SINR analysis for beamforming OFDM systems under joint transmit-receive I/Q imbalance

Abstract

In this paper, we derive an analytical expression for the subcarrier average SINR of a beamforming OFDM system in the presence of joint transmit-receive I/Q imbalance. The derived expression quantifies the impact of the I/Q imbalance level at both the transmit and receive sides, the size of the beamforming array, and the input SNR level on performance. Several special and limiting cases are investigated providing new design insights. 2012 IEEE.