department was the first one who unearthed the fraud of approximately $3.8 billion in June 2002. The company’s audit committee and board of directors were notified of the fraud and acted swiftly: Sullivan was fired, Myers resigned. By the end of 2003, it was estimated that the company’s total assets had been inflated by around $11 billion (WorldCom, 2005). Post-Scam Days At WorldCom Around 17,000 jobs were cut in order to save $1 billion. The company had yet to pay many of its creditors. Many of the small creditors included former employees, primarily those who were dismissed during June 2002. On August 7, 2002, the exWorldCom 5100 group was formed. It included former WorldCom employees with a common goal of seeking the benefits and full payment of severance pay under the WorldCom Severance Plan. The â€Å"5100† signifies the number of WorldCom employees dismissed in June 2002 before WorldCom filed for bankruptcy. In 2004, the company emerged from bankruptcy, with $5.7 billion in debt and $6 billion in cash. It was renamed MCI. About half of the cash was intended to pay various claims and settlements. Previous bondholders were paid 35.7 cents on the dollar, in bonds and stock in the new MCI company. The previous stockholders’ stock was cancelled, causing huge loss to stockholders. On February 14, 2005, Verizon Communications acquired MCI for $7.6 billion. On March 15, 2005 the CEO , Bernard Ebbers, was found guilty of all charges and convicted of fraud. He was accounted for the $11 billion accounting scandal, conspiracy and filing false documents with regulator. Many other officials were also charged with criminal penalties in relation to the company’s financial misstatements. These included former CFO Scott Sullivan (entered a guilty plea on March 2, 2004 to one count each of securities fraud, conspiracy to commit securities fraud, and filing false statements), former comptroller David Myers (pleaded guilty to securities fraud, conspiracy to commit securities fraud, and filing false statements on September 27, 2002), former accounting director Buford Yates (pleaded guilty to conspiracy and fraud charges on October 7, 2002), and former accounting managers Betty Vinson and Troy Normand (both pleading guilty to conspiracy and securities fraud on October 10, 2002). On July 13, 2005 Bernard Ebbers received a sentence of imprisonment for 25 years. At that time, Ebbers was 63 years old. On September 26, 2006, Ebbers surrendered himself to the Federal Bureau of Prisons prison at Oakdale, Louisiana, the Oakdale Federal Corrections Institution to begin serving his sentence. During March 2005, 16 of WorldCom’s 17 former underwriters reached settlements with the investors. During December 2005, MCI joined Microsoft Corporation by providing Windows Live Messenger customers â€Å"Voice Over Internet Protocol† (VoIP) service to make telephone calls. This was MCI’s last new product—- called â€Å"MCI Web Calling†. This product was renamed â€Å"Verizon Web Calling†, after the merger. Corporate governance Failure In 2002, when world’s second largest telecom giant WorldCom filed for bankruptcy at federal court in Manhattan, United States witnessed one of the largest accounting frauds in history. Former CEO of WorldCom, Mr. Bernie Ebbers was held responsible for orchestrating the USD 11 billion accounting fraud and sentenced to 25 years in federal prison on July 13, 2005. WorldCom fiasco is a clear case of corporate governance failure. How could a fraud of such enormity go unnoticed by the Board of Directors at WorldCom? What happened to industry watchdogs? In WorldCom’s case, most of the deviations from proper corporate behaviour resulted from the failure of Board of Directors to recognize and effectively deal with the aftermaths of â€Å"greed culture†. WorldCom’s former CEO Bernie Ebbers’ desire to build and protect his personal wealth was the driving factor behind the fraud. For this reason, he had to show continually growing net worth in order to avoid margin calls on his own WorldCom stock that he had pledged to secure loans [1]. While probing this enormous failure in corporate governance and what could have been done to evade it, we came across an interesting document entitled â€Å"Report of Investigation† dated March 31, 2003. This Report was prepared for, among others, the Federal Bankruptcy Court overseeing WorldCom case [1]. From the report, we have drawn various points to understand the corporate governance failure at WorldCom. Accounting Misstatements WorldCom made major accounting misstatements that hid the increasingly perilous financial condition of the company. The Report described the accounting tomfoolery as follows: â€Å"†¦ As enormous as the fraud was, it was accomplished in a relatively mundane way: more than $9 billion in false or unsupported accounting entries were made in WorldCom’s financial systems in order to achieve desired reported financial results.