paper5

OFDM matlab 水声通信程序，带有水声同步头，OFDM调制解调(OFDM matlab acoustic communication program, the first sync with the sound of water, OFDM modulation and demodulation)

极化敏感阵列的学习笔记，有助于了解极化敏感阵列的相关知识(Study notes polarization sensitive array, helping to understand the polarization sensitive array of relevant knowledge)

为评估TD_SCDMA下行链路联合检测接收机的性能，使用MATLAB软件进行链路仿真，本程序主要是实现用户QPSK基带调制、扩频、加扰、形成时隙、形成子帧、以及进行脉冲形成滤波，通过加性高斯白噪声信道和瑞利衰落多径信道，信道估计、联合检测等几个主要过程，整个仿真都是在基带进行的。(Link simulation to assess the performance of the TD_SCDMA Downlink joint detection receiver using MATLAB software, this program is the main user QPSK baseband modulation, spreading, scrambling to form a slot to form a sub-frame, as well as for pulse formation filter, through an additive white Gaussian noise channels and Rayleigh fading multipath channel, channel estimation, the joint detection of several major process, the entire simulation in the baseband)

说明：  QPSK通过瑞利信道的MATLAB仿真 包括高斯白噪声和瑞丽衰减信道(QPSK_Rayleigh fading Both the AWGN channel and Rayleigh fading channel)

用于监控PLC，针对的是modbus协议(monitoring PLC with modbus protocol)

说明：  对当前通信信号中常用的数字调相信号BPSK、QPSK、1／4一QPSK、8PSK的调制识别问题，提出了一种基于信号差分高阶累积量的识剐算法。该算法分两个层次进行调制识别，首先利用信号的四阶累积量特征对BPSK、QPSK和{1／4一QPSK、8PSK}信号进行识别，然后再利用信号差分的四阶和八阶累积量特征对1/4-QPSK、8PSK信号进行识别。从理论上分析了的该算法的有效性，并通过计算机仿真验证了算法具有良好的性能。(A recognition algorithm based on differential high-order cumulant is proposed for the modulation recognition problems of BPSK, QPSK, 1/4-QPSK and 8PSK, which are commonly used in current communication signals. The algorithm is divided into two levels for modulation recognition. Firstly, BPSK, QPSK and {1/4-QPSK, 8PSK} signals are identified by using the fourth-order cumulant characteristics of signals, and then 1/4-QPSK and 8PSK signals are identified by using the fourth-order cumulant and eighth-order cumulant characteristics of signal difference. The validity of the algorithm is analyzed theoretically, and the good performance of the algorithm is verified by computer simulation.)

基于多径传输和多普勒频移的 瑞利（Rayleigh）信道的仿真 主要考虑不同条件下的仿真(Based on Multi-Drive transmission and Doppler frequency shift of the Rayleigh (Rayleigh) channel simulation main consideration different The simulation conditions)

说明：  此工程用Visual Studio 2019 编写，目的是用来替换Thorlabs公司自己的GUI Kinesis来控制TDC001伺服电机控制器,方便用户自己控制。(This project is written in Visual Studio 2019. The purpose is to replace the GUI kinesis of thorlabs company to control the tdc001 servo motor controller, which is convenient for users to control by themselves.)

串口程序，实现串口发送，接受文件，用户只有少做修改就可以为自己所有(Serial procedures, implementation serial send, receive documents, the user only a few modifications can make all their own)

研究生数字信号处理讲义，基于奥本海姆原著进行讲授的(Graduate Digital Signal Processing notes, based on the teaching of Oppenheim' s original)