mqtt收发

PPM调制信号的产生，产生随机信号。亲测可用(The generation of PPM modulation signal)

基于MATLAB平台的通信系统的仿真，RS编码，OFDM调制，加入PLC信道噪声，并进行误码率的检测，运行无误，程序完整。(MATLAB-based communications system simulation platform, RS coding, OFDM modulation, adding PLC channel noise, and make BER testing, run correctly, the program integrity.)

电脑串口控制西门子s7-200程序，可以通过电脑直接控制PLC(Computer serial port control of Siemens S7-200 program)

说明：  本文比较了宽带传输方案中SC_FDE系统与OFDM系统的性能(This article compares the broadband transmission program SC_FDE system and OFDM system performance)

说明：  8. 单径瑞利信道中的四发四收V-BLAST： (1) 请设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真，测量16QAM调制时的误码率性能。画出比特信噪比与信道估计均方误差的关系曲线，画出比特信噪比与误码率的关系曲线。 (2) 计算所设计方案的频谱效率是多少，单位为bit/Hz/s。(8. Four transmit four receive v-blast in single-path Rayleigh channel: (1) please design a specific navigation-assisted channel estimation method and conduct simulation with Simulink to measure the bit error rate performance of 16QAM modulation.The relation curve between the bit signal-noise ratio and the mean square error of channel estimation is drawn, and the relation curve between the bit signal-noise ratio and the bit error rate is drawn. (2) calculate the spectral efficiency of the designed scheme in bit/Hz/s.)

通信系统中的最新的分块差分调制技术的源码(Communication systems up-to-date block differential modulation source)

psk调制,在matlab命令区输入bpskdigital[1 0 1 1 0 0 1 0],1]按运行,即可看到调制波(Psk modulation, input bpskdigital [1 0 1 0 0 0] in the matlab command area, 1] press operation, you can see the modulation wave)

Fiber Bragg Grating Book

基于盲波束形成的波达方向──多普勒稳健估计(Based on Blind Beamforming DOA ─ ─ Doppler robust estimation)

CSMA/CA 协议吞吐量与站点数量的分析，注释较详细(CSMA/CA protocol throughput and the number of stations a more detailed analysis, annotation)