Minimum bit-error rate design for space-time equalization-based multiuser detection

Chen, Sheng, Livingstone, A. and Hanzo, L. (2006) Minimum bit-error rate design for space-time equalization-based multiuser detection. IEEE Transactions on Communications, 54 (5), 824-832. (doi:10.1109/TCOMM.2006.873999).

Record type: Article

Abstract

A novel minimum bit-error rate (MBER) space–time equalization (STE)-based multiuser detector (MUD) is proposed for multiple-receive-antenna-assisted space-division multiple-access systems. It is shown that the MBER-STE-aided MUD significantly outperforms the standard minimum mean-square error design in terms of the achievable bit-error rate (BER). Adaptive implementations of the MBER STE are considered, and both the block-data-based and sample-by-sample adaptive MBER algorithms are proposed. The latter, referred to as the least BER (LBER) algorithm, is compared with the most popular adaptive algorithm, known as the least mean square (LMS) algorithm. It is shown that in case of binary phase-shift keying, the computational complexity of the LBER-STE is about half of that required by the classic LMS-STE. Simulation results demonstrate that the LBER algorithm performs consistently better than the classic LMS algorithm, both in terms of its convergence speed and steady-state BER performance. Index Terms—Adaptive algorithm, minimum bit-error rate (MBER), multiuser detection (MUD), space–time processing.

Text

01632096.pdf - Other

Download (690kB)

Text

01632096 - Version of Record

Restricted to Repository staff only

Request a copy