Complex LMS Algorithm is researched and the TCM adative equalizer with pre-decision is designed. A new method with Euclidian distance associated with energy distribution characteristic for decision is presented.

• 研究了复数LMS算法，设计出基于预判决的TCM自适应均衡器：给出一种基于欧氏距离和信号能量分布联合判决的算法，能够在载波恢复不理想时提高预判决的可靠性。