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现代通信系统matlab版（中文）用超星打开(Modern communications systems matlab version (Chinese) open with Chaoxing)

粒子群优化(PSO)算法是计算智能领域，除蚁群算法外的另外一种基于群体智能的优化算法。(Particle Swarm Optimization)

convert the c code to matlab compatible When executing, you need both c file and the m-file

模仿微信打飞机 的Demo 无bug 希望大家一起学习

说明：  matlab用于计算变量间互信息的代码，可用于特征筛选(Matlab code for calculating mutual information between variables)

A DVB-T 2K Transmission simulation of OFDM

補洞程式 新增加速功能 可實現一班基本補洞(Fill the hole add a program to accelerate features a group of basic fill holes)

基于SVPWM的三电平逆变的matlab仿真，DC-DC部分采用定功率单环控制，多抽样率信号处理，pwm整流器的建模仿真，实现串口的数据采集，进行波形数据分析。( Based on SVPWM three-level inverter matlab simulation, DC-DC power single-part set-loop control, Multirate signal processing, Modeling and simulation pwm rectifier Achieve serial data acquisition, Waveform data analysis.)

 结合理论课讲解基于Matlab建立不同信道模型：高斯信道、Rayleigh信道，Recian信道及多径衰落信道模型；  给出QAM/GMSK调制方式下在上述信道模型下的误码率性能分析，分析比较两种调制方式的优缺点；  分析信道参数、信噪比对误码率性能的影响； (Based on Matlab, we construct different channel models: Gaussian channel, Rayleigh channel, Recian channel and multipath fading channel model. The error rate performance analysis of QAM/GMSK modulation mode under the above channel model is given, and the advantages and disadvantages of the two modulation modes are analyzed and compared.  Analysis of channel parameters, signal to noise ratio on the impact of bit error rate performance )

we will easily find out the agriculture region and man made region using hidden markov model