根据CDMA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.
本文第一章绪论首先分析了无线信道的特性，介绍了小尺度衰落模型，多径衰落模型以及WSSUS信道模型。
The first chapter introduced the characteristics of the wireless channel, the small-scale fading model, multi-path fading model and WSSUS channel model.
本文主要介绍由实验测量和统计分析方法得到的UWB信道模型，包括UWB系统的路径损耗模型和多径衰落模型。 u。
This paper will introduce the channel models for UWB, which include path loss models and multi-path fading models obtained by large measurements and statistical analysis.
文中推导了采用AR模型和MA模型对多径信道建模的正则方程，提出了采用混合模型消除直达波与杂波的迭代算法。
In this paper the regular equations of ar and MA models built for multipath channels are derived, and an iterative algorithm of direct signal and multipath clutter cancellation is proposed.
本文在瑞利衰落模型下，研究了高频电离层信道中多径时延与多普勒频移的随机特性。
In this paper, with Rayleigh fading the random characteristics of multipath time delay and Doppler shift in HF ionospheric channels is discussed.
然后在分析移动信道衰落特性的基础上，分析了多径瑞利信道的数学模型，并对基于这种模型的各种信道估计性能进行了仿真分析。
Then mathematic model of multi-path Rayleigh fading channels are presented based on the discussion of mobile fading channel characteristics. At last, the simulation results and analysis are given.
本文分析了数字电视地面广播通信信道具有长脉冲响应的多径衰落的特点，从频域上表达了其多径衰落信道模型；
The characteristics of the digital television terrestrial broadcasting (DTTB) channels with long impulse responses are analyzed, and the frequency domain multipath channel model is given.
在多径多址干扰DS CDMA环境中，本文根据空时信号模型，用扩展的盲方法估计用户信道，从而进行盲mmse检测。
In DS CDMA channels with multipath and multiple access interference, this paper estimates blindly the user channel with extended space time channel model to process the blind MMSE detection.
在微波视距通信中通常采用二径模型来描述信道，简要介绍了二径模型的频率响应、损伤参数以及多径时延与天线高度、通信距离的关系。
This paper introduces briefly the frequency response, damage parameter of two-ray multipath model and the relationship between multipath time delay, antenna height and communication distance.
讨论了莱斯多径衰落信道模型在两类常规测向技术中的应用。
This paper discusses the application of Rician Distribution multipath descent in two kinds of conventional direction-finding.
在此信道模型中，多径数目少则几十多则几百，信道估计的好坏直接影响系统的性能。
The number of paths varies from dozens to hundreds, whose estimation accuracy influences system performance.
在此信道模型中，多径数目少则几十多则几百，信道估计的好坏直接影响系统的性能。
The number of paths varies from dozens to hundreds, whose estimation accuracy influences system performance.
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