multipath channel model, including fast fading, slow fading, frequency selective fading, flat fading, etc
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根据CD MA系统信号模型和多径信道模型，运用码滤波方法对CD MA系统用户信号及其多径信号导引向量进行估计。
Based on the signal model and the multipath channel model of CDMA system, the steering vectors of multipaths of USES are estimated by using cold filtering method.
接着介绍了超宽带的脉冲形成方式、调制方式、收发机系统结构、信号衰减模型、室内多径信道模型以及各种多址系统，为后面的章节做好铺垫。
Then introduces the pulse waveform, the architecture of the UWB transceiver, the fading models of the signal, the indoor channel models, at last some multiple access systems are presented as follow.
在此基础上提出了一种新的无线信道模型；结合分形插值方法，对多径衰落信号的重构进行了研究。
Then a novel channel model is proposed and fractal interpolation is applied to reconstruct the signals.
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