针对多频带超宽带系统,提出了一种基于信道缩短的信道估计方法。利用循环前缀(CP)结构,在接收机前端设计信道缩短均衡器,解决了循环前缀长度小于信道最大多径延迟时难于估计信道参数的问题。根据均衡器输出序列估计出复合信道,通过反卷积解出原信道参数。计算仿真表明该算法具有良好性能。 For multi-band UWB system, a channel estimation method based on channel shortening is proposed. With the cyclic prefix (CP) structure, a channel shortened equalizer is designed at the receiver front end to solve the problem that it is difficult to estimate the channel parameters when the cyclic prefix length is less than the maximum multipath delay of the channel. The composite channel is estimated based on the equalizer output sequence, and the original channel parameters are obtained by deconvolution. Simulation shows that the algorithm has good performance.