Title :
(1+/spl lambda/) evolution strategy method for asynchronous DS-CDMA multiuser detection
Author :
Wang, Shaowei ; Zhu, Qiuping ; Kang, Lishan
Author_Institution :
Sch. of Electron. Inf., Wuhan Univ.
fDate :
6/1/2006 12:00:00 AM
Abstract :
This letter introduces a new multiuser detection algorithm based on (1+lambda) evolution strategy for asynchronous DS-CDMA systems. By setting the offspring population size and the mutation probability appropriately, the new algorithm can approach the minimum probability of error with great computation efficiency. Simulation results show that the proposed algorithm converges very rapidly and provides good BER performance for cases where other suboptimum algorithms perform poorly. The average computation time is polynomial complexity in the number of users
Keywords :
code division multiple access; error statistics; multiuser detection; spread spectrum communication; (1+lambda) evolution strategy; BER performance; asynchronous DS-CDMA system; bit error rate; direct-sequence code division multiple access; error probability; multiuser detection algorithm; polynomial complexity; AWGN; Binary phase shift keying; Bit error rate; Computational modeling; Detectors; Evolutionary computation; Genetic mutations; Multiaccess communication; Multiple access interference; Multiuser detection;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2006.1638603
