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COFDM
COFDM编码,有完整的OFDM处理流程,simulink搭建模块的方法进行仿真。(COFDM coding, have complete OFDM processing procedure, and the methods of building simulink module simulation.)
- 2011-12-10 21:36:08下载
- 积分:1
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Modeling-Rayleigh-fading-channel-based-on-modifie
This Matlab Code models a Rayleigh fading channel using a modified Jakes channel model.
A modified Jakes model chooses slightly different spacings for the scatterers and scales their waveforms using Walsh–Hadamard sequences to ensure zero cross-correlation.
alpha_n = frac{pi(n-0.5)}{2M} and eta_n = frac{pi n}{M},
results in the following model, usually termed the Dent model or the modified Jakes model:
R(t,k) = sqrt{frac{2}{M}} sum_{n=1}^{M} A_k(n)left( cos{eta_n} + jsin{eta_n}
ight)cos{left(2pi f_d t cos{alpha_n} + heta_{n}
ight)}.
The weighting functions A_k(n) are the kth Walsh–Hadamard sequence in n. Since these have zero cross-correlation by design, this model results in uncorrelated waveforms. The phases ,! heta_{n} are initialized randomly and have no effect on the correlation properties. Matlab fast Walsh-Hadamard transform function is used to efficiently generate samples using this model.
- 2015-03-10 15:15:01下载
- 积分:1
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short_time_FT
实现短时傅里叶变换的功能。分为两种方式:1、matlab自带函数;2、自行编写程序。自行编写的程序效果更加,绘制时频分布图更清晰准确。(附带几篇参考文章)(Short time Fourier transform. Divided into two ways: 1 matlab own function own programming. Write your own program was more plotted frequency distribution more clearly and accurately. (With several reference articles))
- 2012-12-01 16:54:53下载
- 积分:1
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maichongzaosheng
产生脉冲噪声,改变参数的系数,可以获得不同的噪声类型(Generate impulse noise, change the coefficient parameters, you can get different kinds of noise)
- 2014-03-06 14:35:27下载
- 积分:1
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buchang
采用matlab编写的关于当 L=64时,为求得在均匀量化时的最优步长(Prepared by the use of matlab when L = 64 when, in order to achieve the optimal uniform quantization step size at the time of)
- 2009-07-01 16:24:48下载
- 积分:1
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地震勘探中,水平层状介质的合成地震记录制作 synthetic
地震勘探中,水平层状介质的合成地震记录制作(the production of synthetics seismogram in seismic exploration )
- 2020-09-26 18:07:47下载
- 积分:1
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ripley
这个是利用MATLAB实现的KNN算法的实现(This is achieved using MATLAB algorithm to achieve KNN)
- 2007-05-19 12:23:50下载
- 积分:1
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特征提取程序
主要是用于提取超声导波的时域特征,例如偏度参数、峰度系数、形状系数、离散系数等等(Time Domain Characteristics for Extracting Ultrasound Guided Waves)
- 2019-04-20 19:02:25下载
- 积分:1
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jiqirenxueshiyan
该资料为机器人学的实验材料,包括仿真软件,实验题目以及实验解答(The data for the robotics experiment materials, including simulation software, test questions and test answers)
- 2010-06-13 23:53:42下载
- 积分:1
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FPGA
《无线通信FPGA设计》一书中例子的Matlab及verilog代码(" Wireless FPGA Design" a book example of Matlab and the verilog code)
- 2009-12-17 02:11:23下载
- 积分:1