Performance of Adaptive MIMO System Based on Beam-Nulling

Author

Gheryani, Mabruk ; Wu, Zhiyuan ; Shayan, Yousef R.

Author_Institution

Dept. of Electr. Eng., Concordia Univ., Montreal, QC

fYear

2009

fDate

11-13 Feb. 2009

Firstpage

1

Lastpage

4

Abstract

In this paper, "beam-nulling" is proposed to send signals over a generated subspace orthogonal to the weakest spatial subchannel fed back from the receiver. Signal-to-interference-plus-noise ratio (SINR) of MMSE receiver is derived for beam-nulling. Then the associated average bit-error rate (BER) of beam-nulling is given numerically and verified by simulation results. Simulation results are provided to compare beam-nulling with beamforming at the same data rate. To improve performance further, beam-nulling is concatenated with linear dispersion code. Simulation results are also provided to compare the concatenated scheme with beamforming.

Keywords

MIMO communication; error statistics; radio receivers; MMSE receiver; adaptive MIMO system; beam-nulling; bit error rate; linear dispersion code; signal-to-interference-plus-noise; Adaptive systems; Array signal processing; Bit error rate; Concatenated codes; Feedback; MIMO; Receiving antennas; Signal to noise ratio; Transmitters; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Pervasive Computing, 2009. ISWPC 2009. 4th International Symposium on

Conference_Location

Melbourne, VIC

Print_ISBN

978-1-4244-2965-3

Electronic_ISBN

978-1-4244-2966-0

Type

conf

DOI

10.1109/ISWPC.2009.4800599

Filename

4800599