DRM外辐射源雷达杂波抑制

信道检错编码，CRC编码，包括详细的注释，很不错的程序(Channel error detection codes, CRC codes, including detailed notes, a very good program)

说明：  matlab里使用simulink仿真出qpsk系统通过AWGN信道的调制解调过程，并分析其误码率(Using simulink in matlab to simulate the modulation and demodulation process of qpsk system through AWGN channel and analyze its bit error rate)

产生正弦信号时域波形及频谱，并通过希尔伯特滤波器。其中希尔伯特滤波器有两种产生方式，一是使用MATLAB自带的FDAtool；二是程序编写。(The time-domain waveform and spectrum of sinusoidal signal are generated and passed through Hilbert filter. There are two ways to generate Hilbert filter, one is to use FDAtool in MATLAB, the other is to write programs.)

说明：  这是一篇讲述多雷达协同干扰策略和方法的论文，可参考进行相关研究。(This is a paper on the strategy and method of multi-radar cooperative jamming, which can be referred to for relevant research.)

说明：  此代码为4ASK发送调制与接收解调的通信系统，为主要代码(Communication system of 4ask transmitting modulation and receiving demodulation)

接入网是电信网的重要组成部分。接入网技术的发展，应用和普及令人瞩目，深受世界各国的广泛重视。本书全面介绍了各种接入网技术。全书共分七章，分别介绍了：接入网基本知识、铜线接入技术，电缆调制解调器接入技术，光接入技术，无线接入技术、接入网接口及其协议、接入网网管技术。 在本书的编写过程中，力求做到内容新颖、知识全面、由浅入深、通俗易懂，注重基本概念和基本原理。本书适用于通信工程专业的本科学生和从事相关专业的技术人员使用。(Access Network is a telecommunications network, an important part of. Access network technology development, application and popularization of eye-catching, by the extensive attention of the world. This book gave a comprehensive account of the various access network technologies. Book is divided into seven chapters, namely the introduction: basic knowledge of Access Network, copper access technologies, cable modem access technology, optical access technologies, wireless access technology, access network interface and its agreements, access network management technology. In the book)

知道完美信道状态信息与不知道信道状态信息的信道容量的对比(Know the perfect channel state information and does not know the channel state information of the channel capacity of the contrast)

提供实现了（2，1，7）卷积码的维特比译码的源程序，采用了最大似然算法，介绍了软判决维特比译码算法过程的三个步骤：初始化、度量更新和回溯译码。(for achieving a (2,1,7) Convolutional Codes Viterbi decoding of the source, using the maximum- likelihood algorithm, introduced a soft-decision Viterbi decoding algorithm of the three steps : initialization, Metric update and backtracking decoding.)

说明：  实现BPSK的载波同步，采用的方法是锁频环，最大似然法频率估计(BPSK carrier synchronization is realized,the method is frequency - locked loop and maximum likelihood frequency estimation)

CDMA技术原理与发展，以及MATLAB仿真源代码(Principle and Development of CDMA Technology and MATLAB Simulation Source Code)