Impact of imperfect channel estimation on successive group interference cancellation techniques

In this paper we study the effect of the channel estimation error on the performance of successive group decoding (SGD) schemes. The contribution of this paper is to evaluate the performance of such systems in the interference MIMO channel environment. Precisely, we aim to assess the sensitivity of such decoding techniques to the imperfect estimation of the channel state information (CSI). The system reliability will be judged using the evaluation of bit error rate (BER) performance. The results of this paper clearly show the critical importance of the accuracy of channel estimation for the receive side group-based interference cancellation (SGIC) schemes.