Title :
Fuzzy recursive symbol-by-symbol detector for single user CDMA receivers
Author :
Bas, Joan ; Neira, Ana Pérez ; Lagunas, Miguel A.
Author_Institution :
Univ. Politecnica de Catalunya, Spain
Abstract :
The Bayesian or maximum a posteriori (MAP) symbol-by-symbol detector allows minimum BER single user detection in CDMA systems with less memory requirements than the multiuser maximum likelihood sequence estimator. This work proposes a further complexity reduction by developing a fuzzy recursive implementation of the Bayesian detector. Simulation studies demonstrate the almost optimal performance of the developed fuzzy detector. The resulting system offers a performance v.s. complexity trade-off very appealing for detection in a 3rd generation mobile handset
Keywords :
Bayes methods; cellular radio; code division multiple access; computational complexity; error statistics; fuzzy systems; multiuser channels; radio receivers; recursive estimation; signal detection; spread spectrum communication; telephone sets; 3G mobile handset; Bayesian detector; MAP detector; cellular radio; complexity reduction; fuzzy recursive symbol-by-symbol detector; maximum a posteriori detector; maximum likelihood sequence estimator; memory requirements; multiuser UMTS channels; optimal performance; short spreading code; single user CDMA receivers; third generation mobile handset; Bayesian methods; Bit error rate; Code division multiplexing; Demodulation; Detectors; Maximum likelihood detection; Maximum likelihood estimation; Mobile handsets; Multiaccess communication; Synchronous generators;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on
Conference_Location :
Salt Lake City, UT
Print_ISBN :
0-7803-7041-4
DOI :
10.1109/ICASSP.2001.941165
