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Download e-book for iPad: 802.11 WLANs and IP Networking: Security, QoS, and Mobility by Neeli Prasad

By Neeli Prasad

ISBN-10: 1580537898

ISBN-13: 9781580537896

ISBN-10: 1580537901

ISBN-13: 9781580537902

Instant neighborhood sector Networks (WLANs) provide practitioners a great way to accomplish community connectivity in tricky wiring components and supply better flexibility for relocating and increasing networks. this present day the main severe WLAN/Wireless IP (Internet Protocol) matters contain safeguard, mobility, and caliber of provider, and this sensible new source addresses those sizzling issues headon. The booklet offers pros a superb figuring out of vital criteria and provides quite a few networking concepts for his or her demanding initiatives within the box. in addition, practitioners locate advice on deployment, insights on interworking with 3rd iteration cellular communications structures, and discussions out there and enterprise facets of WLANS.

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Additional info for 802.11 WLANs and IP Networking: Security, QoS, and Mobility

Sample text

WLANs provide much higher data rates as compared to WWANs for slow mobile or static systems. 11a are also available. WLAN technologies are mainly used for wireless transmission of IP packets. Until now, in contrast to the WWANs, the WLANs provided network access as a complement to the wireline LANs. In the near future QoS-based WLANs are expected to come onto the market. 11e is working towards MAC enhancements. The purpose of the MAC enhancement is to enable the present MAC, CSMA/CA, to provide QoS.

UHF narrowband systems transmit on both licensed and unlicensed frequencies, and systems based on this technology operate at a higher power than spread spectrum systems, typically at 1 to 2 watts. Because of the higher power, these systems have the longest transmission range of all the WLAN technologies. However, these products have been hobbled by lack of vendor interoperability, lower speeds, and the requirement for site licenses for some of the licensed frequency bands. 5 Infrared Infrared technology is an invisible beam of light that uses signals much like those used in fiber optic links today.

M. Ebert, “Data Transmission by Frequency Division Multiplexing Using the Discrete Fourier Transform,” IEEE Trans. , Vol. COM-19, pp. 628–634, October 1971. [74] Zou, W. , and Y. Wu, “COFDM: an overview,” IEEE Trans. , Vol. 41, No. 1, pp. 1–8, March 1995. , “An Orthogonally Multiplexed QAM System Using the Discrete Fourier Transform,” IEEE Trans. , COM-29, pp. 982– 989, July 1981. , “HIPERLAN Radio Channel Models and Simulation Results,” RES10TTG 93/58. , “R2067 MBS - Mobile Broadband System,” ICUPC’93, Ottawa, Canada, October 1993.

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802.11 WLANs and IP Networking: Security, QoS, and Mobility by Neeli Prasad


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