Description: walsh码的生成程序,小m序列的生成程序,以及求序列之间周期和非周期相关函数-code generation process, small m sequence generation process and seek sequence between cycles and cycle-related function Platform: |
Size: 1024 |
Author:杨元 |
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Description: rake接收机的链路生成程序，包括短码生成，长码生成，哈达码变换，瑞利信道，以及多径衰落等。-rake receiver of the link generated procedures, including short-code generation, long-code generation, Hadamard transform, Rayleigh channel, as well as multipath fading and so on. Platform: |
Size: 2048 |
Author:王波 |
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Description: 使用MATLAB完成CDMA系统的相关接收机，其中哈达码矩阵为128阶，仿真比特信噪比为-10DB-CDMA system using MATLAB to complete the relevant receivers, which Hadamard matrix of 128 bands, simulation-10DB-bit signal to noise ratio for Platform: |
Size: 1024 |
Author:王莉 |
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Description: 任意维Walsh码(包含①直积法②系数（二进制）相乘法)的产生，有时域图及相关性图。-Victoria Walsh of arbitrary code (including the direct quadrature method ① ② coefficient (binary) multiplication phase) generation, sometimes the domain map and correlation chart. Platform: |
Size: 1024 |
Author:昌平荣 |
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Description: A simple program for simulation of CDMA system with Walsh-Hadamard Code.
Result of this program is plot of BER vs SNR. Platform: |
Size: 26624 |
Author:Ardalan |
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Description: Walsh-Hadamard codes are mutually orthognal codes,
thus when used in synchronous CDMA, the interference between users is zero.
This programm generates Walsh-Hadamard codes and also checks the orthogonality.
You can change the code length by changing value of "code_length" at the top of program Platform: |
Size: 1024 |
Author:ry |
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Description: 这是基于matlab的图像哈达玛变换域数字水印源代码。-This is based on the Hadamard Transform Image matlab domain digital watermarking source code. Platform: |
Size: 4096 |
Author:Mark Li |
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Description: 一段对已知像素的正方形图像进行Hadamard变换的原代码，可设置变换阶数等参数。-For some of the known image pixel square Hadamard transform the original code, you can set parameters such as changing the order. Platform: |
Size: 1024 |
Author:王凯 |
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Description: it is a code in MATLAB for calculation of bit error ratio vs signal to noise ratio , for multiuser code division multiple access .. usually in any communication system calculation of BER is very important to know the performance of system .. so in this program multiuser CDMA system is used ,, spreading is done using HADAMARD matrix .. or WALSH code .. and BER vs SIGNAL to NOISE ratio graph is computed-it is a code in MATLAB for calculation of bit error ratio vs signal to noise ratio , for multiuser code division multiple access .. usually in any communication system calculation of BER is very important to know the performance of system .. so in this program multiuser CDMA system is used ,, spreading is done using HADAMARD matrix .. or WALSH code .. and BER vs SIGNAL to NOISE ratio graph is computed Platform: |
Size: 2048 |
Author:hassan |
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Description: 使用matlab的m语言开发，功能为rake接收机的链路生成。其中包含短码生成成，业务信道长码生成，瑞利衰落信道代码， 哈达码变换，用户原始数据扩频和信道衰落
-Use Matlab m-language development, functional link generated for the rake receiver. Contains short code generated into business channel long code generation, code Rayleigh fading channels, Hadamard transform raw data of users spread spectrum and channel fading Platform: |
Size: 2048 |
Author:权力 |
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Description: Matlab code to study the decorrelation and energy packing efficiency of three transform
techniques: Karhunen-Loève transform (KLT), discrete-cosine transform (DCT), and Walsh-Hadamard transform (WHT). Using a given vector of signal samples, it transforms the signal vector, quantize the transformed samples, and reconstruct the signal samples from the quantized samples Platform: |
Size: 2048 |
Author:cs |
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Description: 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 \beta_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{\beta_n} + j\sin{\beta_n} \right)\cos{\left(2\pi f_d t \cos{\alpha_n} + \theta_{n}\right)}.
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 \,\!\theta_{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.-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 \beta_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{\beta_n} + j\sin{\beta_n} \right)\cos{\left(2\pi f_d t \cos{\alpha_n} + \theta_{n}\right)}.
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 \,\!\theta_{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. Platform: |
Size: 2048 |
Author:Manzar Hussain |
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Description: It includes coding for walsh code encoding in matlab.The Walsh functions can be generated (or computed) by many methods. We can construct the Walsh functions by:
• Using Hadamard matrices
• Exploiting the symmetry properties of Walsh functions themselves.
• The Hadamard matrix is a square array of plus and minus ones, {+1, -1}, whose rows and columns are mutually orthogonal
-It includes coding for walsh code encoding in matlab.The Walsh functions can be generated (or computed) by many methods. We can construct the Walsh functions by:
• Using Hadamard matrices
• Exploiting the symmetry properties of Walsh functions themselves.
• The Hadamard matrix is a square array of plus and minus ones, {+1, -1}, whose rows and columns are mutually orthogonal
Platform: |
Size: 264192 |
Author:dhara |
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Search - matlab code HADAMARD