CHANNEL SEGREGATION - A SELF-ORGANIZED DYNAMIC CHANNEL ALLOCATION METHOD - APPLICATION TO TDMA FDMA MICROCELLULAR SYSTEM

Channel segregation was previously proposed as a self-organized dynami c channel assignment. Its performance has been examined by applying it to FDMA systems. This paper discusses its application to the TDMA/FDM A or mulitcarrier TDMA system. Spectrum efficiency of the TDMA/FDMA ce llular system deteriorates due to the problem of unaccessible channel: a call can be blocked in a cell even when there are idle channels bec ause of the restriction on simultaneous use of different carrier frequ encies in the cell. This paper shows that channel segregation can reso lve this problem with a small modification of its algorithm. The perfo rmance of the TDMA/FDMA system with channel segregation on the call bl ocking probability versus traffic density is analyzed with computer si mulation experiments. The effect of losing the TDMA frame synchronizat ion between cells on the performance is also discussed.