Comm_system

IMAGE COMPRESSION USING DISCRETE WAVELET AND DISCRETE COSINE TRANSFORM

这是一个实现基于小波变换的融合算法的源代码，对于研究图像融合的专家具有重要的参考价值(this is the image fusion sourcecode )

说明：  求出最小逼近的算法，帮同学写的直接就可以运行 (Find the lowest approximation algorithm, to help students write directly on the run)

可以用于预测的小波分解下的多元线性回归,对于径流预测有效(wavelet mlr)

pattern recognition , simple to find the pattren in input image

用于读取BVH文件,可以用来提取关键帧和分割(read BVH)

雷达信号处理基石 电子书,配套源码已经上传,book for Fundamentals of Radar Signal Processing source code, including GUI(book for Fundamentals of Radar Signal Processing source code, including GUI,source code has been upload.)

to find the discrete fourier transform using the fast fourier algorithm, any sequence of lengths which are multiples of 2 simply append zeros to satisfy this requirement

根据直扩原理，首先有随机数发生器产生一系列二进制信息数据（+1，-1），每个信息比特重复Lc次，Lc对应每个信息比特所包含的伪码片数，包含每一比特Lc次重复的序列与另一个随机数发生器产生的PN序列c(n)相乘。然后在该序列上叠加高斯白噪声和形式为i(n)=Acosw0n余弦干扰下次信号，切余弦干扰信号的振幅满足条件A<Lc。在解调器中进行与PN序列的互相关运算，并且将组成各信息比特的Lc个样本进行求和。加法器的输出送到判决器，将信号与门限值0进行比较，确定传送的数据为+1还是-1，计数器用来记录判决器的错判数目。(According to the principle, first some straight expansion random number generator produces a series of binary data (+ 1-1), each information bit repetitive Lc times, Lc for each information bit contains PN code piece count, embraces each bit Lc times repeated sequence and another random number generator produces PN sequence c (n) multiplication. Then in the sequence superimposed on gaussian white noise and forms as I (n) = Acosw0n cosine interference next time signal, cut cosine interfering signal amplitude satisfy conditions A < Lc. In the modem with the cross-correlation operation PN sequence, and the information will comprise the Lc a sample bits peace. The output of the adder judgment device, will signal to compare with threshold 0 data transmitted, determine for+ 1 or-1, counter is used to record the number victimised judgment. )

leach simulation in matlab