BOLL_SYSTEM

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.)

说明：  使用libsvm进行三分类，svm多分类可以类似编程(Use libsvm for three categories, svm classification can be more similar to programming)

It is the document related to noise reduction

xaxa zgr l zurag bitgii hoshgorooroi

fmcw modulation in lpi radars

关于锁模激光器基础的仿真程序。初学者可以参考(About the mode-locked laser based simulation program. Beginners can refer to )

数字低通滤波器的软件实现，运用 matlab语言。(Digital low-pass filter software implementation, the use of MATLAB language.)

说明：  在一些障碍物模型中实现路径规划，能够实时生成路径中的点与整个路径(Path planning is implemented in some obstacle models, which can generate points and the whole path in real time)

papr ofdm slm .it contain report and smatlab simulations.all are working ofdm slm method.slm method

generating maximum legnth sequence bu determining the generator function and initial condition