DocumentCode :
3429623
Title :
Modelling and compensation of frequency-dependent I/Q imbalance in multiple beamforming OFDM transceivers
Author :
Ozdemir, Ozgur ; Hamila, Ridha ; Al-Dhahir, Naofal
Author_Institution :
Dept. of Electr. Eng., Qatar Univ., Doha, Qatar
fYear :
2012
fDate :
2-5 July 2012
Firstpage :
1359
Lastpage :
1364
Abstract :
In this paper, we investigate the effects of asymmetric frequency-dependent joint transmit-receive I/Q imbalance on the performance of multiple beamforming MIMO OFDM systems. We derive the throughput-maximizing TX/RX beamforming coefficients taking into account I/Q imbalance effects. In addition, we propose a low-complexity pilot-aided scheme for the estimation of the channel and I/Q imbalance parameters. Our simulation results demonstrate that the proposed generalized multiple beamforming scheme is effective in mitigating I/Q imbalance effects and by using multiple beamforming data rate can be increased at the expense of increased error rate.
Keywords :
MIMO communication; OFDM modulation; array signal processing; channel estimation; radio transceivers; I-Q imbalance effect mitigation; asymmetric frequency-dependent joint transmit-receive I-Q imbalance compensation; channel estimation; generalized multiple beamforming scheme; low-complexity pilot-aided scheme; multiple beamforming MIMO OFDM systems; multiple beamforming OFDM transceivers; multiple beamforming data rate; throughput-maximizing TX-RX beamforming coefficients; Array signal processing; Channel estimation; Joints; Noise; OFDM; Receivers; Vectors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Science, Signal Processing and their Applications (ISSPA), 2012 11th International Conference on
Conference_Location :
Montreal, QC
Print_ISBN :
978-1-4673-0381-1
Electronic_ISBN :
978-1-4673-0380-4
Type :
conf
DOI :
10.1109/ISSPA.2012.6310505
Filename :
6310505
Link To Document :
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