摘要
虽然判决导引最小均方误差算法（DD-LMS）剩余误差小,但是,在信道眼图闭合的情况下,该算法无法收敛,即不具备冷启动能力。本文根据信噪比确定了判决圆边界,对均衡器的输出进行判决,将常数模算法（CMA）和DD算法有机地结合起来。计算机仿真表明:算法性能稳健,具有冷启动能力和重新启动能力,计算量增加也很小。
Though the decision directed least mean square error algorithm(DD-LMS) has small residual error, when the channel eye close, it can not converge. That is, it has no cold start ability. According to the signal-to-noise ratio, a decision circle is adopted in this paper to decide the equalizer output, which united the constant modulus algorithm(CMA) and decision directed algorithm, computer simulation proves the algorithm has the advantage of stability, cold start and restart ability and low added complexity.
出处
《通信学报》
EI
CSCD
北大核心
2002年第6期104-109,共6页
Journal on Communications
基金
国防科技重点实验室基金资助项目(2000Js23.2.l)
