LDPC的matlab代码仿真

用VITEBI算法对信道输出解码。这个算法既能用于卷积码的软判决解码，也能用于硬判决解码(failed to translate)

说明：  用粒子群算法选择支持向量机的参数（来自于互联网，在此感谢原创）(With the particle swarm algorithm to select the parameters of support vector machines (from the Internet, would like to thank the original))

说明：  viterbi 解码程序，用matlab编写。希望对大家有用。(viterbi decoding process, using matlab write. Hope to be useful.)

利用MATLAB编写的神经网络源程序，很实用(using MATLAB prepared by the neural network program, a very practical)

说明：  5、绘制散点图。 对发射和接收信号利用scatterplot函数可显示信号星座图的样子及噪声对信号造成的失真程度。在该图中，横轴代表了信号的同相分量而纵轴代表了正交分量。下面的代码还利用了 对接收信号利用modem.deqammod对象的demodulate方法进行解调。解调结果为包含0到15之间整数的列向量。 (5, draw a scatter plot. The transmitted and received signals can be displayed using a function of the degree of distortion scatterplot like and noise signals caused by the signal constellation of FIG. In this figure, the horizontal axis represents the in-phase component signal and the vertical axis represents the quadrature component. The following code is also used to demodulate the received signal using the method of demodulating modem.deqammod object. Demodulation result is an integer from 0 to 15 comprising a column vector.)

基于cost207模型的AM调制的仿真，仅仿真乡村模式，用于课本《移动通信》第三章10题的入门回答(AM modulation cost207 model-based simulation, emulation mode only country, introductory textbook for " Mobile Communications" Chapter 10 questions answered)

matlab 程序代码 12 ex12-Matlab-Examples-Codes_adelshojaei12-Matlab-Examples-Codes_adelshojaei

用MATLAB实现OFDM调制、解调，这样调用模块，其中假设OFDM信号包含6个。(Using MATLAB OFDM modulation, demodulation, so that the calling module, which assume that the OFDM signal consists of six.)

传统的相控阵雷达，发射信号完全相关，通过对每个阵元加不同相移就可以改变波束的发射方向。以这种方式形成的波束通常主瓣较窄，信噪比比较高，若用于跟踪方向先验已知目标或只对空间某一窄的领域进行搜索时非常有利。本代码可以实现正交波束的形成.(Can realize orthogonal beam formation.)

批量计算气泡的面积 和绘制气泡的轨迹在同一张图片上(Calculate the area of the bubble in batch and draw the trajectory of the bubble on the same picture)