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中文摘要：
MIMO-OFDM架构下提出了收发端均结合减格辅助的传输机制：发送端与接收端分别将减格辅助与THP预编码及QR分解-串行检测相结合,将信道矩阵转化为列近似正交的矩阵,提高了系统的抗噪性能.分析和仿真表明,发送端采用减格辅助THP预编码比传统的基于不同准则QR分解的THP预编码在误码率为10^-2时有1～2dB左右的性能提升,接收端提出的LRA-QRM结合串行干扰对消检测算法相比LRA-MMSE算法有1dB左右的误码性能提升.
英文摘要：
A novel Tomlinson-Harashima precoding（THP）transmission method in MIMOOFDM system was presented,applying lattice reduction auxiliary（LRA）and TH pre-coding in the transmitter and LRA and serial interference detection algorithm in the receiver.This novel transmission method can transfer channel matrix into an approximate orthogonal matrix to significantly improve the anti-noise performance.Simulation and analysis results show that LRATHP transmission can increase the system performance by 1～2dB under error rate of 10^-2 comparing with traditional THP transmission,and LRA-QRM-SIC detection algorithm can provide better performance than LRA-MMSE algorithm by 1dB.
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