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Digital I/Q imbalance correction for full-duplex dual-band OFDM radio transceivers

Published online by Cambridge University Press:  06 July 2015

Zhaowu Zhan ,
Guillaume Villemaud ,
Florin Hutu  and
Jean-Marie Gorce
Zhaowu Zhan*
Affiliation:
Université de Lyon, INRIA, INSA-Lyon, CITI-INRIA, F-69621, Villeurbanne, France. Phone: +33 650 24 23 54
Guillaume Villemaud
Affiliation:
Université de Lyon, INRIA, INSA-Lyon, CITI-INRIA, F-69621, Villeurbanne, France. Phone: +33 650 24 23 54
Florin Hutu
Affiliation:
Université de Lyon, INRIA, INSA-Lyon, CITI-INRIA, F-69621, Villeurbanne, France. Phone: +33 650 24 23 54
Jean-Marie Gorce
Affiliation:
Université de Lyon, INRIA, INSA-Lyon, CITI-INRIA, F-69621, Villeurbanne, France. Phone: +33 650 24 23 54
*
Corresponding author: Z. Zhan Email: [email protected]
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Abstract

This paper presents a full-duplex dual-band orthogonal frequency division duplexing (OFDM) radio architecture that enables the radio transceiver to be more flexible and provides a viable radio link capacity gain. A simple but practical I/Q imbalance estimation and compensation method, based on the frequency-flat-fading behavior of the self-interference channel, is proposed. The performance of the proposed I/Q imbalance compensation method is evaluated by link level simulation conducted with Advanced Design System and Matlab. The co-simulation results show that the proposed radio transceiver could potentially increase the physical layer transmission rate by four times compared with the conventional radio link at the cost of tolerable loss of bit error rate performance. The I/Q imbalance compensation method can effectively compensate both high and low I/Q imbalance without the problem of algorithm convergence.

Keywords

Wireless systems and signal processingfull-duplexdual-bandOFDMI/Q imbalanceLow noise and communication receivers
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 8 , Issue 3: Journee Nationale des Micro-ondes (JNM) 2015 , May 2016 , pp. 505 - 519
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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References

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