Title :
Multi-code CDMA with variable sequence-sets
Author :
Schotten, Hans Dieter ; Elders-boll, Harald ; Busboom, Axel
Author_Institution :
Inst. for Commun. Eng., Tech. Hochschule Aachen, Germany
Abstract :
To increase the spectrum efficiency in mobile communications, multi-code code-division multiple-access (MC-CDMA) systems have been proposed. An adaptive MC-CDMA scheme is discussed which allows one to support variable source data-rates by variation of the set of code-sequences assigned to each user. Especially in multimedia scenarios with different data-rates and different requirements on the transmission performance, this technique seems to be superior to known techniques even when fading channels are considered
Keywords :
adaptive systems; binary sequences; channel capacity; code division multiple access; fading; land mobile radio; multimedia communication; radiofrequency interference; variable rate codes; BER; DS-CDMA; adaptive MC-CDMA; binary sequence; code-division multiple-access; code-sequences; fading channels; mobile communications; multi-code CDMA; multimedia; multiuser interference; transmission performance; variable sequence-sets; variable source data-rates; Additive white noise; Artificial intelligence; Bit error rate; Decoding; Interference; Matched filters; Multiaccess communication; Multicarrier code division multiple access; Signal processing; Transmitters;
Conference_Titel :
Universal Personal Communications Record, 1997. Conference Record., 1997 IEEE 6th International Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-3777-8
DOI :
10.1109/ICUPC.1997.627240
