Error probability for MIMO zero-forcing receiver with adaptive power allocation in the presence of imperfect channel state information

Author

Au, Edward K S ; Wang, Cheng ; Sfar, Sana ; Murch, Ross D. ; Mow, Wai Ho ; Lau, Vincent K N ; Cheng, Roger S. ; Letaief, Khaled

Author_Institution

Dept. of Electron. & Comput. Eng., Hong Kong Univ. of Sci. & Technol.

Volume

6

Issue

4

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

1523

Lastpage

1529

Abstract

Link adaptation allows the transmitter to adapt to changing channel conditions. Critical to the design of link adaptation is the accuracy of channel state information at the transmitter. In this paper, we investigate the effect of imperfect channel state information and feedback delay on the performance of a multiple-input multiple-output zero-forcing receiver with adaptive power allocation. A closed-form approximate upper bound on bit error rate is derived for M-ary phase shift keying and M-ary quadrature amplitude modulation and it is valid for arbitrary numbers of transmit and receive antennas. Comparison with Monte Carlo simulations is also provided, showing that the results derived from this analytical bound are useful for system design

Keywords

MIMO communication; error statistics; matrix algebra; phase shift keying; quadrature amplitude modulation; radio links; radio receivers; wireless channels; M-ary phase shift keying; M-ary quadrature amplitude modulation; MIMO zero-forcing receiver; Monte Carlo simulations; adaptive power allocation; bit error rate; channel state information; closed-form approximate upper bound; error probability; feedback delay; link adaptation; multiple-input multiple-output; receive antennas; transmit antennas; transmitter; Bit error rate; Channel state information; Delay effects; Error probability; MIMO; Phase shift keying; Quadrature amplitude modulation; State feedback; Transmitters; Upper bound;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2007.348348

Filename

4155691