Title :
Novel DS-CDMA Multiuser Detector Based on Step Ant Colony Optimization
Author :
Zhu, Liang ; Zhu, Qiuping ; Xu, Xinyi ; Deng, Rong
Author_Institution :
Sch. of Electron. Inf., Wuhan Univ., Wuhan
Abstract :
In this paper, we present a new multiuser detection algorithm based on step ant colony optimization. This algorithm accelerates the process of search by setting the parameters of basic ant colony optimization appropriately and meanwhile introduces a strategy of jumping out of the local optimal solution, thus it can approach the minimum probability of error with great computation efficiency. Simulation results show that the proposed algorithm converges rapidly and provides good BER performance for cases where basic ant colony algorithms perform poorly.
Keywords :
code division multiple access; error statistics; multiuser detection; optimisation; BER; DS-CDMA multiuser detector; code division multiple access systems; computation efficiency; step ant colony optimization; AWGN; Ant colony optimization; Bit error rate; Computational modeling; Detectors; Matched filters; Maximum likelihood detection; Multiaccess communication; Multiple access interference; Multiuser detection;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1311-9
DOI :
10.1109/WICOM.2007.242
