ldpc-decoding

matlab source code from mathworks

使用matlab仿真一个ofdm真实环境的步骤介绍，英文介绍很详细(Matlab simulation ofdm using a step in the real environment, the English introduced in detail)

主要内容(signal_analyzer.rar)如下： test1.txt 第一列为时间t，0.001s为步长；第二列为系统的输入信号；第三列为系统的输出信号。 signal_analyzer.m首先将test1.txt 的数据读入workspace，然后进行FFT，分析出两信号的频率，输出对于输入的幅值衰减（db），输出对输入的相位差。 (Main Content (signal_analyzer.rar) as follows: test1.txt the first time as t, 0.001s for the step the second as the input signal the third as the system output signal. signal_analyzer.m first test1.txt the data read into the workspace, and then FFT, the frequency of the two signals, the output amplitude for input attenuation (db), the output of the input phase difference.)

自举是一种由重采样估计，独立和（蒙特卡洛重采样）等概率设置一个单一的数据统计变化的一个途径。允许的措施估计那里的潜在分布是未知的或者样本量很小。他们的结果与这些分析方法的统计特性相一致。 在这里，我们使用非参数逼近。非参数引导更简单。它不使用该模型的结构，建造人工数据。矢量[易西]是重采样，而不是直接与replecement。这些参数是从这些对构建。 二，回归模型时，应使用在回归方程中的两个变量是随机的，会有错误的，即不是由研究者控制。模式，我用普通最小二乘回归低估了变量之间的错误时，他们都含有线性关系的斜率。据索卡尔和罗尔夫（1995），模型二回归的主题是一对哪些研究和争论仍在继续，最终建议是很难做出。 BOOTGMREGRESS模型II是一个引导程序。这需要s引导和规范样品前坡计算变量。这两个变量的每个转化为具有零均值和标准差的一个。由此产生的斜率是线性回归系数的Y在X里克创造了这个词（1973）几何平均数并给出了一个模型II回归广泛审查。它也被称为引导标准的主要轴线(The bootstrap is a way of estimating the variability of a statistic from a single data set by resampling it independently and with equal probabilities (Monte Carlo resampling). Allows the estimation of measures where the underlying distribution is unknown or where sample sizes are small. Their results are consistent with the statistical properties of those analytical methods. Here, we use the Non-parametric Bootstrap. Non-parametric bootstrap is simpler. It does not use the structure of the model to construct artificial data. The vector [yi, xi] is instead directly resampled with replecement. The parameters are constructed from these pairs. Model II regression should be used when the two variables in the regression equation are random and subject to error, i.e. not controlled by the researcher. Model I regression using ordinary least squares underestimates the slope of the linear relationship between the variables when they both contain error. According to Sokal and Rohlf (1995), t)

模糊C均值聚类算法的实现，FCM模糊聚类程序，matlab(FCM clustering code,matlab)

pso的matlab已通过编译运行的源程序代码(pso source code)

Add pilot symbols to the input data just before transmission 2. Implement cyclic prefix (CP), use 10 of symbol length. Divide the 64 input data points into 8-bit streams, generate and append the CP based on each symbol 3. Include complex noise into transmitted signal Organization of Transmitter end of OFDM System a. Generate Data b. Modulate c. Serial to Parallel d. Cyclic Prefix (CP) e. Add Pilot points f. IFFT g. Parallel to Serial

将ACSII格式pro/E生成的STL文件读入matlab(Import Pro/E file into Matlab)

鉴于求matlab版本的Penman-Montieth方程未果，本人编写了程序，其中a,b取值是黄土高原适合的值，可以自己调整。步骤明了，简单易懂(View of the demand matlab version of the Penman-Montieth equation unsuccessful, I write a program, where a, b value is the value of the Loess Plateau suitable, you can make their own adjustments. Steps to understand, easy to understand)

说明：  主要用于多信号的接收，实现全概率信号的截获和接收(Is mainly used for multi-signal receiver, the probability of signal interception for full and receive)