Title :
Service-variable multidimensional DS/CDMA systems
Author :
Guo, Nan ; Milstein, Laurence B.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA
Abstract :
A general DS/CDMA system for support of wireless multimedia services is proposed, which can unify several different existing multi-code systems. We use a code, which we refer to as a “mapping code”, to help form a multidimensional signal constellation. Performance analysis is presented for the system with a particular class of mapping codes known as bipolar constant weight codes, based on the assumption of Gaussian multiple access interference. Numerical results are given to show the effects of system configuration, data rate, threshold level, etc
Keywords :
AWGN channels; Gaussian processes; code division multiple access; codes; multimedia communication; radiofrequency interference; spread spectrum communication; AWGN channel; Gaussian multiple access interference; bipolar constant weight codes; data rate; mapping codes; multi-code systems; multidimensional signal constellation; numerical results; performance analysis; service-variable multidimensional DS/CDMA systems; system configuration; threshold level; wireless multimedia services; Constellation diagram; Electronic mail; Error analysis; Interference; Matched filters; Multiaccess communication; Multidimensional systems; Multimedia systems; Performance analysis; Quadrature amplitude modulation;
Conference_Titel :
Military Communications Conference, 1998. MILCOM 98. Proceedings., IEEE
Print_ISBN :
0-7803-4506-1
DOI :
10.1109/MILCOM.1998.722185
