PHAT

介绍了数字通信中的QPSK调制解调的原理，通过用Matlab编写脚本程序对QPSK通信系统的发射和接收过程的具体实现进行模拟仿真，绘出信号在理想信道和加噪信道中模拟传输时的时域图，并对各模块进行了频谱分析，所得到的结果与理论基本相符，对于理解QPSK系统的性能并在系统的实际应用上作进一步的设计，提供了有效的参考依据(The introduction was done with the principle of the QPSK modulation and demodulation in digital communications, a script was written by using Matlab program to carry out a simulation of the QPSK communication system ,which contains the concrete realization of transmit and receive process. The time-domain diagram is drew separately when the signal transmits in the ideal channel and in the channel with noise, spectral analysis of each module is also done, the results obtained with theoretical results in the main, which provides an effective frame of reference for understanding the performance of QPSK systems, and the practical application in the system to make further designed.)

LEE滤波算法，用于SAR的相干斑滤波，可以自由设定一些参数，见函数帮助。(LEE filtering algorithm)

matlab的随机数发生器，可以产生各种各样的随机序列，你懂的！(the producer of random sequence)

说明：  PID控制器的优化问题就是确定一组合适的参数Ki,,Kd,Ka，使得指标达到最优。常用的误差性能指标包括ISE、IAE、ITAE、ISTE等。(The optimization problem of PID controller is to determine a set of suitable parameters Ki, KD, Ka, so as to achieve the optimal index. The commonly used error performance indexes include ise, IAE, ITAE, ISTE, etc.)

一份简单的FM调制以及解调的matlab程序,对于刚学习通信系统的朋友有用(A simple FM modulation and demodulation matlab program, for a friend just to learn a useful communication system)

matlab dsp(1． 利用自相关函数法和周期图法实现随机信号的功率谱估计。 2． 观察数据长度、自相关序列长度、信噪比、窗函数、平均次数等对谱估计的分辨率、稳定性、主瓣宽度和旁瓣效应的影响

说明：  一维等离子体FDTD的Matlab源代码，是时域有限差分算法中的重要算法(One-dimensional FDTD the Matlab source code for plasma, FDTD method is an important algorithm in)

CDMA Reference Blockset,CDMA的一个英文文档(CDMA Reference Blockset, CDMA in an English document)

说明：  画出股票的MA平均线,含具体的步骤说明，包括导入数据、算法构造和做出图形(draw the ave line (MA) in stock market)

matlabhow can we use matlab to design a programme for mathe and what we can do for our matlab(how can we use matlab to design a programme for mathe and what we can do for our matlab)