Title :
Multi-rate multi-tone-CDMA with multiuser detection for wireless multimedia communications
Author :
Fu, Po-Wei ; Chen, Kwang-Cheng
Author_Institution :
Graduate Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
The multi-tone CDMA is a spectrum-efficient multiuser transmission technique, and regarded as a promising platform for multimedia communications. We study the multi-rate physical-layer transmissions, based on multi-code (MC) and variable-spreading-length (VSL) access. A general and systematic system model accommodating both access methods with multiuser detection (MUD) is constructed, which is useful for programmable system integration. We investigate the system characteristics under multi-rate transmission, including multiple access interference (MAI) and intercarrier interference (ICI), and the performance comparisons between MC and VSL schemes in frequency-selective Rayleigh fading channels are studied.
Keywords :
Rayleigh channels; adjacent channel interference; code division multiple access; interference suppression; mobile radio; multimedia communication; multiuser detection; spread spectrum communication; variable length codes; ICI; MAI; MC access; MUD; VSL access; frequency-selective Rayleigh fading channels; intercarrier interference; multi-code access; multi-rate CDMA; multi-tone CDMA; multiple access interference; multiuser detection; performance comparisons; physical-layer transmissions; programmable system integration; spectrum-efficient multiuser transmission; variable-spreading-length access; wireless multimedia communications; Bandwidth; Educational institutions; Interference cancellation; Multiaccess communication; Multimedia communication; Multimedia systems; Multiple access interference; Multiuser detection; OFDM; Wireless communication;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2002. The 13th IEEE International Symposium on
Print_ISBN :
0-7803-7589-0
DOI :
10.1109/PIMRC.2002.1046497
