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MATLAB7
- 用小波进行图像处理，以及一个QPSK调制程序，还有用MATLAB实现二维小波分解与重构程序，请大家指正-wavelet image processing, and a QPSK modulation procedure, there are two-dimensional MATLAB wavelet decomposition and reconstruction process, please correct
mtf
- ％ Visualize the effects of MTF (modulation transfer function) ％ in film, lenses, scanners, and sharpening using simulation. Format:
dsnonoise
- 直接序列扩频系统是在发端直接用具有高码率的扩频编码去扩展信号的频谱，而在收端用相同的扩频编码进行解扩使扩频信号还原为原始信号的一种扩频方式。直接序列系统中用的编码序列通常是伪随机序列或叫伪噪声（PN）码。要传送的信息经数字化后变成二元数字序列，它和伪随机序列模二相加(或相乘)后变成复合码去调制载波。在直接序列系统中通常对载波进行二进制相移键控调制(BPSK)。当扩频调制后由天线发射出去，在接收机中要有一个和发射机中的伪随机码同步的本地码，对接收信号进行解扩，解扩后的信号送到解调器取出传送的信息-
ppd
- 发射波形是矩形波，调制方式是DBPSK调制，采用非相干解调。-rectangular wave is launched wave modulation is DBPSK modulation, the non-coherent demodulation.
NRZ
- 调相制的C程序代码-phase modulation system of C code
spm
- 自相位调制的傅里叶线性变换，无啁啾，附带的期刊从源码和仿真两个角度实现了SPM-Linear self-phase modulation of the Fourier transform, chirp-free, with source code and simulation journals from two angles to achieve the SPM
chengxu3
- 有关模拟调制的matlab程序--复读调制，AM信号的解调。-Matlab simulation of modulation-related procedures- repetition modulation, AM signal demodulation.
chengxu7
- 有关载波调制的数字传输的MATLAB程序---载波幅度、相位、频率调制。-Related to modulation of the digital transmission of the MATLAB program--- carrier amplitude, phase, frequency modulation.
chirplet_analasis
- 一种自适应chirplet分解的快速算法 针对信号自适应chirplet分解未知参数多、实现起来比较困难的特点，文献[1]提出了一种新的chirplet分解快速算法。该算法利用计算信号的二次相位函数，得到其能量分布集中于信号的调频率曲线上的结论，此时通过谱峰检测可同时获得chirplet调频率、时间中心和幅度的估计；然后通过解线性调频技术获得其初始频率和宽度的估计，仿真结果验证了本文算法的有效性。 -Chirplet an adaptive decomposition al
LPM
- 用matlab绘制线性调频信号的时域波形，同时对信号进行频谱分析，并考察采样频率以及信噪比对频谱分析的影响。-Matlab drawing with linear frequency modulation signal time-domain waveform, and spectral analysis of signals and the sampling frequency and signal to noise ratio study of the impact of spectrum
SARDopplerEstimation
- 从回波中估计多普勒参数是合成孔径雷达运动补偿的关键。文中研究了多目标回波对参数估计的影响，从理论上推导了估计多普勒中心和调频率对回波的不同要求，并用两个指标举例分析了一段实测机载SAR数据，给出了实际应用中参数估计时选择回波的原则。-Doppler parameters estimation from radar echoes is a key step in SAR(Synthetic Aperture Radar}motion cornpensation． This paper rese
Digitally.modulated.RF.systems-harris
- a very good tutorial about digital modulation from Harris
ofdm
- 基于dct的数字水印，用ofdm对水印信息进行调制-Dct-based digital watermarking with ofdm modulation of the watermark information
test
- 再抽样后，调制前，信后总要先被量化。这里提供一段程序用于解决这一问题。-after sampling, we always need to quantize the signal in order to do the modulation. here i provide a segment of code which can solve this problem
modulation
- Matlab demonstration scr ipt for DSB-AM modulation.
DPCM
- DPCM编码,简称差值编码，是对模拟信号幅度抽样的差值进行量化编码的调制方式.-DPCM coding, referred to as difference coding is to sample the analog signal amplitude to quantify the difference between the modulation coding.
QAM
- QAM的调制一种调制解调matlab仿真，欢迎大家下载，多多支持-QAM modulation a kind of modulation and demodulation matlab simulation, welcome to download, will support
Am_MATLAB
- 用于实现常规AM调制的MATLAB源程序。-Matlab demonstration scr ipt for AM modulation. The message signal is+1 for 0 < t < t0/3,-2 for t0/3 < t < 2t0/3 and zero otherwise.
addd
- 这是一个使用正弦型光栅调制频谱 实现图像左右相加的程序-This is a sinusoidal grating with modulation spectrum around the sum of the process of image
Source-Modulation
- 1.对信源进行AM，DSB,SSB调制 2.信道中各自加入进过带通滤波器后的窄带高斯白噪声,解调每个信号，并画出滤除前后，双边带信号和单边带信号的频谱。-1. Letter source AM, DSB, SSB modulation 2. Add to each channel through the band pass filter into a narrow band Gaussian white noise, each signal demodulated, filtered a