Title :
A Recursive Quadratic Programming Approach to Multiuser Detection for MC-CDMA System with M-QAM
Author :
Wang, Xianmin ; Mao, Zhiwei
Author_Institution :
MtekVision Canada Ltd., Ottawa, Ont.
Abstract :
A recursive quadratic programming (RQP) approach is proposed for multiuser detection in multicarrier code-division multiple-access (MC-CDMA) systems. In this approach, the combinatorial problem associated with the optimal maximum likelihood (ML) detection is relaxed to a quadratic programming (QP) problem first and then a recursive approach is developed to improve the detection performance. Computer simulations are presented which demonstrate that the detector developed based on the proposed approach offers close-to-optimal symbol-error rate (SER) performance which outperforms several existing sub-optimal detectors
Keywords :
code division multiple access; combinatorial mathematics; error statistics; maximum likelihood estimation; multiuser detection; quadratic programming; MC-CDMA system; combinatorial problem; multicarrier code-division multiple-access system; multiuser detection; optimal maximum likelihood detection; recursive quadratic programming approach; symbol-error rate; AWGN; Computer simulation; Detectors; Fading; Frequency; Maximum likelihood detection; Multiaccess communication; Multicarrier code division multiple access; Multiuser detection; Quadratic programming; M-ary modulation; MC-CDMA; Quadratic programming; multi-user detection; recursive approach;
Conference_Titel :
Electrical and Computer Engineering, 2006. CCECE '06. Canadian Conference on
Conference_Location :
Ottawa, Ont.
Print_ISBN :
1-4244-0038-4
Electronic_ISBN :
1-4244-0038-4
DOI :
10.1109/CCECE.2006.277545
