Title :
Channel segregation-a self-organized dynamic channel allocation method: application to TDMA/FDMA microcellular system
Author :
Akaiwa, Yoshihiko ; Andoh, Hidehiro
Author_Institution :
Kyushu Inst. of Technol., Fukuoka, Japan
fDate :
8/1/1993 12:00:00 AM
Abstract :
Channel segregation was previously proposed as a self-organized dynamic channel assignment. Its performance was examined by applying it to frequency-division multiple access systems. Its applications to the TDMA/FDMA (time-division multiple access/frequency-division multiple access) or multicarrier TDMA system is discussed. The spectrum efficiency of the TDMA/FDMA cellular system deteriorates due to the problem of unaccessible channel: a call can be blocked in a cell even when there are idle channels because of the restriction on simultaneous use of different carrier frequencies in the cell. It is shown that channel segregation can resolve this problem with a small modification of its algorithm. The performance of the TDMA/FDMA system with channel segregation on the call blocking probability versus traffic density is analyzed with computer simulation experiments. The effect of losing the TDMA frame synchronization between cells on the performance is also discussed
Keywords :
cellular radio; frequency division multiple access; telecommunication channels; time division multiple access; FDMA; call blocking probability; carrier frequencies; channel segregation; computer simulation experiments; frame synchronization; frequency-division multiple access; microcellular system; multicarrier TDMA system; self-organized dynamic channel allocation; spectrum efficiency; traffic density; Channel allocation; Communication system control; Control systems; Frequency division multiaccess; Microcell networks; Microwave integrated circuits; Mobile communication; Radio control; Radio transceivers; Time division multiple access;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
