Partial Joint Processing With Efficient Backhauling Using Particle Swarm Optimization
In cellular communication systems with frequency reuse factor of one, User Terminals (UT) at the cell-edge are prone to intercell interference. Joint processing is one of the coordinated multipoint transmission techniques proposed to mitigate this interference. In the case of centralized joint processing, the channel state information fed back by the users need to be available at the central coordination node for precoding. The precoding weights (with the user data) need to be available at the corresponding base stations to serve the UTs. These increase the backhaul traffic. In this paper, Partial Joint Processing (PJP) is considered as a general framework that allows reducing the amount of required feedback.