Title :
A new constrained minimum-BER multiuser detection algorithm
Author :
Chen, Fangjiong ; Xiong, Shangkun ; Wei, Gang
Author_Institution :
Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China
fDate :
31 May-2 June 2004
Abstract :
Based on the previously proposed error probability function of multiuser detector, a new set of constraints is proposed. We show that under these new constraints uniqueness of global minimum can be guaranteed. An efficient barrier conjugate gradient algorithm is developed to solve this constrained optimization problem. Computer simulation results show that the performance of the proposed detector approaches to that of the optimal minimum bit-error rate linear detector and is significantly better than that of the MMSE detector.
Keywords :
conjugate gradient methods; error statistics; multiuser detection; optimisation; telecommunication signalling; barrier conjugate gradient algorithm; bit-error rate linear detector; communication system signaling; constrained minimum-BER multiuser detection algorithm; error probability function; multiuser detector; optimization problem; signal processing; Bit error rate; Computer simulation; Constraint optimization; Cost function; Decorrelation; Density functional theory; Detectors; Gaussian noise; Kernel; Multiuser detection;
Conference_Titel :
Emerging Technologies: Frontiers of Mobile and Wireless Communication, 2004. Proceedings of the IEEE 6th Circuits and Systems Symposium on
Print_ISBN :
0-7803-7938-1
DOI :
10.1109/CASSET.2004.1321897
