Analysis and compensation for the joint effects of HPA nonlinearity, I/Q imbalance and crosstalk in MIMO beamforming systems

Author

Qi, Jian ; Aissa, Sonia

Author_Institution

INRS-EMT, Univ. of Quebec, Montreal, QC, Canada

fYear

2011

fDate

28-31 March 2011

Firstpage

1562

Lastpage

1567

Abstract

In this paper, we investigate the joint effects of high-power amplifier (HPA) nonlinearity, in-phase/quadrature-phase (I/Q) imbalance and crosstalk, on the performance of multiple-input multiple-output (MIMO) transmit beamforming (TB) systems, and propose a compensation method for the three impairments together. The performance of the MIMO TB system equipped with the proposed compensation scheme is evaluated in terms of average symbol error probability and capacity when transmissions are performed over uncorrelated Rayleigh fading channels. Numerical results are provided and show the effects on performance of several system parameters, namely, the HPA parameters, image-leakage ratio, crosstalk, numbers of antennas, length of pilot symbols and phase-shift keying modulation order.

Keywords

MIMO communication; Rayleigh channels; array signal processing; compensation; crosstalk; error statistics; phase shift keying; I/Q imbalance; MIMO beamforming systems; average symbol error probability; compensation scheme; crosstalk; high-power amplifier nonlinearity; image-leakage ratio; in-phase/quadrature-phase imbalance; multiple-input multiple-output transmit beamforming; phase-shift keying modulation order; uncorrelated Rayleigh fading channels; Array signal processing; Channel estimation; Crosstalk; Estimation; MIMO; Radio frequency; Receivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference (WCNC), 2011 IEEE

Conference_Location

Cancun, Quintana Roo

ISSN

1525-3511

Print_ISBN

978-1-61284-255-4

Type

conf

DOI

10.1109/WCNC.2011.5779363

Filename

5779363