On the mutual information and capacity of coded MIMO with interference alignment

Abstract

In this paper, we discuss the problem of mutual information and capacity for coded MIMO transmission system over interference channel. Firstly, we have formulated the binary and non-binary LDPC coded MIMO system model, which has joint precoder and decoder design to implement interference alignment. Then, the closed-form expression of the mutual information for binary LDPC coded MIMO system is derived. And the system capacity of non-binary LDPC coded MIMO is analyzed. These theoretical results can provide guideline for the design of practical interference alignment. © 2011 Springer-Verlag Berlin Heidelberg.