Interference alignment performanceon MIMO X channels with imperfect channel knowledge

Author

Mahmoud, AbdulRahman ; El-Khamy, Mostafa ; Elsayed, Khaled

Author_Institution

Electr. Eng. Dept., Alexandria Univ., Alexandria, Egypt

fYear

2012

fDate

17-20 June 2012

Firstpage

239

Lastpage

243

Abstract

Interference alignment (IA) can achieve the optimal degrees of freedom in interference-limited wireless systems. Popular IA schemes assume perfect global knowledge of the MIMO channels at all transmitters and receivers. In this paper, we investigate the error rate performance of interference alignment in MIMO M × 2 X systems at practical signal to noise ratios. Through theoretical analysis and Monte Carlo simulations, we analyze the effect of imperfect channel estimation at the receiver and transmitter on the bit error rate performance of zero-forcing interference alignment.

Keywords

MIMO communication; Monte Carlo methods; channel estimation; error statistics; radio receivers; radio transmitters; radiofrequency interference; wireless channels; IA schemes; MIMO X channels; Monte Carlo simulations; bit error rate performance; imperfect channel estimation; imperfect channel knowledge; interference alignment performance; interference-limited wireless systems; radio receiver; radio transmitter; zero-forcing interference alignment; Bit error rate; Interference; MIMO; Modulation; Receivers; Signal to noise ratio; Transmitters; MIMO; X-channel; channel estimation error; degrees of freedom; interference alignment; sum rate; zero-forcing;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Advances in Wireless Communications (SPAWC), 2012 IEEE 13th International Workshop on

Conference_Location

Cesme

ISSN

1948-3244

Print_ISBN

978-1-4673-0970-7

Type

conf

DOI

10.1109/SPAWC.2012.6292901

Filename

6292901