fsk

this matlab code is for implementation of rayleigh channel using gans model.

这是我在做超宽带测距定位研究时，编写的一个matlab程序，非常值得大家参考。(This is what I was doing UWB Ranging positioning studies, preparation of a matlab program, very worthy of your consideration.)

代码里有很完整的注释和解释，欢迎大家下载学习，ldpc码的编解码实现。( Code, there are very complete notes and explanations Welcome to download the study, Codec ldpc code implementatio.)

在matlab平台下产生信号序列通过QPSK方式调制通过高斯信道以及瑞利信道，对其中的过程的信号时域以及其频谱，星座图情况进行分析(Matlab platform in the signal sequence under way through the QPSK modulation, as well as through the Gaussian channel Rayleigh Road, on which the process of time-domain signal and its spectrum, constellation diagram analysis)

Poly alphabetic cipher in C

说明：  simulink的基础教程，很初级和适合新手学习(simulink tutorial basis, it is suitable for beginners to learn the primary and)

用teager能量算子来解调出复杂信号的纯调频挑夫函数，用LMD来进行局部均值分解(Pure FM demodulated complex signal porters function with Teager energy operator, using LMD to carry out the local mean)

文中介绍了传统的PID控制原理，PID分为位置式和增量式，计算机控制是数字PID控制。一些 改进的PID控制算法是针对实际应用中的不足提出的，如积分分离式PID控制算法，抗 积分饱和算法，变速积分算法等，实际应用中，控制又分为简单PID控制和串级PID控 制，对一些典型的控制算法，选用典型控制对象用MArLAB软件进行了对应仿真。对仿 真结果进行了对比分析，说明了改进算法的作用。(This paper introduces the principle of the traditional PID control, PID into position and incremental, computer-controlled digital PID control. Some improvements in the PID control algorithm is less than the practical application of the proposed, such as discrete integral PID control algorithm, anti-integral saturation algorithm, changing integration algorithm and so on, practical application, the control is divided into a simple cascade PID control and PID control , for some typical control algorithm, selection of a typical control object MArLAB software with the corresponding simulation. The simulation results of comparative analysis carried out to illustrate the role of the improved algorithm.)

离散系统的数字PID控制仿真和采用积分分离式PID控制器进行阶跃响应.(The number of discrete system simulation and the use of PID control points separate PID controller step response.)

说明：  多目标优化，遗传算法，适合于研究多目标优化的朋友 (Multi-objective optimization, genetic algorithm, suited to study multi-objective optimization of a friend)