Journal of Communications
In this paper, the authors analytically studies the influence of IQ mismatch on the performance of multiple-antenna Orthogonal Frequency Division Multiplexing (OFDM) systems based on the zero-IF architecture. First a system model for such a Multiple-Input Multiple-Output (MIMO) OFDM system experiencing both Transmitter (TX) and Receiver (RX) IQ imbalance is derived. This is used to obtain analytical expressions for the probability of error in symbol detection for MIMO OFDM systems in Rayleigh faded multipath channels. The derived results can be used to find matching specifications for the TX- and RX-branches for different multicarrier MIMO systems.