Title :
Local minimum-BER linear multiuser detector
Author :
Li, Jiangyuan ; Chen, Fangjiong ; Wei, Gang
Author_Institution :
Sch. of Electron. & Inf., South China Univ. of Technol., Guangzhou, China
Abstract :
The bit-error rate (BER) cost function of linear multiuser detectors is considered. It is shown that the minimum-BER (MBER) linear multiuser detection can be converted into a constrained optimization problem. Then the local MBER (LMBER) linear multiuser detector is proposed. And an iteration algorithm for the LMBER detector is developed. It is shown that the iteration algorithm converges to the LMBER detector. Simulation results show that the LMBER detector achieves lower BER than the MMSE detector.
Keywords :
error statistics; iterative methods; multiuser detection; bit-error rate; constrained optimization problem; convergence; iteration algorithm; linear multiuser detection; local minimum-BER linear multiuser detector; AWGN; Bit error rate; Computational modeling; Computer simulation; Constraint optimization; Cost function; Decorrelation; Detectors; Multiuser detection; Vectors;
Conference_Titel :
Communications and Information Technology, 2005. ISCIT 2005. IEEE International Symposium on
Print_ISBN :
0-7803-9538-7
DOI :
10.1109/ISCIT.2005.1566905
