在基于一阶统计量解圆周卷积的超宽带信道盲估计方法中,存在着要求信道长度必须小于符号周期长度的局限性。使用信道缩短技术,对实际信道的长度进行缩短,估计出缩短信道后再恢复成实际的超宽带信道,有效地解决了这个问题。仿真实验表明,在信道长度大于符号周期长度时,仍然能很好地估计出信道。 In the first-order statistics-based circle-convolution-based UWB blind estimation method, there is a limitation that the required channel length must be less than the symbol period length. Using the channel shortening technique, the actual channel length is shortened, and it is estimated that shortening the channel and then restoring the actual ultra-wideband channel effectively solves the problem. Simulation results show that the channel can still be well estimated when the channel length is longer than the symbol period length.