Title :
Multidimensional TCM DS/SSMA in Rayleigh fading channel
Author :
Yang, Fengfang ; Bi, Guangguo
Author_Institution :
Dept. of Radio Eng., Southeast Univ., Nanjing, China
fDate :
29 Sep-2 Oct 1996
Abstract :
The direct sequence spread spectrum multiple access (DS/SSMA) scheme has attracted much interest for commercial applications such as digital cellular radio and personal communications because of the possibility of achieving larger capacity than FDMA or TDMA. Multidimensional trellis-coded modulation (multi-D TCM) is applied to a DS/SSMA system in a Rayleigh fading channel. New models of multi-spread spectrum and multi-correlation reception at the transmitter and receiver are proposed. Based on these models we study the performance of multi-D TCM DS/SSMA systems in a Rayleigh fading channel. The simulation results show that the performance of DS/SSMA system is greatly improved by using multi-D TCM compared with DS/SSMA systems with traditional TCM of Ungerboeck´s (1982) type
Keywords :
Rayleigh channels; cellular radio; correlation methods; digital radio; fading; multi-access systems; personal communication networks; pseudonoise codes; radio receivers; radio transmitters; spread spectrum communication; trellis coded modulation; Rayleigh fading channel; digital cellular radio; direct sequence spread spectrum multiple access; multicorrelation reception; multidimensional TCM DS/SSMA; multispread spectrum reception; personal communications; receiver; simulation results; system performance; transmitter; Bandwidth; Decoding; Fading; Land mobile radio cellular systems; Modulation coding; Multidimensional systems; Radio transmitters; Receivers; Spread spectrum communication; Viterbi algorithm;
Conference_Titel :
Universal Personal Communications, 1996. Record., 1996 5th IEEE International Conference on
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-3300-4
DOI :
10.1109/ICUPC.1996.562628
