Impact of I/Q imbalance on the performance of two-way CSI-assisted AF relaying

Qi, J., Aissa, S. and Alouini, M.-S. (2013) Impact of I/Q imbalance on the performance of two-way CSI-assisted AF relaying. In: 2013 IEEE Wireless Communications and Networking Conference (WCNC). IEEE, pp. 2507-2512. ISBN 9781467359382 doi: 10.1109/WCNC.2013.6554955

Abstract/Summary

In this paper, we investigate half-duplex two-way dual-hop channel state information (CSI)-assisted amplify-and-forward (AF) relaying in the presence of in-phase and quadrature-phase (I/Q) imbalance. A compensation approach for the I/Q imbalance is proposed, which employs the received signals together with their conjugations to detect the desired signal. We also derive the average symbol error probability of the considered half-duplex two-way dual-hop CSI-assisted AF relaying networks with and without compensation for I/Q imbalance in Rayleigh fading channels. Numerical results are provided and show that the proposed compensation method mitigates the impact of I/Q imbalance to a certain extent.