Title :
Subspace based blind multiuser detection asynchronous MC-CDMA systems
Author_Institution :
Coll. of Inf. & Electron. Eng., Zhejiang GongShang Univ., Hangzhou, China
Abstract :
Firstly, this paper extends the subspace based intersymbol decorrelating (IS-DEC) detector for code division multiple access (CDMA) system to multicarrier CDMA (MC-CDMA) system. Secondly, a modified projection approximation subspace tracking deflation (M-PASTd) algorithm is proposed and developed elaborately. Then, the M-PASTd algorithm is applied to the blind adaptive implementation of IS-DEC detector for uplink of MC-CDMA systems. Simulation results show that the IS-DEC detector implemented by M-PASTd has good similarity with the optimal decorrelating detector, and provides better bit error rate (BER) performance.
Keywords :
code division multiple access; error statistics; multiuser detection; BER; asynchronous MC-CDMA systems; bit error rate; blind adaptive implementation; code division multiple access system; modified projection approximation subspace tracking deflation; subspace based blind multiuser detection; subspace based intersymbol decorrelating detector; uplink; Approximation algorithms; Bit error rate; Decorrelation; Delay effects; Detectors; Frequency; Multiaccess communication; Multicarrier code division multiple access; Multiple access interference; Multiuser detection;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2005. Proceedings. 2005 International Conference on
Print_ISBN :
0-7803-9335-X
DOI :
10.1109/WCNM.2005.1544125
