Search - channel doppler

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[matlab] r_xy415851 DL : 0: 毕设的题目，LTE无线信道建模，通过MATLAB仿真了包括多径信道，考虑了多普勒频移以及瑞利信道，考虑了 FJdkAT参数以及 mLBJKWa衰落的多参数信道模型，调试正常。?-Complete set of topics, LTE channel modeling, simulation by MATLAB, including multipath channel, taking into account the Doppler shift and Rayleigh channel, considering the FJdkAT parameter and multi-parameter mLBJKWa fading channel model, debugging normal.
Date : 2025-07-13 Size : 8kb User : qufafv
[matlab] r_xy433030 DL : 0: 毕设的题目，LTE无线信道建模，通过MATLAB仿真了包括多径信道，考虑了多普勒频移以及瑞利信道，考虑了 HuEJFc参数以及 yEjjFvX衰落的多参数信道模型，调试正常。?-Complete set of topics, LTE channel modeling, simulation by MATLAB, including multipath channel, taking into account the Doppler shift and Rayleigh channel, considering the HuEJFc parameter and multi-parameter yEjjFvX fading channel model, debugging normal.
Date : 2025-07-13 Size : 12kb User : pyfojo
[Other] 1Channel-EstimationMIMO DL : 0: 无线衰落信道在无线移动信道中，信号从发射天线经过复杂的传播环境到达接收天线，接收信号为各反射、衍射和散射分量以及信道噪声的复合，因而会产生严重的失真。另外，移动信道中由于移动台运动或信道环境的改变会使信道特性随时间随机变化，接收到的信号由于Doppler效应会产生更为严重的失真。 -OFDM has superior performance when transmitting high rate data in wireless fading channel.
Date : 2025-07-13 Size : 1.11mb User : 龙卷风
[Other] underwater DL : 1: 基于射线模型的浅海水声信道的仿真，采用解方程组算法得出本征路径数N，考虑多径和多普勒效应，并基于此加以自适应均衡技术进行均衡。-Ray simulation model of shallow water acoustic channel based on the use of solutions of equations or algorithms intrinsic number of paths N, consider multipath and Doppler effect, and based on this adaptive equalization techniques to be balanced.
Date : 2025-07-13 Size : 10.9mb User : 王欣
[Other] assign1 DL : 0: 1. 基于simulink搭建一个QPSK发送链路，QPSK调制信号经过了瑞利衰落信道，观察信号经过衰落前后的星座图，观察信道特性。仿真参数：信源比特速率为500kbps，多径相对时延为[0 4e-06 8e-06 1.2e-05]秒，相对平均功率为[0 -3 -6 -9]dB，最大多普勒频移为200Hz。-1. Based on simulink structures, QPSK sent a link, the Rayleigh fading channel after the QPSK modulation signal, were observed before and after signal after the decline of constellation diagram, observation channel characteristic. Simulation parameters: the source is 500 KBPS bit rate, relative multipath time delay of [0 8 e 4 e- 06-06 e-05] 1.2 seconds, the relative average power is [0-3-6-9] dB, most of the doppler frequency shift is 200 hz.
Date : 2025-07-13 Size : 13kb User : 王刚
[matlab] jakes-railay DL : 0: 衰落信道参数包括多径扩展和多普勒扩展。时不变的多径扩展相当于一个延时抽头滤波器，而多普勒扩展要注意多普勒功率谱密度，通常使用Jakes功率谱、高斯、均匀功率谱。- The fading channel parameters include multipath spreading and Doppler spreading. The time-invariant multipath extension is equivalent to a delay-tap filter, while the Doppler spread should pay attention to Doppler power spectral density, usually using Jakes power spectrum, Gaussian, and uniform power spectrum.
Date : 2025-07-13 Size : 2kb User : 刘旺
[Program doc] 2015123541OFDMfreqSychr DL : 0: 多普勒功率谱在多普勒频域估计方法起到关键性作用。结合实际铁路场景,分析了各个场景信道特征和场景对应的多普勒功率谱。 -Doppler power spectrum in doppler frequency domain estimation methods play a key role.In this paper, the actual railway scenes, each channel characteristics and scene corresponding doppler power spectrum.
Date : 2025-07-13 Size : 8.49mb User : 张乐
[3G develop] OFDM_D_N DL : 0: OFDM在多普勒信道下的仿真，包括扩频调制、上变频、升采样等-OFDM in the Doppler channel simulation, the module is full
Date : 2025-07-13 Size : 10kb User : 谢越
[Communication-Mobile] 多普勒频移条件下的 8-PSK调制解调及同步算法仿真 DL : 1: 本程序利用交替优化的方法实现了8-PSK信号在多普勒频移条件下的相位和定时双参数同步，不仅程序注释清晰，而且附上该程序实验报告，力求便于读者理解。(By optimizing alternately, this program realizes two parameters synchronization of phase and timing for 8-psk signal under Doppler frequency shifting channel. For better understanding of readers, I not only note the program clearly, but also provide the experimental report in the rar.)
Date : 2025-07-13 Size : 584kb User : sima大侠
[Communication-Mobile] 2 DL : 1: 2. 关于无线信道的多普勒谱，请回答以下问题： (1) 在某些无线信道中，多普勒频移会引起无线信道输出信号的混叠。请描述产生混叠的各种原因； (2) 无线信道中的多普勒谱有一种经典谱(classic spectrum)，请解释产生这种谱形状的机理； (3) 请用Simulink工具编写代码(S-Function方式)，产生一单径瑞利信道，其多普勒谱为经典谱，其中移动速率为120km/h。并请描述：自己用计算机产生的经典谱是正确的依据。(2. Regarding the doppler spectrum of the wireless channel, please answer the following questions: (1) in some wireless channels, doppler frequency shift will cause aliasing of the output signals of the wireless channel.Describe the various causes of aliasing; (2) there is a classic spectrum in the doppler spectrum in the wireless channel, please explain the mechanism of producing this spectrum shape; (3) please use Simulink tool to write code (s-function mode) to generate a single-path Rayleigh channel, whose doppler spectrum is the classical spectrum, in which the moving rate is 120km/h.And please describe: your own computer generated classical spectrum is the correct basis.)
Date : 2025-07-13 Size : 198kb User : kmdcdy
[matlab] Matlab信道模型 DL : 0: watterson信道matlab仿真,瑞利衰落。。。。(This example shows how to simulate High-Frequency (HF) ionospheric channels, based on the models described in Recommendation ITU-R F.1487. In particular, it shows how to simulate the general Watterson channel model, and other simplified channel models used in the quantitative testing of HF modems. It makes use of the Rayleigh multipath fading channel object and the Gaussian and bi-Gaussian Doppler structures from Communications System Toolbox.)
Date : 2025-07-13 Size : 159kb User : 马欢

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