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Comparitive Study Of Types Of Wireless Networks

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This article discuses about the various types of wireless networks and the speed, distance of each type of the wireless networks.


Narrowband Wireless LANS keep the radio signal frequency narrower and an ability to pass the information along the narrower range. Though the distance through these LANS are reasonable but still speeds available aren’t adequate enough fot the corporate users. The major problem that would ocur is interference. But it can be overcome by allowing individual user onto inividual frequencies.


PCS comprises of a entire range of mobiles, portable and auxilary communication services for both business and personal usage. There are 2 types of PCS as explained below

a. NARROWBAND PCS: The size of the spectrum is smaller than broadband PCS. Narrowband PCS applications include paging, text mesaging, wireless email, wireless telemetry.

b. BROADBAND PCS: This type of PCS has larger spectrum compared to narrowband PCS. Broadband PCS application include all Mobile Telephone services and Mobile Data Services. All these Mobile set of services are available to the users via small. portable, multifunctional devices like digital camera, cellphones etc.

3. SATELLITE: Using satellite networks, the speed would be higher ranging around 1-2 Mbps for upload and download correspondingly. The great advantage of satellite networks are for their huge coverage area, The major drawback of these networks is the delay that exists while connecting. So these networks are found to be nearly dumb when dealt with the bursty traffic.

4. INFRARED WIRELESS LANS: Infrared wireless LANS though have a shorter available range, their speed range are increasing from 115Kbps to 4Mbps. In the near future, usage of Very Fast InfraRed (VFIR) may increase the speed upto 16Mbps. These type of LANS are used in Laptop to PDA transfers and between laptops.

5. SPREAD SPECTRUM WIRELESS LANS: These LANS are a wideband radio frequency technique using LANS. These LANS are both reliable and secure. The most popular WLAN used is 802.11b that runs upto 11Mbps, but the 802.11g specification can boost it upto around 22Mbps.The 802.11a with 5Ghz range can run a bandwidth around 50Mbps which can increase to 100Mbps in the near future. But the distance is less thanwhat we get with 802.11b & 802.11g 2.4Ghz range, (i.e) around 300 feet or so. Usually considering these factors 802.11a is used in a shorter distance outdoor regions while 802.11b/g are used indoors.

K.Murali graduated from St.Peter’s Engineering College, affiliated to Chennai University, India in Electronics and Communication Engineering in 2004. He has started his career as a Software Engineer in Net-O2 Technologies, Chennai, India. He has presented technical papers on Bio-Medical Engineering, Digital Wireless Communication, Tele-Medicine, and Spread Spectrum Techniques. His current research interests are in the areas of Biometrics and Wireless Mobile Internet.




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July 8th, 2012 at 3:34 pm

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