Robust base-station cooperation scheme with intelligent information processing

In this paper, a robust cooperation scheme is proposed with Dempster-Shafer (D-S) evidence theory to solve the problem of joint detection in the cellular cooperation networks. Since base-stations in wireless systems are connected by a backbone network, the exchange of information through the backbone network is considered between the base-stations to help each other in signal detection process. A novel signal combination and decision scheme is proposed for base-station cooperation. Taking advantage of multiple information sources, more reliable decision statistics can be achieved with multiple evidences. Distributed multiuser detection algorithm is proposed with local information exchanging among neighbor base stations, and compared in terms of error rate performance. Simulation results verify that the proposed method outperforms conventional detection algorithm. At different interference level, the proposed algorithm almost has same performance, which is more robust than existed algorithms.