Title :
Synchronous trellis-coded CDMA: Analysis and system performance
Author :
De Gaudenzi, Riccardo ; Giannetti, Filippo
Author_Institution :
European Space Agency, Noordwijk, Netherlands
Abstract :
Synchronous trellis-coded code division multiple access (S-TC-CDMA) is introduced and analyzed. Compared with uncoded synchronous CDMA and conventional CDMA systems, S-TC-CDMA greatly improves the power and/or bandwidth efficiency using trellis coded M-ary phase shift keying (PSK) or quadrature amplitude modulation (QAM) modulation in conjunction with independent quasi-orthogonal I-Q direct sequence spectrum spreading (DS/SS). Approximate system bit error rate performances derived for an additive white Gaussian noise (AWGN) channel with cochannel interference are favorably compared to computer simulation results. Impairments due to satellite nonlinearities and multipath channel fading are discussed, and system peformance is reported
Keywords :
Gaussian noise; cochannel interference; code division multiple access; error statistics; fading; multipath channels; phase shift keying; pseudonoise codes; quadrature amplitude modulation; satellite communication; spread spectrum communication; trellis codes; white noise; AWGN; M-ary phase shift keying; PSK; QAM; additive white Gaussian noise; bandwidth efficiency; cochannel interference; code division multiple access; multipath channel fading; quadrature amplitude modulation; satellite nonlinearities; sequence spectrum spreading; synchronous trellis coded CDMA; system bit error rate; AWGN; Amplitude modulation; Bandwidth; Code division multiplexing; Multiaccess communication; Performance analysis; Phase modulation; Phase shift keying; Quadrature amplitude modulation; System performance;
Conference_Titel :
Communications, 1993. ICC '93 Geneva. Technical Program, Conference Record, IEEE International Conference on
Conference_Location :
Geneva
Print_ISBN :
0-7803-0950-2
DOI :
10.1109/ICC.1993.397526
