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walsh和pn码的生成程序，用C语言实现，可供MATLAB调用-code generation process, using C language, calling for MATLAB
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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
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CDMA中正交walsh码，用来扩频的matlab 仿真程序。-CDMA in the orthogonal walsh code for spreading the matlab simulation program.
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Generates the Walsh-Hadamard codes and checks orthogonality
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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
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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 in
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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
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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 modul
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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.
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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
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A simple program for simulation of CDMA system with Walsh-Hadamard Code.
Result of this program is plot of BER vs SNR.
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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
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MC-CDMA Walsh code for the communication systems.
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this walsh code sequnce for mmse-this is walsh code sequnce for mmse
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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 th
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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.
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(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
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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-co
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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
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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
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