Description: 3G通讯中的walsh码生成和作用演示。
A demonstration of walsh code in 3G-3G communications in the walsh code generation and the role of the demonstration. A demonstration of walsh code in 3G Platform: |
Size: 6144 |
Author:meng |
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Description: Walsh变换的c语言处理实现，可将其通过Matlab接口转换成matlab代码-Walsh Transform c language processing to achieve, can be converted through Matlab interface matlab code Platform: |
Size: 38912 |
Author:张然 |
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Description: 直扩码分多址DS-CDMA是利用高速的WALSH正交码序列作为地址码，与多用户信息数据相乘得到信息数据的直接扩频信号，再经过BPSK调制后发送出去，经过AWGN无线信道的传输后，在接收端与本地产生的地址码进行相关检测，从中将地址码与本地码一致的用户数据选出，把不一致的用户数据删除。-DS-CDMA DS-CDMA is the use of high-speed WALSH orthogonal code sequences as address code, with multi-user information data has been multiplied by the direct spread spectrum data information signal, and then after a BPSK modulated sent through AWGN channel after transmission, at the receiving end with the locally generated address code associated Detect, which will address code with local codes consistent user data elected to delete user data inconsistencies. Platform: |
Size: 5120 |
Author:huangshuangping |
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Description: 一个四用户的扩频通信系统，扩频增益为N=16，采用Walsh码进行直接序列扩频，BPSK调制，无线信道为AWGN(加性高斯白噪声信道)信道(AWGN信道：不考虑通信信道信号时，由宽频范围描述的统计随机无线噪声。)。在接收端进行解扩，解调，判决，通过仿真得到其中一个用户的误比特率与信噪比的仿真结果。-A four-user spread spectrum communication system, spreading gain for N = 16, using Walsh code Direct Sequence Spread Spectrum, BPSK modulation, channel for AWGN (additive white Gaussian noise channel) channel (AWGN channel: do not consider communication channel signals, described by the scope of broadband wireless random statistical noise.). At the receiving end for despreading, demodulation, judgments, through the simulation to be one of a user' s bit error rate and SNR of the simulation results. Platform: |
Size: 9216 |
Author:jehuty |
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Description: 一个四用户的扩频通信系统，扩频增益为N=16，采用Walsh码进行直接序列扩频，BPSK调制，无线信道为AWGN信道。在接收端进行解扩，解调，判决，通过仿真得到其中一个用户的误比特率与信噪比的仿真结果。-A four-user spread spectrum communication system, spreading gain for N = 16, using Walsh code Direct Sequence Spread Spectrum, BPSK modulation, AWGN channel for the wireless channel. At the receiving end for despreading, demodulation, judgments, through the simulation to be one of a user' s bit error rate and SNR of the simulation results. Platform: |
Size: 1024 |
Author:林立夫 |
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Description: 设计一个四用户的扩频通信系统，扩频增益为N=16，采用Walsh码进行直接序列扩频，BPSK调制，无线信道为AWGN信道。在接收端进行解扩，解调，判决，通过仿真得到其中一个用户的误比特率与信噪比的仿真结果。-Designed a four-user spread spectrum communication system, spreading gain for N = 16, using Walsh code Direct Sequence Spread Spectrum, BPSK modulation, AWGN channel for the wireless channel. At the receiving end for despreading, demodulation, judgments, through the simulation to be one of a user' s bit error rate and SNR of the simulation results. Platform: |
Size: 5120 |
Author:杨世斌 |
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Description: These are orthogonal complimentary code version of walsh codes which are or to be used in cdma systems.-These are orthogonal complimentary code version of walsh codes which are or to be used in cdma systems. Platform: |
Size: 1024 |
Author:KRUDZ |
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Description: CDMA中PN、Walsh码应用及调制解调的仿真实现-CDMA in the PN, Walsh code modulation and demodulation application and the Simulation Platform: |
Size: 43008 |
Author:章彩 |
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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: 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: M,GOLD ,WALSH序列自相关和互相关的仿真代码。包括一些复合序列的仿真代码。-M, GOLD, WALSH serial autocorrelation and cross correlation of the simulation code. Including some complex sequence of simulation code. Platform: |
Size: 2048 |
Author:召 |
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Description: (1) 产生数值为±1的用户随机数据；给出Matlab下对应的模块；
(2) 产生并给出64×64的Walsh矩阵，作为用户接入的扩频码；
(3) 利用上述一个用户的扩频码和用户数据演示扩频过程；给出Simulink工作框图；
(4) 利用FFT，计算并画出基带数据和扩频信号的频谱（在一个图中给出）；
-(1) value of ± 1 generated random data users given under the corresponding Matlab module (2) generation and gives the Walsh 64 × 64 matrix, as the user access to the spreading code (3) the use of the a user' s spreading code and spread spectrum user data presentation process given work Simulink block diagram (4) the use of FFT, calculate and draw the base-band spectrum data and the spread spectrum signal (given in a diagram) Platform: |
Size: 9216 |
Author:芊屹 |
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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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Description: It does walsh decoding in matlab.For w5 i.e. 100
Walsh code T = 01100110
For bit a3 at T/2
So a3=1
Similarly same things is do for T/4,T/8……..
Continuing the same steps we get w5=100
Platform: |
Size: 57344 |
Author:dhara |
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Search - matlab code for walsh code