资料介绍
Adaptive AntnnnaAdaptive Antenna Tutorial:
Spectral Efficiency and Spatial Processing
FCC Office of Engineering and Technology 7 September 2001
Marc Goldburg CTO, Internet Products Group ArrayComm, Inc. http://www.arraycomm.com marcg@arraycomm.com
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Cellular Technology
base station cell
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Cellular networks divide a coverage area into multiple “cells”
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each has its own radio infrastructure and users
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Basis for most two-way wireless services
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sector
cellular phones (1G, 2G, 3G, …) MMDS broadband data (Sprint, Worldcom) Wireless LANs LMDS broadband data (Teligent, Winstar, …)
Telephony Networks Backhaul Network Switching/ Switching/ Routing Routing
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Data Networks
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Motivation For This Talk
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Cellular system design trades off competing requirements
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service definition serv
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