[通讯编程] F0_extraction
使用经验模式分解（EMD）从连续语音中提取基频（和高次谐波）波形。，
Fundamental Frequency (and higher harmonics) waveform extraction from continuous speech using Empirical Mode Decomposition (EMD)., (2021-02-05, matlab, 0KB, 下载0次)
[通讯编程] AM调制与解调系统模型
产生原始模拟信号波形，采用AM调制方式，通过包络检波解调出原始信号波形，通过仿真分析解调原理
Generate baseband signal, simulate FSK modulation and demodulation principle, use coherent demodulation to demodulate FSK modulation signal, and draw the BER curve under different SNR to generate the original analog signal waveform, use am modulation mode, demodulate the original signal waveform through envelope detection, and analyze the demodulation principle through simulation (2021-01-09, matlab, 1KB, 下载0次)
[通讯编程] 程序
1、基带码型仿真
（1）通过仿真观察占空比为50%、 75%以及100%的单、
双极性归零码波形以及其功率谱，分析不同占空比对
仿真结果的影响。
（2） 通过仿真产生一随机消息码序列，将其分别转换为
AMI码和HDB3码，观察它们的波形及其功率谱密度。
2、数字带通调制系统仿真
设计一个采用2ASK（ OOK） 调制的数字通信系统：
产生二进制随机数据，并仿真其对应的2ASK调制波形，
分析其频谱。所产生的调制波形加入不同信噪比的白噪声，
选取合适的接收方案，画出系统误码率曲线，并与理论误
码率进行对比。
1.Baseband pattern simulation
2. Simulation of digital band-pass modulation system (2020-01-08, matlab, 5KB, 下载9次)
[通讯编程] 16QAM 64QAM信号产生及分析
16QAM信号 64QAM信号的产生和分析，星座图，频谱，功率谱
6QAM signal 64QAM signal generation and analysis, constellation, spectrum, power spectrum (2019-05-11, matlab, 436KB, 下载19次)
[通讯编程] QPSKTRY
产生QPSK信号,输出波形，并进行仿真分析，对比分析。
The QPSK signal is generated, the waveform is output, and the simulation analysis and comparison analysis are carried out. (2019-04-24, matlab, 1KB, 下载1次)
[通讯编程] khwpzrw6
1)生成2KHz和8KHz的混合信号,使该信号通过上述滤波器,观察滤波前后的波形变化和频谱分布情况, 2) 在改信号中加入高
1) generate the mixed signal of 2KHz and 8KHz to pass the filter, observe the waveform change and spectrum distribution before and after filtering, 2) add high to the modified signal. (2019-03-26, matlab, 51KB, 下载0次)
[通讯编程] LFM_BC
一种基于LFM和Barker码复合调制的雷达波形，理论上分析了该低截获雷达波形的组成。通过仿真得到复合调制信号的时域波形、频谱图和模糊函数图，与LFM信号和Barker码信号对比分析对复合调制雷达信号的距离和多普勒模糊函数、截获因子等进行了研究。
A radar waveform based on LFM and Barker code modulation is presented. The composition of the waveform is analyzed theoretically. The time domain waveform, spectrum and ambiguity function of the compound modulation signal are obtained by simulation. The range and Doppler ambiguity function and interception factor of the compound modulation radar signal are studied by comparing with LFM signal and Barker code signal. (2018-11-23, matlab, 99KB, 下载56次)
[通讯编程] DSB调制
DSB调制与解调，基带信号和载波信号经过DSB调制得到DSB时域波形及频谱后加噪，再经过带通滤波器，乘以载波解调，低通滤波后得到还原的信号。
DSB modulation and demodulation, baseband signal and carrier signal are modulated by DSB to get DSB time domain waveform and spectrum, then noise is added, then band-pass filter is multiplied by carrier demodulation, low-pass filter is used to get the restored signal. (2018-11-03, matlab, 1KB, 下载2次)
[通讯编程] CP0201
>函数2.4（ppm次调制）
CP020102PPMyth.m
>函数2.5（脉冲整形器）
CP0201L波形M
>函数2.6（PPM TH发射机）
CP0201L发射机2ppm×m
Function 2.4 (PPM-TH modulation)
cp0201_2PPM_TH.m
Function 2.5 (Pulse shaper)
cp0201_waveform.m
Function 2.6 (PPM-TH transmitter)
cp0201_transmitter_2PPM_TH.m (2018-06-07, matlab, 2KB, 下载1次)
[通讯编程] 5.2 4PSK仿真
用MATLAB画出4PSK仿真图,功能完善，实现的结果和理论值非常接近。
Using MATLAB to do 4PSK simulation (2018-04-11, matlab, 1KB, 下载1次)
[通讯编程] 直接序列扩频通信仿真
使用simulink搭建一个直接序列扩频调制系统模型，能够正常运行，有时域波形和频谱波形。
