Abstract:

Considering the problem of multicell multiuser co-channel interference in the downlink, an interference suppression algorithm combining triangular decomposition with signal leakage noise ratio (SLNR) is proposed. The algorithm suppresses half of the inter-cell interference by triangular decomposition of the joint channel matrix, and further eliminate the remaining interference by SLNR algorithm and interference suppression matrix. Theoretical analyses show that the receivers may not require additional matrix for the inter-cell interference suppression and the corresponding matrix operations and thereby the algorithm complexity is reduced. Simulation results show that the performance of system capacity and energy efficiency of the presented algorithm outperforms the traditional SLNR algorithm.