Title :
Performance improvement of DS-CDMA systems in fading channels using turbo-codes
Author :
Elnoubi, Said M. ; Mokhtar, M. Amr ; El Masry, Waleed
Author_Institution :
Alexandria Univ., Egypt
Abstract :
Multiuser detection and turbo coding are two of the most powerful techniques for enhancing the performance of next-generation wideband code-division multiple-access (WCDMA) systems. WCDMA has been adopted by industry as a key technology for the next generation wireless communication systems. Due to the time variation and frequency selectivity of wireless multipath channels, intersymbol interference (ISI), and multiple access interference (MAI) constitute major impediments to reliable communication in CDMA systems, In order to mitigate the effects of fading, channel coding is often employed. In this paper, the performance and design of turbo-coded DS/CDMA is examined over Rayleigh fading channels.
Keywords :
Rayleigh channels; broadband networks; channel coding; code division multiple access; intersymbol interference; multipath channels; multiuser detection; radiocommunication; radiofrequency interference; spread spectrum communication; turbo codes; DS-CDMA system; ISI; MAI; Rayleigh fading channel; WCDMA; channel coding; frequency selectivity; intersymbol interference; multiple access interference; multiuser detection; turbo-code; wideband code-division multiple-access system; wireless communication system; wireless multipath channel; Communication industry; Fading; Frequency; Intersymbol interference; Multiaccess communication; Multiple access interference; Multiuser detection; Turbo codes; Wideband; Wireless communication;
Conference_Titel :
Radio Science Conference, 2004. NRSC 2004. Proceedings of the Twenty-First National
Print_ISBN :
977-5031-77-X
DOI :
10.1109/NRSC.2004.1321820
