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4下载:
BCH 编解码的MATLAB 实现。BCH码是一类重要而有效的纠正多个随机错误的循环码,由于该码具有严格的代数结构,所以是到目前为止研究得最为详尽、应用最为广泛的一类码,已有多种译码算法。-BCH codec of MATLAB. BCH is a kind of important and effective redress the wrong number of random cyclic code, as the code strictly algebraic structure, it
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一、 本程序采用16QAM调制方式,对一串2进制信源进行调制,采用(7,4)循环码对信源做信道编码,用升余弦滚降函数进行基带调制,再调到高频信道;在信道上加入高斯白噪声,运用匹配滤波器解调,画出解调星座图,运用最小欧氏距离译码判决,再对信号进行信道解码,画出采用信道编码技术和不采用信道编码技术的误比特率图。-First, this program uses 16QAM modulation mode, for a string of two binary source is modulated,
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计DFT,IDFT,FFT,循环卷积,循环移位以及重叠保留法-Of DFT, IDFT, FFT, cyclic convolution, cyclic shift and overlap to retain the Law
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循环码的编译码器matlab源码,能够观察输入信码,自由输入噪声,观察输出码字-Cyclic code codec matlab source code, were able to observe the letter type code, free input noise to observe the output code word
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在matlab下,基于循环前缀的仿真验证源代码,比较详细-In matlab, the simulation based on cyclic prefix for the source code, more detailed
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CYCLIC CODE USED WITH CONVOLUTIONAL CODE INN CDMA Multi-user CDMA system block diagram in Simulink
AND CONVOLUTIONAL CODE WITH PBSK MAPPS IN SIMULINK MATLAB
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OFDM下行的仿真1、产生要传输随机数;
2、进行调制;
3、串并转换;
4、进行IFFT操作(代码中有用到共轭对称向量的IFFT为实数进行简化计算);
5、增加循环前缀;
6、并串转换;
7、输出前滤波;
8、增加信道噪声(加性高斯白噪声);
9、接收端串并转换;
10、去除循环前缀;
11、进行FFT变换;
12、信号解调;
13、误比特率计算;
-OFDM downlink simulation 1, have t
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Cyclic code in matlab
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I want to simulate a MB-OFDM-UWB system in Matlab. I did pure OFDM system
before which consist of convolution code block, modulation block, FFT
block, Cyclic Prefix block, multipath block and corresponding receiver
blocks. However, how to modif
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仿真计算出(15, 11)系统循环码和(15, 5)系统循环码两种码字在BSC信道下的误码率性能曲线-Simulation of the (15, 11) cyclic code and the system (15, 5) cyclic code system of two code words in the BSC channel BER performance curve
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this is a Cyclic Hamming code Simulation in matlab.
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由MATLAB程序产生2Gbi/s的基带OFDM信号先将2^15-1个伪随机序列映射到256个进行4QAM编码调制的子载波上,编码后的OFDM符号再经过IFFT变换将其转换为时域波形,接着添加6.4ns的循环前缀(CP),产生的数据波形再装载到Tektronix任意波形发生器(AWG)中,产生2Gbit/s的基带OFDM信号。基带OFDM信号频谱示意图如图3所示。其中包括256个OFDM子载波256个子载波中200个子信道用来传送数据信号,27个高频和28个低频子信道为了过采样的需要置0,OFD
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循环码的定义以及由生成多项式求解生成 矩阵和系统生成矩阵的过程,并在Matlab环境下写出了循
环码的编码器和解码器代码,实现了编码和译码功能。分析和讨论了
此码发现错误、纠正错误的能力,并讨论了其与线性分组码、Hamming
码等信道编码的区别与联系。
- Definition of cyclic codes generated by the polynomial generator matrix of the process of seeking system, writte
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this matlab code treats the ofdm signal in WIFI standard and calculates its SCD(spectral correlation density) ,the generation of pilots , guard time cyclic prefix -this matlab code treats the ofdm signal in WIFI standard and calculates its SCD(spectr
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在Matlab环境下写出了(15,7)循环码的编码器和解码器代码,实现了编码和译码功能。-Wrote in Matlab environment (15,7) cyclic code encoder and decoder code to achieve the encoding and decoding functions.
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环码:无权码,每位代码无固定权值,任何相邻的两个码组中,仅有一位代码不同。
一个(n,k)线性分组码C,若它的任一码字的每一循环移位寄存器都是C的一个码字,则称C是一个循环码
给出了循环码的定义以及由生成多项式求解生成矩阵和系统生成矩阵的过程,并在Matlab环境下写出了循环码的编码器代码,实现了编码功能-
Ring Code: no right code, each code is no fixed weight, any two adjacent code groups,
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分析了该信号的时域、频域、倒谱,循环谱等,采用累计贡献率的方法,内含心电信号数据及运用MATLAB写的源代码。- Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. The method of cumulative contribution rate ECG data and includes source code written in MATLAB.
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内含心电信号数据及运用MATLAB写的源代码,分析了该信号的时域、频域、倒谱,循环谱等,构成不同频率的调制信号。- ECG data and includes source code written in MATLAB, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. Constituting the modulated signals of different frequ
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分析了该信号的时域、频域、倒谱,循环谱等,包括调制,解调,信噪比计算,内含心电信号数据及运用MATLAB写的源代码。- Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. Includes the modulation, demodulation, signal to noise ratio calculation, ECG data and includes source c
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内含心电信号数据及运用MATLAB写的源代码,分析了该信号的时域、频域、倒谱,循环谱等,采用热核构造权重。- ECG data and includes source code written in MATLAB, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. Thermonuclear using weighting factor.
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