QPSK定时同步代码，采用Gardner定时同步算法 qpsk_demod

此代码通过随机生成二进制码，对其进行二进制差分调制，以及加入高斯白噪声后对其解调计算误码率，绘制出其输入信噪比与输出信噪比的实验曲线及理论曲线的比较。(This code generates binary codes randomly, modulates them by binary differential modulation, demodulates them with Gauss white noise and calculates the bit error rate, draws the experimental curve and theoretical curve of their input signal-to-noise ratio and output signal-to-noise ratio.)

串口通信工具，简单实用支持多速录。串口通信工具，简单实用支持多速录。(serial communication)

仿真MIMO系统，采用STBC编码，发射天线数目为2，接收天线数目为2(The MIMO system is simulated with STBC coding, the number of transmit antennas is 2, and the number of receiving antennas is 2)

一个基于python 的V2V仿真代码。(the code is about V2V communication simulation)

这个matlab代码仿真了M-QAM的传输。M的取值不同，调制方式分别为4QAM，16QAM，64QAM等。传输信道为AWGN信道，能出误码率曲线。(The matlab code simulation of the M-QAM transmission. The value of M, the modulation mode of 4QAM, 16QAM, 64QAM. The transmission channel is AWGN, the BER curves.)

HLP A+ Modbus 标准通讯协议格式，上位机发送数据格式，正确时变频器返回数据格式(This bit will be set to logic 1 when the receive buffer has been read and contains no new information. If there is new information available in the receive buffer that has not been read, this bit will return to logic 0. RXBMT = 1 when in Master Mode.)

OFDM的QPSK及其调制matlab程序(OFDM-QPSK modulation matlab and its procedures)

子载波功率资源分配，OFDM技术将信道分成许多正交子信道，在每个子信道上使用一个子载波进行调制，并且各个子载波并行传输(Power resource allocation of the sub-carriers, OFDM technology will channel into a number of orthogonal subchannels, in each subchannel to use a sub-carrier modulation, and the respective sub-carrier parallel transmission.)

信号处理综合建模仿真 1、 楼体模型的建立。 2、 实际环境干扰（如树木遮挡、环境噪声、系统内部噪声等）的加入。 3、 信号的反射与穿透衰减的考虑。 4、 天线扫描方式的确定。 5、 空间-SNR三维图像的绘制。(Integrated Modeling and Simulation of Signal Processing)

截获接收机采用时频分析进行跳频通信的参数估计程序(Intercepting the parameter estimation procedure of the receiver for time-frequency analysis for frequency hopping communication)