Performance of two way DF relaying with co-channel interference and channel estimation error

One of the major problems of wireless communication is the channel estimation error and co-channel interference, which causes degradation in the performance of the system. Cooperative communication is one of the most efficient techniques to enhance the performance of wireless systems in the presence of channel estimation error and co-channel interference. In this paper, the performance of decode and forward two-way relay network (TWRN) scheme is evaluated in presence of channel estimation error and co-channel interference. The performance is evaluated analytically in terms of a metric called signal-to-noise gap ratio, which measures the reduction in the signal-to-noise ratio due to channel estimation error and co-channel interference. The effect of different parameters on the performance of the two way relaying scheme is studied. It is that TWRN, cooperative communications not only enhance the BER performance but also reduce the effect of channel estimation error and/ or co-channel interference.