nlos_problem_mobile_location

实现了64qam，16qam和QPSK的误码率仿真(The bit error rate simulation of 64qam, 16QAM and QPSK is realized.)

这是矩阵计算一书的第二部分，由于是从网上下载的，两部分是分开的，没法合并，所以只好分两次上传，欢迎下载浏览。(This is the matrix of the second part of the book, as it is downloaded from the Internet, the two parts are separated, can not be combined, so only two upload, please download the browser.)

说明：  SC-FDE相位噪声比较(SC-FDE phase noise comparison)

对语音信号进行加噪，求它的功率谱，降噪处理(Adding noise to speech signal and reducing noise)

正弦调频信号的时域 频域 模糊度函数的设计(Time domain sinusoidal FM signal frequency-domain ambiguity function design)

产生复高斯的白噪声,这和matlab 自带的不一样，容易理解，但是经对比还是和自带的有区别的(AWGN noice we are very nice. please try to run it snd you will find you are good too.)

是，关于ECG信号特征提取采样率为256Hz的ECG数据设计的滤波器(Yes, on the ECG signal feature extraction 256Hz sampling rate of ECG data for the design of filter)

This document describes about the digital modulation techniques especially about spread spectrum.

matlab仿真LDPC码，对采样点数进行PPM编码，此代码加了保护时隙(The LDPC code is simulated by matlab, and the sampling points are encoded by PPM, which adds protection time slot.)

modbus串口通讯动态链接库 使用同步通讯方式 (modbus serial communication dynamic link library using synchronous communication mode)