† Drivers of the fraud The motivating factor behind this fraud was the business strategy (personal) of WorldCom’s CEO, Bernie Ebbers. Here was a man who put his personal gain above organization’s growth. In the 1990s, Ebbers wanted to achieve spectacular growth through a series of acquisitions. But, there was a catch – He did NOT have the necessary resources to fund his acquisition binge. So, he used WorldCom stocks to accomplish his shopping (acquisition) spree. But, the most important thing was, WorldCom stock had to continually increase in value to be of any use to Ebbers personal agenda. He felt the need to prove ever-growing revenue and income. His only option to accomplish this end was financial gimmickry. However, he faced the age-old problem which all conmen face – It is difficult to sustain deception in the long run! Complicating Ebbers’ circumstances was an industry-wide slump in telecommunications. During this time, Wall Street had continuing expectations of double-digit growth for WorldCom. After all, they had accomplished so much in such a relatively short period of time. But, WorldCom needed time to learn managing the new businesses it had acquired. To continue on the path of double digit growth, WorldCom had to consolidate the acquired businesses and turn them into money minting machines. However, Ebbers did not have the backbone to stand up and accept that WorldCom needed time. Instead he went ahead and presented Wall Street what it expected from WorldCom – Ever-growing revenues and income even when in reality none existed. He fudged the company books and met Wall Street’s expectations. Another major reason motivating this fraud was Ebbers’ very obvious aspiration to build and guard his personal financial situation. For this reason, he had to show continually growing net worth in order to avoid margin calls on his own WorldCom stock that he had pledged to secure loans [1]. He did that. While most of the reports blame Ebbers for the entire episode, the Board of Directors are not blameless. WorldCom supported revisionist model of Corporate Governance – though the Board reigns (de jure), the imperial CEO rules (de facto). WorldCom’s corporate governance failure resulted in the following: * Company filed for bankruptcy * CEO was sentenced to 25 years of imprisonment * Shareholders saw their shares become useless * Lenders were strained to take losses on their loans * Employees lost jobs Court Ordered Fix The Bankruptcy Court directed the newly constituted Board of Directors and the newly appointed Corporate Monitor to fix this horrible example of corporate failure. The measures suggested.., * A corporate culture of openness, in which ethical conduct is encouraged and expected, as exemplified by the ethics pledge that the Company and the Corporate Monitor have developed and that senior management has signed * A corporate culture in which the counsel of lawyers is sought and valued; * Formalized and well-documented policies and procedures, including a clear and effective channel through which employees can raise concerns or report acts of misconduct References: 1. http://www.referenceforbusiness.com/history2/10/MCI-WorldCom-Inc.html#ixzz2IriwULfD 2. http://en.wikipedia.org/wiki/MCI_Inc. 3. http://www.fundinguniverse.com/company-histories/mci-worldcom-inc-history/ 4. http://www.washingtonpost.com/wp-dyn/articles/A49156-2002Jun26.html 5. http://www.ecommercetimes.com/story/45542.html 6. http://www.sec.gov/Archives/edgar/data/723527/000093176303001862/dex991.htm 7. http://www.frontlineonnet.com/fl1915/19150810.htm 8. http://www.guardian.co.uk/business/2002/aug/09/corporatefraud.worldcom2 9. http://www.nytimes.com/2002/07/22/us/worldcom-s-collapse-the-overview-worldcom-files-for-bankruptcy-largest-us-case.html 10. http://voices.yahoo.com/worldcom-scandal-look-back-one-biggest-225686.html?cat=3 11. http://www.nytimes.com/2002/07/22/us/worldcom-s-collapse-the-overview-worldcom-files-for-bankruptcy-largest-us-case.html 12. http://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=3&cad=rja&ved=0CDkQFjAC&url=http%3A%2F%2Fmoney.cnn.com%2F2005%2F03%2F15%2Fnews%2Fnewsmakers%2Febbers%2F&ei=yOkAUZbcKcbirAeVwIC4BA&usg=AFQjCNHSfWmXHV-ryl3POQ1NU_MMYLmvjA&bvm=bv.41524429,d.bmk 13. http://www.nytimes.com/2002/07/22/us/worldcom-s-collapse-the-overview-worldcom-files-for-bankruptcy-largest-us-case.html 14. http://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=3&cad=rja&ved=0CDkQFjAC&url=http%3A%2F%2Fmoney.cnn.com%2F2005%2F03%2F15%2Fnews%2Fnewsmakers%2Febbers%2F&ei=yOkAUZbcKcbirAeVwIC4 BA&usg=AFQjCNHSfWmXHV-ryl3POQ1NU_MMYLmvjA&bvm=bv.41524429,d.bmk

Police Corruption And Criminal Justice - 914 Words

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