DMT系统中MMSE均衡算法的优化
Optimization of MMSE Equalization Algorithm in DMT System
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摘要: 在分析离散多音系统中时域均衡前后信道能量分布的基础上对MMSE算法进行了改进,提出了一种预估计时延的算法,使得运算量大幅度下降.对算法中代价函数进行优化,实验证明,优化后的算法在均方误差同等的情况下,传输速率和信噪比都比原有算法有较大的提升.Abstract: On the base of analyzing the distribution energy between equalized channel and the no-equalized channel, a practical delay-estimation algorithm is proposed, it makes a significant decline in the amount of computing. The cost function of the MMSE equalization algorithm is improved, as the simulation shows, under the conditions of the same mean-square error, the bit rate and the SNR are better than the original algorithm.