一种稳健的格基规约非线性预编码算法

A Robust Nonlinear Precoding Algorithm Based on Lattice Reduction

为解决THP预编码在信道矩阵不理想情况下误码率较高的问题,提出了一种在MMSE准则下改进的格基规约THP预编码算法。该算法在原有格基规约THP算法基础上进一步改造用户信道矩阵,使其尽可能满秩,从而增加系统鲁棒性。仿真结果表明,该算法相对原有算法在10d B信噪比之后误码率性能得到提升,性能提升了约3d B。

An improved THP precoding algorithm with lattice reduction under MMSE criterion is proposed in this paper, which intends to solve the problem of high bit error rate when the channel matrix is in bad condition. The user＇s channel vector matrix is further modified by this algorithm, which is based on the original THP preeoding algorithm with lattice reduction, and this proposed one makes the channel matrix full rank as possible and increases the robustness of the system. Simulation results show that the proposed algorithm can improve the BER performance and make the signal -to -noise 3dB higher than the original one after 10dB SNR.