channelization1

说明：  5. 在三条径的瑞利信道中，对于直接序列扩频： (1) 请设计DS-CDMA一种具体的码分导引辅助的信道估计方法，接收机分别采用等均益合并、最大比合并。用Simulink进行仿真，画出比特信噪比与信道估计均方误差的关系曲线和比特信噪比与误码率的关系曲线。 (2) 设频率已经同步，请设计DS-CDMA一种具体的单停顿滑动相关时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。 (3) 设时间已经同步，请设计DS-CDMA一种具体的频率同步方法，用Simulink进行仿真，画出比特信噪比与频率同步误差的关系曲线。(5. In three-path Rayleigh channel, for direct sequence spread spectrum: (1) please design a specific code division navigation aided channel estimation method for ds-cdma, and adopt equal-beneficial combination and maximum ratio combination for receivers respectively.Simulink is used to simulate and draw the relationship curve between bit SNR and channel estimation mean square error and the relationship curve between bit SNR and bit error rate. (2) assuming that the frequency has been synchronized, please design a specific single-stop sliding correlation time synchronization method ds-cdma, Simulink simulation, draw the relationship between the bit SNR and the acquisition probability curve. (3) if the time has been synchronized, please design a specific frequency synchronization method ds-cdma, Simulink simulation, draw the relationship between the bit SNR and frequency synchronization error curve.)

for entropy H = entropy(S) this command will evaluate the entropy of S, S should be row matrix H = entropy([X Y Z]) this command will find the joint entropy for the 3 variables H = entropy([X,Y],[Z,W]) this will find H(X,Y/Z,W).. you can use it for any combination of joint entropies Please validate this function before using it

实现各种MIMO检测算法，包括MRC，ZF，MMSE和SIC(Implementation of MIMO Detection Algorithms)

利用MATLAB/simulink实现4FSK调制(Using matlab simulink for simulation modulation 4FSk)

51单片机和三菱变频器MODBUS RTU通信实例，里面有具体的通讯范例，方便初学者学习(51 single-chip microcomputer and mitsubishi inverter MODBUS RTU communication as an example, there is a specific communication paradigm, easy for beginners to learn)

说明：  MIMO 信道容量的仿真 和单天线相比 多天线的信道容量仿真比较 绝对可以运行(MIMO channel capacity of the simulation and compared to single-antenna multi-antenna channel capacity can run a simulation comparing the absolute)

使用verilog实现全数字16QAM调制器，载波频率1MHZ，数据比特流的速率为100Kbps,(the modulation of 16QAM based on FPGA)

国网376.1报文解析工具，所有的报文都能正确解析，支持 Q/GDW 376.1-2009协议和 Q/GDW 1376.1-2013协议(Support Q/GDW 376.1-2009 Communication protocol and Q/GDW 1376.1-2013 Communication protocol)

基本通信信号的产生于识别，AM FM 2ASK 2FSK 2PSK QPSK的产生。（时域图 频域图 基带信号频谱 ）以及分类的识别方法仿真模型(Basic communication signal arising from the recognition, the AM FM 2ASK 2FSK 2PSK QPSK generation. (Time-domain diagram frequency domain Figure baseband signal spectrum) and the classification of simulation models of the identification method)

说明：  D2D信道分配仿真，算法有启发式算法，最优算法等，仿真介入D2D对随干扰门限的变化等。(D2D channel allocation simulation, algorithm has heuristic algorithm, optimal algorithm and so on, simulation involves the change of D2D pair with interference threshold and so on.)