This website uses cookies to ensure you have the best experience. Learn more

Wireless Area Networks Essay

1978 words - 8 pages

Wireless Area Networks

Wireless technology has become an increasingly crucial part of today's world. From health care and retail to academia across the world, wireless systems are improving the rate and ease with which data is sent and received. Two specific examples of the wireless technology used today personally and professionally are local area networks (LAN) and personal area networks (PAN).

A wireless local area network, or LAN is a flexible data communications system implemented as an augmentation to, or an alternative for a, wired local area network. These networks rely on electromagnetic airwaves to transmit and receive over a defined area, usually a few hundred feet. (Yahoo-wireless) In most cases, a wireless transmitter will be connected directly to a wired land network using Ethernet cables. Once the network feed has been connected to the transmitter, and a constant power supply is established, a steady stream of radio, or infrared waves with be produced (both are electromagnetic waves). The vast majority of wireless LAN systems tend to rely on radio waves as the carries for their signals, because infrared waves tend to have a shorter distance at which they are able to transmit, and are more easily interrupted. Radio waves, or radio carriers as they are referred to, transfer data through modulations of the carrier signal. The addition of data to a radio carrier causes the signal to occupy more than a single frequency. Once data is imprinted onto the radio signal it is a simple reversal of the transmitting process that allows the information to be decoded by a receiving station. (Rho Wireless)

Radio waves offer another benefit to the wireless system in addition to their range. With radio signals it is possible for multiple carriers to exist in the same space at the same time without interfering with each other. The key to making this possible is variation of frequencies. As long as concurrent frequencies are no being broadcasted in a given area, it is possible to have any number of radio transmissions taking place at a given time. One might ask with countless number of transmissions that could be occurring at a given time how is it possible to focus on just one stream of data? The answer again is achieved through radio frequency characteristics. Once data has been encoded into a given radio carrier, all one has to do to extract the information is have a receiver tuned into one specific frequency, while rejecting all others. These receiving and transmitting nodes are known as access points. In typical wireless LAN settings, these access points are in the form of small rectangular transmitting stations. Receiving access points, or LAN adapters, defined using 802.11EE coding, are implemented as PC cards in notebooks, palm pilots, and desktops, or as additional access points that serve to extend the area of the network. These adapters provide an...

Find Another Essay On Wireless Area Networks

Investing in the Future: Why the Medical Field Should Invest in Wireless Networks

1073 words - 5 pages Protection of Wireless Networks Setting security policy is important for a wireless network. Improvements in the security of wireless technology will guarantee its continued safe use, and system administrators’ duties are to take measures against unauthorized access. A media access control address (MAC address) is an identity number assigned to each network device. Most Wi-Fi access points and routers come with a function called MAC address

Telehealth and telemedicine - University - Assignment

1108 words - 5 pages Nova Southeastern University College Of Osteopathic Medicine Biomedical Informatics Program Written Assignment 1 MI-6415- Information Technologies in Medicine and Telehealth You are the CIO of ACME Hospital in a rural underserved area. Your HCO recently received resources from a wealthy investor in the community to upgrade the hospitals communications system to a wireless platform. The boards of directors are not convinced this is a

Trends In Wireless Technology

958 words - 4 pages networking. IEEE 802.11 standard supports transmission in infrared light and two types of radio transmission within the unlicensed 2.4GHz frequency band: Frequency Hopping Spread Spectrum (FHSS) and Direct Sequence Spread Spectrum (DSSS). The followings are development of wireless standards: Local Area Networks (IEEE 802) Wired Ethernet (IEEE 802.3) Wireless Ethernet (IEEE 802.11) High Rate Wireless Ethernet (IEEE 802.11b) Mode 2.4

Compatibility of Wireless Technology

1165 words - 5 pages ), Code division multiple access (CDMA) and Time division multiple access (TDMA) which are used for networks such as 2G, 2.5G and 3G. Steps are being made towards implementing 4G technologies. The 4G technologies and the Wideband-CDMA are going to be interoperable so that wireless services providers and wireless gadgets can be compatible with one another. Through the use of technologies such as software defined radios, future technology innovations

Wireless Network Security

3559 words - 14 pages the Internet seems to validate Metcalf's law. It then seems reasonable that eliminating physical constraints to connecting to a network would provide value by allowing more devices to be connected to a network regardless of physical location. Wireless networks provide that ability. Wireless networks operate over the full spectrum of network topographies. These topographies include: Personal, Local, Controller, Metropolitan, and Wide area

