Leach

(1)建立DQPSK调制和解调 SIMULINK仿真模型，评估其在AWGN信道和瑞利衰落信道下的误码率性能（画出信噪比变化时的误码率曲线）； (2)基于（1）建立的SIMULINK仿真模型，分别在AWGN信道和瑞利衰落信道下发送一个实际音频文件，在接收端实时播放出来((1) the DQPSK modulation and demodulation SIMULINK simulation model is established to evaluate the bit error rate performance under the AWGN channel and the Rayleigh fading channel (the bit error rate curve when the signal to noise ratio changes). (2) based on the (1) established SIMULINK simulation model, a real audio file is sent under the AWGN channel and the Rayleigh fading channel respectively, and it is played on the receiving end in real time.)

说明：  Q值MATLAB正演反演程序，根据最基本公式编写(Q value MATLAB forward inversion program, according to the most basic formula written)

基于LABVIEW的物体振动频率分析，通过采集物体的声音进行频率的分析，完成信号的处理(LABVIEW body based frequency analysis, frequency analysis performed by the sound collection of objects, the complete signal processing)

绘制三维矢量图， 收集自网络并做了改进， 非常适合科研人员使用(plot a 3D arrow figure)

MATLAB digital image processing distorting mirror, triangle, trapezoid, s-shaped,

说明：  灰度级伪彩色编码，将灰度分为4级添加不同的颜色(Gray level pseudo-color coding)

说明：  利用雷克子波生成数据，包含小波去噪。不同的噪声。(Data of reykjat wave generation)

读取串口调试助手保存的TXT文档，将连续两个8位合并为一个16位数据，然后进行图形化显示，分析了幅频特性，然后对其进行了低通滤波并画图(Read the serial debugging assistant TXT files saved in the continuous two 8 into a 16-bit data, and then graphically analyzed amplitude-frequency characteristics, and its low-pass filtering and drawing)

说明：  matlab 分形压缩研究 分形压缩拥有很高的压缩比，用MATLAB实现时间较C要长 这里供参考(matlab fractal compression Fractal compression research has a high compression ratio, using MATLAB to achieve a longer time than C here for reference)

说明：  产生随机信号，采用4fsk调制方式通过一个水声信道，再采用非相干解调(Generate random signal, use 4FSK modulation to pass through an underwater acoustic channel, and then use incoherent demodulation)