Simulink is used to construct a direct sequence spread spectrum modulation system model, which can operate normally, with time domain waveform and spectrum waveform. (2018-03-23, matlab, 144KB, 下载19次)
[通讯编程] Ch3_2_DSB_SSBplusNoise
通过matlab编程实现了通信原理中的双边带幅度调制（DSB)，并画出了波形。
This source code can realize the DSB mudulation in Communication Principles. (2012-04-20, matlab, 1KB, 下载2次)
[通讯编程] DSB
DSB双边带信号的调制和解调，画出了各个阶段的波形图并将解调后的信号同调制前的信号比较
DSB signal modulation and demodulation (2011-12-20, matlab, 2KB, 下载7次)
[通讯编程] AM
AM调制信号的时域波形和频谱，参数可自己修改
AM modulated signal time-domain waveform and frequency spectrum (2011-10-25, matlab, 1KB, 下载20次)
[通讯编程] 2dpsk
设计了差分编码移相键控(2DPSK)调制解调系统的工作流程图,并利用 Matlab 软件对该系统的动态进行了模拟仿真。利用仿真的结果,从基带信号的波形图可以衡量数字信号的传输质量 由系统的输入和输出波形图可以看出,仿真实验良好 。
Design of a differential phase shift keying encoding (2DPSK) modulation and demodulation system working flow chart of the system using Matlab software to simulate the dynamics simulation. Using simulation results, from the baseband signal waveform can be measured digital signal transmission quality by the system' s input and output waveforms can be seen that simulation is good. (2011-05-01, matlab, 11KB, 下载55次)
[通讯编程] DSP1
1)生成2KHz和8KHz的混合信号，使该信号通过上述滤波器，观察滤波前后的波形变化和频谱分布情况。
2) 在改信号中加入高斯白噪声，观察滤波前后的波形变化和频谱分布情况3) 将上述滤波器改为中心频率为100KHz的带通滤波器，信号源为带外的90KHz和带内的100KHz的混合正弦信号，。
4) 用M文件实现上述低通滤波器。
1) 2KHz and 8KHz to generate the mixed-signal, so that the signal through the above-mentioned filter, filter before and after observation of the waveform and spectrum distribution of the changes. 2) add to the signal in white Gaussian noise was observed before and after filtering and spectral waveform changes in the distribution of 3) will be replaced by the above-mentioned filter center frequency of 100KHz band pass filter, the signal source for the band and the band of 90KHz 100KHz Sine of the mixed signals. 4) achieve the above-mentioned documents with M low-pass filter. (2009-04-08, matlab, 61KB, 下载66次)
[通讯编程] fsk
4fsk调制信号的详细过程，并画出时域波形，有注解
Modulation signal 4FSK detailed process and draw time-domain waveform, there are comments (2008-11-10, matlab, 1KB, 下载380次)
[通讯编程] NRZI
NRZI仿真程序,可以直接生成波形~使用M文件
NRZI simulation procedures can be directly used to generate waveforms ~ M documents (2008-05-28, matlab, 70KB, 下载27次)
[通讯编程] AMI
AMI仿真程序,可以直接生成波形~使用M文件
AMI simulation procedures can be directly used to generate waveforms ~ M documents (2008-05-28, matlab, 84KB, 下载17次)
[通讯编程] 几种编码方式
A. 产生一个长为1000的二进制随机序列，“0”的概率为0.8，”1”的概率为0.2；B. 对上述数据进行归零AMI编码，脉冲宽度为符号宽度的50%，波形采样率为符号率的8倍，画出前20个符号对应的波形（同时给出前20位信源序列）；C. 改用HDB3码，画出前20个符号对应的波形；D. 改用密勒码，画出前20个符号对应的波形；E. 分别对上述1000个符号的波形进行功率谱估计，画出功率谱；F. 改变信源“0”的概率，观察AMI码的功率谱变化情况；
have a length of 1,000 random binary sequence, "0" with a probability of 0.8, "a" with a probability of 0.2; B. above zero AMI data coding, and pulse width of symbols width of 50%, waveform sampling rate Symbol rate for the eight times that he painted before the 20 symbols corresponding waveforms (also given before 20 Source sequence); C. HDB3 code switch to depict the former 20 symbols corresponding waveform; D. Miller to switch codes to depict the former 20 symbols corresponding waveform; E. respectively above 1,000 symbols for the power spectrum waveform estimated to depict the power spectrum; F. Change source "0" the probability to observe AMI code changes in the power spectrum; (2005-04-10, matlab, 58KB, 下载143次)