4lscma

扩频通信中pn序列码的仿真与研究，m序列，M序列，gold序列(Pn sequence spread spectrum communication and research simulation codes, m series, M series, gold sequence)

计算非平稳随机信号的WVD时频谱的matlab程序(Calculation of non-stationary random signal WVD time-frequency spectrum of the matlab program)

DVB-T（2K模式）同步，仿真最大似然相关（MLE）算法，在符号开始位置出现谱峰(DVB-T (2K mode) synchronization, simulation Maximum Likelihood correlation (MLE) algorithm. Symbol began in the peaks of position)

用matlab仿真零均值高斯白噪声通过低通带通滤波器前后特性，程序完善，结果与理论值非常接近(The zero mean white Gauss noise is simulated by MATLAB, and the program is perfect through the low pass bandpass filter. The result is very close to the theoretical value.)

实现LDPC码校验矩阵的构造，采用Mackay 1A方法(Implementation of LDPC code check matrix construction uses Mackay 1A method)

对数域和积算法LDPC解码器,准确无误，望采纳！(Log-domain sum product algorithm LDPC decoder, accurate, hope to adopt!)

说明：  该文件LDPC码的校验矩阵的matlab代码，可以使用该校验矩阵得到规则LDPC码。(Matlab code of LDPC check matrix)

这是矩阵计算一书的第二部分，由于是从网上下载的，两部分是分开的，没法合并，所以只好分两次上传，欢迎下载浏览。(This is the matrix of the second part of the book, as it is downloaded from the Internet, the two parts are separated, can not be combined, so only two upload, please download the browser.)

TDOA算法包括泰勒，最小二乘法，chan算法及改进算法等(TDOA algorithm includes Taylor, least square method, Chan algorithm and improved algorithm)

一个明智的方法开发调试 利用OPNET调试器(教ODB) 如何调试模型 评介特点和命令 讨论了在调试过程 Step-by调试步骤方法模型(Develop a sensible approach to debugging Teach use of OPNET Debugger (ODB) How to debug models Review features and commands Discuss the debugging process Step-by step methods for debugging models )