Simulation-of-communication-system

计算电磁学中FDTD（有限时域差分法）三维的算法程序。(FDTD (finite difference time domain method) three-dimensional algorithm program in computational electromagnetics.)

本文主要利用matlab编程工具对直接序列扩频通信的捕获过程进行仿真。仿真主要基于滑动相关法的有关理论,先讨论扩频仿真中起着重要作用的m序列的生成问题,尔后讨论调制信号的产生,然后在信号的捕获中分步讨论,先对捕获的流程进行简单的仿真,再依次加入噪声和多普勒频移后进行捕获仿真(In this paper, using matlab programming tools for direct sequence spread spectrum communication capture process simulation. Simulation of the sliding correlation method is based on the theory, first discuss the simulation plays an important role in spreading the m sequence generation problem, the modulation signal generation and later discussed, and the signal captured by stepping discussion processes the captured first simple simulation, and then followed by adding noise and Doppler frequency shift after the capture simulation)

Intercell Interference Coordination in OFDMA Networks and in the 3GPP Long Term Evolution System

雷达信号处理的一个重要过程，脉冲压缩,可以利用匹配滤波的原理对目标进行定位(An important process for radar signal processing, pulse compression, you can use the principle of matched filtering on the target location)

the function to create the mesh, fro Openfem

用matlab代码实现的霍夫变换，对于初学者有一定的帮助(Matlab code to use the Hough transform, for beginners will certainly help)

直接序列扩频系统在白噪声环境下的仿真（信号采用升余弦滚降成形）(Direct sequence spread spectrum simulation white noise environment)

matlab基础学习必备书籍，内容详细，适合新手(matlab-based learning essential books, detailed, suitable for novice)

nat blaster,测试nat的连通性能.(nat blaster, tests nat to connect the performance )

本程序用于线性调频信号频率的测量，首先产生一加噪线性调频信号，再使用小波滤波去除噪声，最后使用希尔伯特变换法求信号的频率。(This procedure is used to measure the frequency of chirp signal, first generate a chirp signal with noise, and then use wavelet filtering to remove noise, and finally use the Hilbert transform method for the signal frequency.)