矩阵束算法在信道参数提取中的应用

针对超宽带信号的频率依赖特性,首先分析了频率依赖性UWB信道模型的建立过程,提出采用矩阵束方法提取信道的3个参数:时延、频率依赖因子和幅度,给出了方法算例和仿真实例.为比较算法性能,还同时给出了扩展Prony方法的仿真结果.结果表明,采用矩阵束法可以较精确地估计出频率依赖性UWB信道参数,而且比扩展Prony法的估计误差要小得多,具有更高的抗噪性能.最后,还结合一个实际的井下频率依赖性UWB信道,利用矩阵束算法进行了信道重现.结果与原信道很接近,证明了方法的可行性.

Application of matrix pencil method in parameter extracting of frequency dependent UWB channel

Aiming at the frequency-dependent characteristics of Ultra-wideband signals,the establishment of the frequency-dependent UWB channel model was firstly analyzed.Then the three parameters of the channel were extracted by using matrix pencil method: time delay,frequency-dependent factor and amplitude.Lastly,the method example and simulation are given.To compare with the performances of the two algorithms,the simulation results of extended Prony method were also given simultaneously.The results showed that usin...