DocumentCode :
3193344
Title :
Blind Detection in Frequency Domain for MC-CDMA communication System Using Particle Swarm Optimization
Author :
Hung, Ho-Lung ; Lee, Shu-Hong ; Wen
Author_Institution :
Nat. Chung Cheng Univ., Chia-yi
fYear :
2007
fDate :
2-4 July 2007
Firstpage :
1
Lastpage :
7
Abstract :
In digital communications, the constant modulus algorithm (CMA) for blind channel equalization has some disadvantage such as slow convergence speed and phase rotation. Therefore, a modified constant modulus algorithm was developed for blind channel equalization. In this paper, we put forward a novel receiver, which combines CMA blind adaptive multiuser detection with particle swarm optimization (PSO) algorithm in frequency domain for multi-carrier direct sequence code division multiple access systems. To work around potentially computational intractability, the proposed scheme exploits heuristics in consideration of both global and local exploration CMA. The simulation results show that BER performance of the PSO-CMA blind detection is superior to that of steepest decreasing constant modulus algorithm (DSCMA), constant modulus algorithm (CMA) based detection and the complexity of the former is much lower than that of the latter.
Keywords :
code division multiple access; error statistics; particle swarm optimisation; telecommunication channels; BER performance; MC-CDMA communication system; blind adaptive multiuser detection; blind channel equalization; blind detection; computational intractability; constant modulus algorithm; digital communications; frequency domain algorithm; global exploration CMA; heuristics; local exploration CMA; multicarrier direct sequence code division multiple access systems; particle swarm optimization; receiver; Bit error rate; Blind equalizers; Computational modeling; Convergence; Digital communication; Direct-sequence code-division multiple access; Frequency domain analysis; Multicarrier code division multiple access; Multiuser detection; Particle swarm optimization;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless and Optical Communications Networks, 2007. WOCN '07. IFIP International Conference on
Conference_Location :
Singapore
Print_ISBN :
1-4244-1005-3
Electronic_ISBN :
1-4244-1005-3
Type :
conf
DOI :
10.1109/WOCN.2007.4284200
Filename :
4284200
Link To Document :
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