Title :
Fast converging blind adaptive multiuser detectors with linearly constrained CMA for DS/CDMA systems
Author :
Sun, Liping ; Bi, Guoan ; Zhang, Liren
Author_Institution :
Nanyang Technol. Univ., Singapore
fDate :
30 Aug.-2 Sept. 2004
Abstract :
The paper presents a fast converging blind adaptive multiuser detector with modified linearly constrained CMA for DS/CDMA systems. By selecting a suitable linearly constrained cost function, the performance of the proposed algorithm is improved in terms of the capability of suppressing multiple access interference and dynamic tracing. Simulation results show that the proposed algorithm provides a faster convergence to reach a steady-state than similar algorithms in dynamic environments.
Keywords :
adaptive signal detection; code division multiple access; convergence of numerical methods; interference suppression; multiuser detection; radiofrequency interference; spread spectrum communication; DS-CDMA; DS/CDMA systems; MAI suppression; blind adaptive multiuser detectors; cost function; dynamic tracing; fast convergence; linearly constrained CMA; multiple access interference suppression; Blind equalizers; Convergence; Detectors; Filtering; Interference constraints; Intersymbol interference; Maximum likelihood detection; Multiaccess communication; Multiple access interference; Multiuser detection;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2004 IEEE Eighth International Symposium on
Print_ISBN :
0-7803-8408-3
DOI :
10.1109/ISSSTA.2004.1371683
