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对于移动通信系统主要有两类衰落:大规模衰落和小规模衰落。大规模衰落表示由于大范围内移动而引起的平均信号能量的减少或路径损耗。而小规模衰落则表现为两种机制:信号的时延扩展和信道的时变特性。对于无线应用,信道的时变特性是由于发射机和接收机相对移动而造成传输路径的变化。这些传播条件的变化速率影响衰落率。如果存在大量反射路径而不存在视行信号分量,此时的小规模衰落称为瑞利衰落(Rayleigh fading),接收信号的包络由瑞利概率分布函数统计描述。这种衰落也就是这次实验我准备研究的-system fo
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This a very simple baseband simulator for SC-FDMA system. This simulator is part of the upcoming book “Single Carrier FDMA: A New Air Interface for Long Term Evolution” (Wiley, Nov. 2008) which I co-authored with professor David J. Goodman at Polytec
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多径时变信道的仿真:单频信号经过多径时变信道 音频信号经过20条传播路径得到的时域及频域波形。
-Time-varying multipath channel simulation: the time domain and frequency domain waveforms single frequency varying channel audio signal through the multipath signal propagation path 20.
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To support the varying Quality-of-Service (QoS) requirements of emerging applications such as those involving continuous media, a new standard IEEE 802.11e has been specified [1]. This standard aims to support QoS by providing differentiated classes
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单频信号经过多径时变信道后,输出信号的包络随时间随机起伏,输出信号的频谱从冲激谱变成一个窄带频谱。径数位20,变化频率从0—2HZ随机均匀抽取。-Single-frequency signal through time-varying multipath channel, the output signal envelope random fluctuations over time, the output signal from the impulse of the spectrum into
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对时变的具有码间串扰ISI的信道,进行信道估计,改善了系统的性能-With the code of the time-varying inter-channel crosstalk ISI to carry out channel estimation and improved the performance of the system
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时变系统的频谱扩展,(信道是平坦的)仿真结果为:滤波后高斯过程的功率谱密度和由滤波器产生的相关高斯序列的时域值-Time-varying system, spread spectrum, (the channel is flat) simulation results as follows: the filtered Gaussian process power spectral density and produced by the filter related to the value of
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基于MATLAB中多径非时变信道仿真与分析,可以实现以下简单信道模型的测试!-MATLAB-based non-time-varying multipath channel simulation and analysis, you can achieve the following simple channel model of the test!
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时变深衰落信道中的自适应均衡技术-Deep fading channel time-varying adaptive equalization......
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通信系统的仿真代码,多径信道的仿真,多径时变的信道仿真。-Communication system simulation code, simulation of multipath channel, time-varying multipath channel simulation.
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《通信系统仿真原理与无线应用》系统地介绍通信系统的设计、分析和仿真方法,还提供了大量极具参考价值的仿真实例。《通信系统仿真原理与无线应用》的全部仿真程序都是采用MATLAB编写的。这不仅方便读者理解仿真的实现过程,还允许读者修改或使用这些代码段来进行自己的仿真开发。章后提供了大量的参考文献和经过精心设计的各类练习题,方便教学。此为中文翻译本。-Principles of Communication Systems Simulation with Wireless Applications is
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Clark无线通信信道模型仿真的Matlab源程序,采用SOS仿真方法。程序内容包括:时变信道的幅度的实部和虚部,幅度概率密度函数,自相关函数,功率谱密度。-Simulation of Clark wireless communication channel model of the Matlab source code, using SOS simulation method. The program includes: the real and imaginary parts of time
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Jake s无线通信信道模型仿真的Matlab源程序,采用SOS仿真方法。程序内容包括:时变信道的幅度的实部和虚部,幅度概率密度函数,自相关函数,功率谱密度。-Simulation of Jake s wireless communication channel model Matlab source code, using SOS simulation method. The program includes: the real and imaginary parts of time-var
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Hoeber无线通信信道模型仿真的Matlab源程序,采用SOS仿真方法。程序内容包括:时变信道的幅度的实部和虚部,幅度概率密度函数,自相关函数,功率谱密度。-Simulation of Hoeber wireless communication channel model of the Matlab source code, using SOS simulation method. The program includes: the real and imaginary parts of ti
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时变信道的频率选择性和时变性。系统的输入是一个BPSK信号。系统的时变特性使BPSK信号作为时间的函数,发生衰减和相位旋转。-Time-varying channel frequency selectivity and time variability. Input to the system is a BPSK signal. System is time-varying characteristics make BPSK signal as a function of time, the o
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generating time varying channel for jakes or flat fading.
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一个快变信道下的信道,用于产生快变信道下的信道参数,适用于信道估计仿真-A fast varying channel channel, used to produce fast time-varying channel parameter channel, suitable for channel estimation simulation
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时变信道仿真,适合水下缓慢时变信道,处理有些慢-Time-varying channel simulation code for simulation of underwater want, when you change the channel processing speed is somewhat slow
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说明: 移动无线信道是一个充满复杂干扰的信道。由环境中的各种障碍物所引起的信号多径传播是其主要特点之一。这个源程主要对多径时变信道模型进行了仿真与性能分析。(Descr iption: mobile radio channel is a channel full of complex interference. Signal multipath propagation caused by various obstacles in the environment is one of its ma
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用于快时变信道的信道估计算法,基于BEM实现(The channel estimation algorithm for fast time-varying channel is implemented based on BEM)
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