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说明：  《数字通信（第四版）》答案 《数字通信》(第4版)是数字通信领域的一本经典教材,通过对概率论及随机过程的复习,详细介绍了数字和模拟信源编码、数字调制信号和窄带信号与系统的特征、加性高斯白噪声中数字通信的调制和最佳调制与检测方法、基于最大似然准则的载波相位估计和定时同步的方法、不同信道模型的信道容量及随机编码、带限信道的信号设计、受到符号间干扰恶化信号的解调与检测问题、自适应信道均衡、多信道与多载波调制、扩展频谱信号和系统、衰落信道上的数字通信。(The solution of "Digital communication" " Digital communication" (4th edition) is a digital communications of a classic textbook in the field, through the review process, the probability of randomly addressed, details of the digital and analog source coding, digital modulation signal and the narrowband signal and system characteristics, additive white Gaussian noise in digital communication modulation and the best modulation and detection methods, based on maximum likelihood criterion of carrier phase estimation and time synchronization method, different channel model of channel capacity and random coding, band-limited channel signal design by ISI worse signal demodulation and detection, adaptive channel equalization, multi-channel and multi-carrier modulation, spread spectrum signals and systems, fading channel digital communications.)

这是一种优化的FCM算法 可以自动确定分类数 有关于c,m的改进(This is an optimization of the FCM algorithm to automatically determine the number of categories on the c, m improvement)

该程序是使用Matlab仿真协同通信的DF（解码转发）基本性能，基本模型S-R-D三个节点，接收端使用MRC（最大比合并）。固定DF由于SR信道的错误，其性能受到限制，在大SNR情况下不能获得有效分集。而当SR距离足够近的时候，可能获得一定的分集增益。(AF and DF simulation procedure code)

实现了用匹配滤波器对多用户信号中的期望用户进行检测(Achieved with a matched filter on the multi-user signal detection in the hope that users)

qpsk的方波滤波，利用matlab编写M文件，调试成功，并描绘滤波图形。(the qpsk square wave filter using Matlab prepared M-file debugging success, and a description of the filter graphics.)

matlab常用函数命令，各个工具箱中所用到的都包括，还有simulator常用仿真命令，(some important function for matlab ,including all of the tool boxes and simulator)

Astrodynamics library file crack

two-way-relay场景下，中继处理矩阵的设计，仿真分析了DPC-ZF及DPC-MMSE算法的性能要由于AF与ZF算法性能。(In the two-way-relay scenario,simulation show that both DPC-ZF and DPC-MMSE have a higher throughput and lower BER performance compared with the traditional AF algorithm and ZF algorithm.)

汽车振动自由度模型，汽车振动数学模型，k1f 前轮胎刚度 k1r 后轮胎刚度 mf前轮质量 mr后轮质量 kf前悬架刚度 kr后悬架刚度 cf前悬架阻尼 cr 后悬架阻尼 k 座椅刚度 c座椅阻尼 θ汽车俯仰角 m0汽车悬挂整体质量 m座椅质量 (Vibrational degrees of freedom vehicle model, mathematical model of vehicle vibration)

Mie theory code for simulating optical scattering by small particles