QPSK

用C语言编写的LDPC译码程序，希望对大家有用(Using C language LDPC decoding process, in the hope that useful)

说明：  卷积码、RS码、LDPC码、turbo码的生成及识别。(Generation and recognition of convolutional codes, RS codes, LDPC codes and TurBO codes.)

说明：  基于matlab实现的循环谱估计算法，可以对具有循环平稳特点的信号进行参数估计，如直扩信号和周期调制信号(The cyclic spectrum estimation algorithm based on Matlab can estimate the parameters of signals with cyclostationary characteristics, such as DS-SS signals and periodic modulated signals)

说明：  OPNET软件仿真包交换网络，并在其中加入排队模型并拓展网络拓扑，对于统计量有不同影响(OPNET software simulates packet switching network, adds queuing model and expands network topology, which has different influence on statistics)

本章介绍了用于WAN(广域网)环境的各种协议和技术。在这里概述的题目包括点对点链路，电路交换，分组包交换，虚电路，拨号服务，和WAN设备。在手册第3部分,‘WAN协议’,的各章里将更详细地讲述专门技术。 ( This article introduces the various protocols and technologies used in wide-area network (WAN) environments. Topics summarized here include point-to-point links, circuit switching, packet switching, virtual circuits, dialup services, and WAN devices. Chapters in Part 3, “WAN Protocols,” address specific technologies in more detail. )

基于RWG奇函数的矩量法的阻抗矩阵部分的编程代码(Programming code of impedance matrix part of moment method based on RWG odd function)

LTE prach的信令分析代码,由协议解析出数据处理需要的信息(The signaling LTE PRACH analysis code, the protocol analysis data processing need information )

S7-200 PLC 的初步设计及编程技巧，适合初学者使用。(S7-200 PLC preliminary design and programming skills, suitable for beginners to use.)

说明：  MATLAB实验，实现svm向量机，内含程序代码和数据(Matlab experiment, the realization of SVM vector machine, including program code and data)

北斗卫星接口文件 北斗卫星导航系统 空间信号接口控制文件 （测试版） (Beidou satellite interface file Beidou satellite navigation system space signal Interface Control Document (Beta))