微处理机
微處理機
미처리궤
MICROPROCESSORS
2014年
6期
22-25
,共4页
模代数预编码%格基规约%最小均方误差
模代數預編碼%格基規約%最小均方誤差
모대수예편마%격기규약%최소균방오차
Tomlinson -harashima precoding (THP )%Lattice Reduction (LR )%Minimum Mean Square Error(MMSE)
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10dB信噪比之后误码率性能得到提升，性能提升了约3dB。
為解決 THP 預編碼在信道矩陣不理想情況下誤碼率較高的問題，提齣瞭一種在MMSE準則下改進的格基規約THP預編碼算法。該算法在原有格基規約THP算法基礎上進一步改造用戶信道矩陣，使其儘可能滿秩，從而增加繫統魯棒性。倣真結果錶明，該算法相對原有算法在10dB信譟比之後誤碼率性能得到提升，性能提升瞭約3dB。
위해결 THP 예편마재신도구진불이상정황하오마솔교고적문제，제출료일충재MMSE준칙하개진적격기규약THP예편마산법。해산법재원유격기규약THP산법기출상진일보개조용호신도구진，사기진가능만질，종이증가계통로봉성。방진결과표명，해산법상대원유산법재10dB신조비지후오마솔성능득도제승，성능제승료약3dB。
AnimprovedTHPprecodingalgorithmwithlatticereductionunderMMSEcriterionis 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 precoding 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.
