beamform

QPSK的调制；比较DQPSK和QPSK在通过加性高斯白噪声信道时的误码性能；OFDM系统(QPSK modulation more DQPSK and QPSK in additive white Gaussian noise through the channel bit error performance when OFDM system)

此程序的功能为对采集到的信号进行小波阈值去噪，阈值为改进阈值。(the program is used for wavelet denoise)

结合具体应用，以2倍抽取为例，简要分析了多相滤波的基本原理及具体实现方法，并附带了matlab代码，从实验结果可以看出多相滤波可以实现与传统FIR滤波相同的功能。(Combine concrete application, take 200 extracts as an example, the synopsis analyzes the radical principle that the polyphase filters and concretely carries out a method, and supplementary matlab code, can discover polyphase to filter as a result to carry out to filter same function with traditional FIR from the experiment.)

说明：  1/3倍频程分析。有需要做这方面研究的同志们可以好好看一下。(1/3 octave analysis. There is a need to do research in this area can be a good look comrades.)

包括最后计算压缩图像的峰值信噪比和压缩效果的源码,计算两个矩阵之间的欧氏距离，IDW距离反比加权方法。( Including the final calculation of the compressed image peak signal to noise ratio and compression of the source, Calculation of the Euclidean distance between the two matrices, IDW inverse distance weighting method.)

说明：  利用SVD进行信号降噪，通过fft判断奇异值个数，确定重构矩阵结构(Using SVD to reduce the noise of signal, using FFT to determine the number of singular values, and determining the structure of reconstruction matrix)

matlab时频分析配套源码第6章的程序，请大家共享(Matlab time-frequency analysis supporting source Chapter 6 of the procedures, please share)

this code have fuzzy and pso code

用MATLAB实现dpsk信号调制，载波信号(Using MATLAB to achieve dpsk signal modulation, the carrier signal)

for movie making in matlab