在短波信道建模中，通常采用对高斯白噪声滤波来仿真多普勒扩展效应，这些模型的时域相关值与理论值相差较大。
In HF channel modeling, doppler spread effects are usually simulated by filtering white Gaussian noise. The signal correlation in time domain deviates far from the theoretical value.
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.
其次，基于MIMO信道建模方法分析目前较典型的MIMO信道模型，提出MIMO信道模型准确性仿真验证方法；
Secondly, analyzing some current classical MIMO channel models with basic modeling methods, and offers the validation procedures of simulation of MIMO channel models;
但海试数据时间反转镜处理的定位精度远不如仿真数据处理结果，这就提出了时间反转镜被动定位新的研究内容，即信道建模的正确性和算法的宽容性研究。
But, it shows that the localization precision of sea-test data is much lower than that of simulation data, so that it puts forwards the new TRM algorithm which is more tolerant and more robust.
其次，提出了电力线噪声信道和多径信道的神经网络优化建模方法。
Secondly, power line noise channel and multi-path channel optimization modeling techniques based on artificial neural network are proposed.
根据电磁波在无线信道中传播的随机特性，使用随机射线建模电磁波传播。
According to stochastic characteristics of electromagnetic wave propagating in wireless channels, stochastic rays are employed to model electromagnetic wave propagation.
该算法利用信道的时间平均相关取代统计相关，结合了基于特征值分解的低秩建模，从而近似地实现MMSE估计。
This algorithm utilizes time-average channel correlation matrix in place of exact channel correlation matrix and approximates the MMSE estimator by a low-rank structure.
首先给出回放模型的建模思路以及对无线信道测量方法和测量仪器的要求；
The general method of playback channel modeling was introduced and the requirement on the wireless channel measurement was analyzed briefly.
文章主要讨论了宽带码分多址(WCDMA)网络中无线小区随机接入信道(RACH)的数学建模方法及性能分析。
In this paper, we mainly discuss the mathematical modeling and performances of the Random Access Channel (RACH) of the wireless cells in WCDMA networks.
首先，介绍了电力线通信，测量并分析了电力线信道的噪声和复衰减特性，并分别进行了建模。
First, power line Communication is introduced. The noise and attenuation characteristics of power line channel are measured and modeled.
利用MATLAB及用fir滤波器做信道的传输函数模型对信道噪声和复衰减特性分别进行了建模。
The power line channel noise is simulated by MATLAB and the attenuation is simulated through the channel transmission module of FIR filter.
首先，介绍了电力线通信(plc)，测量并分析了电力线信道的噪声和复衰减特性，并分别进行了建模。
First, power line Communication (PLC) is introduced. The noise and attenuation characteristics of power line channel are measured and modeled.
本文分别对跳频瑞利衰落信道、非均匀散射环境下的瑞利衰落信道和移动台对移动台瑞利衰落信道的建模进行了深入的研究。
The performance of the schemes in condition of slow fading rayleigh channel are theoretically analyzed, and the theoretical expression on reception SNR and bit rate are introduced in this paper.
本文分别对跳频瑞利衰落信道、非均匀散射环境下的瑞利衰落信道和移动台对移动台瑞利衰落信道的建模进行了深入的研究。
The performance of the schemes in condition of slow fading rayleigh channel are theoretically analyzed, and the theoretical expression on reception SNR and bit rate are introduced in this paper.
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