matlab-gongjuxiang

基于simulink的现代通信系统仿真。很好的仿真源码！ ( Simulink-based simulation of modern communication systems. A good source of simulation! )

说明：  供大家学习UWB的simulink建模,希望大家多多交流(UWB for them to learn the simulink model, I hope things to share)

文件包含基于Matlab编写的一些先进PID控制程序，其中包括专家PID，大延迟Dalin算法，大滞后Smith算法，串级PID控制，遗传PID，遗传辨识算法。可在Matlab中直接运行。(Matlab based on the preparation of a document contains a number of advanced PID control procedures, including expert PID, large delay Dalin algorithm, large time delay Smith algorithm, cascade PID control, genetic PID, genetic identification algorithm. Can be run directly in Matlab.)

MATLAB演示电磁波，可以显示电场和磁场分量(MATLAB demonstration of electromagnetic waves)

作匀加速运动的空中目标的航迹示意图：该模型可以表示空中目标的直线运动、俯冲、上仰或者陆地目标的上下坡运动(For uniformly accelerated motion of air target track diagram: This model can represent linear motion aerial targets, dive, pitch up or downhill movement on land targets)

最原始的灰色预测，matlab程序，可直接使用(Most original gray forecast, matlab program, can be used directly)

matlab 仿真实例，对于matlab仿真具有很重要的意义(matlab simulation, matlab simulation for a very important significance)

逆变模型，自己建立的一个风力发电系统中的仿真模型，仿真出的结果很好(inverter model)

说明：  生成调制信号数据集 信号集包括2ASK，2PSK，2FSK，4ASK，4PSK，4FSK，8ASK，8PSK，8FSK，16QAM，64QAM，信号比范围-20db至18dB，调制到中频。 信号参数 符号率fb：1e3 载波频率fc：2e3 采样频率fs：64e3 信号频道：awgn，rayleigh(Generating Modulation Signal Data Set Signal sets include 2ASK, 2PSK, 2FSK, 4ASK, 4PSK, 4FSK, 8ASK, 8PSK, 8FSK, 16QAM, 64QAM, signal ratio range - 20 dB to 18dB, modulated to intermediate frequency.)

说明：  5. 在三条径的瑞利信道中，对于直接序列扩频： (1) 请设计DS-CDMA一种具体的码分导引辅助的信道估计方法，接收机分别采用等均益合并、最大比合并。用Simulink进行仿真，测量BPSK的误码率性能，画出比特信噪比与信道估计均方误差的关系曲线，画出比特信噪比与误码率的关系曲线，请解释在误码率为0.01时，两种合并方式所表现的不同的物理意义。 (2) 设频率已经同步，请设计DS-CDMA一种具体的单停顿滑动相关时间同步方法，用Simulink进行仿真(自己编写代码S-Function方式)，分析所设计方案的时间同步精度，画出比特信噪比与捕获概率的关系曲线。 (3) 设时间已经同步，请设计DS-CDMA一种具体的频率同步方法，用Simulink进行仿真(自己编写代码S-Function方式)，画出比特信噪比与频率同步误差的关系曲线。 (5 In the three path Rayleigh channel, for direct sequence spread spectrum: (1) Please design a specific DS-CDMA code division guide-assisted channel estimation, receiver, etc were used to benefit the merger, the maximum ratio combining. With the Simulink simulation, BPSK BER performance measure, draw-bit signal to noise ratio and channel estimation mean square error of the curve, draw the signal to noise ratio and bit error rate curve, please explain in bit error rate 0.01, the two methods are combined performance of the different physical meaning. (2) frequency has been set up synchronization, a specific design of DS-CDMA single-stop sliding correlation method of time synchronization, simulation with Simulink (S-Function code their own way), analyze the design of time synchronization accuracy, draw bit signal to noise ratio and capture probability curve. (3) set time has been synchronized, a specific design of DS-CDMA frequency synchronization method, simulation using Simulink ()