18 pages matching omnidirectional antenna in this book
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World System Standards
Basic Elements Dynamic Channel Allocation Noise
40 other sections not shown
50 percent adjacent-channel interference amplifier AMPS band AMPS system band bandwidth base station base-station battery billing system building cable capacity carrier CDMA cell site cellular operator cellular radio cellular switch cellular systems circuits control channels cost coverage dB|iV/m designed digital systems downtilt effective environment equipment Erlang example factor field strength frequency reuse gain grade of service handheld handoff height increase installation interference limited measured meters microwave mobile switch modulation mounted multipath NAMPS noise occur omnidirectional antenna output path loss pattern problem propagation PSTN range receiver reduce roamer roaming route satellite sector antennas shown in Figure signal SINAD spectrum spread spectrum subscribers Supercell survey Table TACS TDMA techniques tower traffic transmit trunk typical units users usually voice channel voltage watts