一种应用混沌编码技术的盲信道估计研究

A Study on Blind Channel Estimation Using Chaotic Coded Technique

提出了一种新的基于动态的重叠合 (DBD)算法 ,适用于移动通信的盲信道估计 .当无线信道用自回归模型描述时 ,采用logistic映射产生的混沌编码信号 .在一个使用混沌编码的语音传输方案中证明了这种算法的可行性 ,与现有的有限冲击响应数字自适应滤波器最小均方 (FIR DAF LMS)算法相比 ,这种算法具有应用广泛 。

A novel DBD algorithm is presented in this paper that can be exploited in blind channel estimation. Chaotic coded signals generated by the logistic map are employed by this algorithm while the channel is represented by an autoregressive model. The applicability of this algorithm is demonstrated in a speech transmission scenario using chaotic coded speech and is compared with the existing FIR_DAF_LMS algorithm.