A performance analysis about impact of I/Q imbalance in AF two-hop relay system

In this paper, we investigate the operation of amplify-and forward (AF) two-hop relay networks in the available of in-phase and quadrature-phase imbalance (IQI) at the relay. A close-form analysis is set up in the high signal-to-interference-plus-noise ratio (SINR) mode, where IQI effects in a top result on the SINR. From there, we can see that the time division factor, the energy conversion coefficient, the position of the relay as well as SINR impacting on performance of the IQI system. Depending on practical situation, we can decide to use which model conformably.