Title :
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
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;
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
DOI :
10.1109/ISWPC.2009.4800599
