Combined Transceiver Optimization for Uplink Multiuser MIMO with Limited CSI. (18th January 2011)

• Record Type: Journal Article
• Authors: Hu, Chia-Chang; Yang, Chung-Lun
• Other Names: Bhatia S. K. Academic Editor.; Nappi M. A. Academic Editor.
• Is Part Of: ISRN signal processing. Volume 2011(2011)
• Publication Date: 2011-01-18
• Subjects: Signal processing -- Periodicals; Signal processing; Periodicals; 621.3822
• DOI: 10.5402/2011/735695
• Languages: English
• ISSNs: 2090-5041

Abstract

Abstract : Joint precoder and decoder optimization is considered for uplink multiuser multiple-input multiple-output (MU-MIMO) systems with limited channel state information (CSI) at both the transmitters and receivers. Instead of counting on complex iterative-based algorithms, an efficient and noniterative QR-based linear transceiver pair design is employed. In addition, an equal power distribution (EPD) scheme is applied to adjust transmit power allocation of each mobile station (MS) between its symbols under the total transmit-power constraint. Simulations are conducted to provide a comparative evaluation of the proposed QR-EPD algorithm with other transceiver designs on the sum mean-squared error (SMSE) and the averaged bit-error-rate (BER) performance.