ddc lowpass

这是一篇现代通信原理课程的作业报告.题目为几种时频分析方法比较及应用.详细介绍了短时傅里叶变换、小波变换、魏格纳—威利分布和Cohen类时频分布这4种典型时频分析方法,并作了比较(This is a modern communication Principle operating report. Entitled Comparison of several time-frequency analysis and 应用. 详细 Jieshao the short time Fourier transform, wavelet transform, Wigner- Willie distribution and frequency distribution of Cohen Lei This four kinds of typical time-frequency analysis method, and compared)

这个是DFT-S OFDM的接收端平均信噪比PDF和CCDF仿真图(This is the DFT-S OFDM receiving end of the average SNR simulation diagram PDF and CCDF)

说明：  行商问题，自动生成最短路径。该算法可以生成经过拓扑每一点一次且仅一次最后回到起点的最短路径。(TSP problem: how to generate the minimal path for a salesman traveling among a set of points.)

说明：  opnet学习入门视频教程 这个对初学者很有用的(opnet Getting Started video tutorial to learn this very useful for beginners)

说明：  16QAM调制解调，包含QAM的调制解调Matlab程序(16QAM modem, including QAM modem matlab program)

wcdma 编码扩频调制过程。。。。。。。。。。。。。。。。。。(wcdma coded spread-spectrum modulation process )

说明：  m序列发生器(简单型码序列发生器-----simple shift register generator)(m sequence generator (a simple code sequence generator----- simple shift Regi ster generator))

wrap around viterbi algorithm (WAVA) for decoding the tail bitting convolutional code

its a matlab code for ofdm with 16 qam

说明：  实现LDPC信道码的仿真，已在大型软件开发项目中实用(LDPC code and decode matlab)