CCI Cancellation for Cooperative Communication Systems using MMSE SIC with Optimal Ordering

Abstract

In the cellular environment, there will be channel reuse and therefore co-channel interference from other cells
exists and as a result the performance will be degraded. So it is necessary to reject the co-channel interference. In this
paper, co-channel interference (CCI) cancellation scheme for cooperative communication systems in wireless
communication network has been proposed. In the multipath environment, CCI causes more performance degradation in
wireless network. Several interference signal mitigation methods have been proposed including Maximum Likelihood
(ML), Zero Forcing (ZF), MMSE and Successive Interference Cancellation (SIC). Of all these techniques, MMSE SIC
with optimal ordering will reject CCI efficiently and offers performance improvement compared with conventional SIC.
In this paper, the overall system performance has been demonstrated in terms of bit error rate (BER) by considering
Rayleigh fading channel.