Properties of a TDMA pico cellular office communication system

摘要: The properties of a TDMA/TDD (time-division multiple-access/time-division duplex) pico cellular cordless telephone system using decentralized dynamic channel allocation and handover are presented. has 16 time-division time-duplex channels (slots) per carrier, each occupying 2 MHz. TDMA frame is 16-ms long, slot bits for synchronization, signaling data. data speed suited 32-kb/s speech codecs. Procedures have been developed efficient quick handover, the fact that one single radio can simultaneously monitor or communicate on all channels. Simulations specific six-storeyed building indicate provide wireless communication up to 30% telephones, 32 100% telephones. Tests show no time dispersion equalizers needed, antenna diversity effective against fading dips dispersion. >