Optimized detection scheme in uplink network MIMO under constraint backhaul

This paper considers the model that two mobile users communicate with a central processer (CP) via two base stations (BSs). The BSs are connected to the CP via orthogonal finite-capacity links. The theoretical capacity of this model is still an open problem. For given capacity of backhaul links, we use private message, common message and joint decoding message to explore a new achievable rate. We also propose an optimization method to obtain the boundary. A better achievable rate region is acquired by our proposed scheme, and optimal power allocation for private message, common message and joint decoding message is derived. In our simulations, the results illustrate how the capacity of backhaul links determines the power allocation of private message, common message and joint message.