Out of group interference aware precoding for CoMP: A maximum eigenmode based approach

Past studies on Cooperative Multi-Point(CoMP) Processing/Base Station Cooperation (BSC) technique have shown its potential for system capacity improvement. However, many of the previous studies ignore a fact that in a network where multiple CoMP groups co-exist, the interference between CoMP groups would significantly decrease each of the CoMP groups´ performance. To combat this Interference between CoMP groups, we propose a novel precoding technique - Maximum Eigenmode Transmission(MET) CoMP precoding, which is able to effectively combat such interference and achieves 90% better performance than the conventional method in a multi-group CoMP network.