| This article discuses about the various
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| | be higher ranging around 1-2 Mbps for
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| types of wireless networks and the speed,
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| | upload and download correspondingly. The
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| distance of each type of the wireless
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| | great advantage of satellite networks are
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| networks.1.NARROWBAND WIRELESS
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| | for their huge coverage area, The major
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| LANS:Narrowband Wireless LANS keep the
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| | drawback of these networks is the delay
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| radio signal frequency narrower and an
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| | that exists while connecting. So these
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| ability to pass the information along the
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| | networks are found to be nearly dumb when
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| narrower range. Though the distance
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| | dealt with the bursty traffic.4.
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| through these LANS are reasonable but
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| | INFRARED WIRELESS LANS: Infrared
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| still speeds available aren't adequate
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| | wireless LANS though have a shorter
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| enough fot the corporate users. The major
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| | available range, their speed range are
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| problem that would ocur is interference.
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| | increasing from 115Kbps to 4Mbps. In the
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| But it can be overcome by allowing
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| | near future, usage of Very Fast InfraRed
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| individual user onto inividual
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| | (VFIR) may increase the speed upto
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| frequencies.2.PERSONAL COMMUNICATIONS
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| | 16Mbps. These type of LANS are used in
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| SERVICES:PCS comprises of a entire range
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| | Laptop to PDA transfers and between
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| of mobiles, portable and auxilary
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| | laptops.5. SPREAD SPECTRUM WIRELESS
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| communication services for both business
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| | LANS: These LANS are a wideband radio
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| and personal usage. There are 2 types of
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| | frequency technique using LANS. These
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| PCS as explained belowa. NARROWBAND PCS:
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| | LANS are both reliable and secure. The
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| The size of the spectrum is smaller than
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| | most popular WLAN used is 802.11b that
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| broadband PCS. Narrowband PCS
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| | runs upto 11Mbps, but the 802.11g
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| applications include paging, text
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| | specification can boost it upto around
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| mesaging, wireless email, wireless
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| | 22Mbps.The 802.11a with 5Ghz range can
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| telemetry.b. BROADBAND PCS: This type of
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| | run a bandwidth around 50Mbps which can
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| PCS has larger spectrum compared to
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| | increase to 100Mbps in the near future.
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| narrowband PCS. Broadband PCS application
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| | But the distance is less thanwhat we get
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| include all Mobile Telephone services and
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| | with 802.11b & 802.11g 2.4Ghz range,
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| Mobile Data Services. All these Mobile
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| | (i.e) around 300 feet or so. Usually
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| set of services are available to the
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| | considering these factors 802.11a is used
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| users via small. portable,
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| | in a shorter distance outdoor regions
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| multifunctional devices like digital
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| | while 802.11b/g are used indoors.K.Murali
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| camera, cellphones etc.3. SATELLITE:
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| | graduated from St.
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| Using satellite networks, the speed would
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