Innovative Field in Computer Science Research is Wireless Sensor Networks

1688 words - 7 pages consisting of spatially distributed autonomous devices using sensors to monitor physical or environmental conditions. Some of the available standards include 2.4 GHz radios based on either IEEE 802.15.4[low-rate wireless personal area networks (LR-WPANs)] or IEEE 802.11 [wireless local area network (WLAN)] standards or proprietary radios, which are usually 900 MHz. The emergence of wireless sensor networks in the recent years can be characterized

Wirelenss Mobile Networks: Design and Performance

754 words - 4 pages Wireless networks become part of daily life. Day by day, every hotel, mall, cafe, restaurant etc. are covered by wireless internet zones. Not only laptop computers and PDAs are used to connect to wireless networks, but also some of the new mobile phones are also equipped with wireless network cards to connect to the wireless access points to get high-speed Internet access. In order to extend the limited range of wireless access points, multiple

Wireless Networking

1396 words - 6 pages dynamic and constantly changing type of networking that is capable of providing quick, easy access between computers in virtually any sort of application.At the start of this technology's development, wireless networks were not available for such broad applications because they were slower, more expensive, and often the result of a necessity driven by risk or architectural drawbacks. For example, if a building's walls did not support the cabling

Wireless Technologies Today

1487 words - 6 pages Wireless Technologies Today Everyday we as a society employ our wireless technologies throughout the day, sometimes even subconsciously. We wake up and check our cell-phones and PDA’s for information concerning the success of our day. We get to our respective workplace and our company’s wireless technologies, such as implemented wide area networks for quick and accurate communication of information between corporate officers or for

Market Analysis on Wireless Business Growth

1602 words - 6 pages U.S. will send only 10 billion in 2002. As mentioned in the previous section, this lag is primarily due to the incompatible wireless technology standards (TDMA, CDMA and GSM) used in the U.S.Barriers of Wireless Internet Market GrowthThere are three key potential barriers in inhibiting the growth of wireless Internetbusiness. These barriers are identified as* Incompatible wireless networking standards* Security gaps in wireless area networks

The insecurities surrounding wireless networks with a brief background on how wireless networks work

2362 words - 9 pages about their daily routines paying no attention to the fact that a hacker could be accessing their whole network. This paper will talk about the insecurities surrounding wireless networks with a brief background on how wireless networks work.Wireless NetworksWireless Local Area Network technologies allow us to finally connect multiple users to share Internet connections without messy and expensive cable installation procedures. WLAN networks make

Similar Essays

Investing In The Future: Why The Medical Field Should Invest In Wireless Networks

1264 words - 6 pages be flexible to work with other co-workers at the same time. Software developers can pop their laptops out of their workstations and walk down the hall to work with colleagues [3]. Employees can easily access the network and so wireless networks make a comfortable environment for them to work. In addition, Abhijit Mandal, Anupam Kumar Asthana, Lalit Mohan Aggarwal, a group of radiologists, agree wireless local area networks provide efficient

Investing In The Future: Why The Medical Field Should Invest In Wireless Networks

1140 words - 5 pages and it also can bring computer users to conveniently access the Internet in any place because wireless networks do not require any cable. Overall, Wi-Fi is constantly evolving, and wireless Local Area Networks (LANs) are developing faster, becoming smarter and more cost effective. These advantages satisfy hospital demands. Cost of Wired and Wireless Networks: Setting up a wireless network in a large facility requires multiple routers and access

Ict Advancement Essay

1785 words - 7 pages called radio waves. This implementation takes place at the physical level (layer) of the OSI model network structure. Contents 1 Types of wireless networks 1.1 Wireless PAN 1.2 Wireless LAN 1.3 Wireless mesh network 1.4 Wireless MAN 1.5 Wireless WAN 1.6 Mobile devices networks Types of wireless networksWireless PANWireless personal area networks (WPANs) interconnect devices within a relatively small are, that is generally within a person's reach For

Information Technology – Structure Of Data

1139 words - 5 pages , and easy to use. Users of wireless local area network (WLAN) devices have flexibility to move their laptop computers from one place to another within their offices while maintaining connectivity with the network. Wireless personal networks allow users to share data and applications with network systems and other users with compatible devices, without being tied to printer cables and other peripheral device connections. Users of handheld devices