Wireless Local Loops: Theory and Applications
Wiley, Aug 22, 2001 - Technology & Engineering - 308 pages
The demand for greater flexibility both in bandwidth allocation as well as in geographical terms has opened up the new application area of Wireless Local Loops (WLL). WLL provide a telephone system where subscribers are connected to the Public Switches Telephone Network (PSTN) using radio signals rather than copper wire for part or all of the connection between the subscriber and the switch.
Divided into two parts, theoretical aspects and applications, Wireless Local Loops brings together contributions from leading world experts in this increasingly important section of wireless communication systems.
- Covers all aspects of WLL from design to implementation.
- Explains the theoretical aspects of WLL including areas such as propagation, modulation, coding, channel modelling and also traffic engineering issues.
- Presents the applications areas of WLL including interference, prototype designs of various access protocols, a mobility manager, a remote management systems and the provision of multimedia services.
By providing a self-contained treatment of the progressively important area Wireless Local Loops will have immense appeal to practising engineers, researchers and graduate students needing to understand the bakground to WLL and its major role in the provision of new services.
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Propagation Models for Wireless Local Loops
Wireless Local Loop Networks Capacity Enhancement by Space Division
Combined Trellis Coded QuantizationModulation over a Wireless Local Loop
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32 kbps ADPCM air-interface amplitude antenna height bandwidth base station base station antenna bit rate broadband capacity carrier CDMA CDMA system cellular systems Channel Allocation configuration connection cordless cost coverage data rate DECT delay spread developed diffraction directional antennas Division Multiple Access downlink environment Equation frequency bands FS-ML function FWA network handset IEEE Trans implemented interface interference ISDN ITU-T LMDS load module maximum Mbps measurements microwave mobile MPCs multipath noise omni-directional operators parameters path loss performance power control propagation protocol PSTN quantization radio cell receiving antenna resource unit rooftop scenario sector sequence service classes simulation slots spectrum standard subscriber units switching TCQ/TCM TDMA techniques Telecommunications telephone terminals transmission transmit Trellis Coded uplink urban values voice W-CDMA wireless access Wireless Local Loop wireline WLL services WLL systems