Title :
Spectrum efficiency of multi-carrier switching TDMA microcellular communication systems
Author :
Tanaka, Kiyoshi ; Horikawa, Izumi ; Terunuma, Kazuaki
Author_Institution :
NTT Mobile Commun. Div., Kanagawa, Japan
Abstract :
The spectrum efficiency of microcellular digital systems under high-density traffic and indoor propagation environments is described. The number of necessary channels is evaluated for given traffic densities and several indoor propagation models related to room size. It is shown that more than one hundred channels are required for one system under heavy traffic density conditions, for example 20000 erl/km2 . Multicarrier switching time-division multiple access (TDMA) radio access, which shares carriers and timing as slots, is effective in interference limited conditions. The improved channel efficiency of carrier-switching TDMA, about double that of conventional TDMA, is confirmed by computer simulation
Keywords :
cellular radio; digital radio systems; radiowave propagation; time division multiple access; carrier-switching TDMA; channel efficiency; high-density traffic; indoor propagation environments; interference limited conditions; microcellular communication; multi-carrier switching TDMA; radio access; room size; spectrum efficiency; time-division multiple access; Communication switching; Communication system traffic; Computer simulation; Interference; Propagation losses; Radio spectrum management; Telecommunication switching; Telecommunication traffic; Time division multiple access; Traffic control;
Conference_Titel :
Global Telecommunications Conference, 1990, and Exhibition. 'Communications: Connecting the Future', GLOBECOM '90., IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-87942-632-2
DOI :
10.1109/GLOCOM.1990.116656
