结合三角分解和SLNR的同频干扰抑制算法

针对多小区多用户下行链路同频干扰问题，提出一种结合三角分解和信漏噪比(signal leakage noise ratio, SLNR)的干扰抑制算法，算法通过对联合信道的三角分解先将小区间干扰减少一半，然后利用SLNR算法和干扰抑制矩阵进一步消除小区间干扰。理论分析表明算法使得接收端不再需要增加用于抑制小区间干扰的矩阵及相应矩阵运算，从而降低了算法复杂度。计算机仿真表明较传统SLNR算法，该算法在系统容量和能量效率等性能方面得到改善。

Co-channel interference suppression algorithm combining triangular decomposition and SLNR

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.