Title :
Optimal diagonal precoder for multi-antenna communication system
Author :
Yan, Zhiyong ; Wong, Kon Max ; Luo, Zhi-Quan
Author_Institution :
Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, Ont., Canada
Abstract :
We develop an efficient diagonal matrix precoder which minimizes the lower bound of the average bit error rate (BER) for a multi-antenna wireless communication system with a QR receiver in flat fading channel. The precoder also minimizes the average block error rate at the same time. It provides substantially lower error rates than the MMSE precoder and G.J. Foschini´s BLAST scheme (see Bell Labs Tech. J., p.41-59, 1996). The corresponding signal-to-noise ratio (SNR) gains can be several decibels.
Keywords :
encoding; error statistics; fading channels; matrix algebra; minimisation; phase shift keying; radio receivers; BER; BLAST scheme; BPSK signal; MMSE precoder; QR receiver; SNR; bit error rate; block error rate; diagonal matrix precoder; diagonal precoder; flat fading channel; lower bound minimization; multi-antenna communication system; signal-to-noise ratio; Bit error rate; Delay; Error analysis; Fading; Maximum likelihood detection; Receiving antennas; Signal to noise ratio; Transmitters; Transmitting antennas; Wireless communication;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2003. SPAWC 2003. 4th IEEE Workshop on
Print_ISBN :
0-7803-7858-X
DOI :
10.1109/SPAWC.2003.1318913
