Full Duplex Relaying with Co-Channel Interference and Channel Estimation Error

Two-way relay has been extensively studied and proves to be more spectral-efficient than direct transmission and one-way relay in many scenarios. In this paper, the performance of decode and forward two-way full -duplex relaying scheme is evaluated in presence of channel estimation error, loop interference and co-channel interference. The performance is evaluated analytically in terms of a metric called signal to interference and noise (SINR) gap ratio, which measures the reduction in the SINR ratio due to channel estimation error, loop interference and co-channel interference. The effect of different parameters on the performance of the two way full duplex relaying scheme is studied. Moreover, the bit error rate performance of the scheme is evaluated by simulation in presence of channel estimation error and co-channel interference. It is found that cooperative communications enhances the performance of the two way relaying and can be used to combat effect of estimation error and co-channel interference.