piubiu_V1.5

MPEG coding, signal processing, compression

给水管网优化课本中的例题。计算井水管网的汇水管的水头损失。并且有图。(calculate the head lost of pipe net .)

四元数姿态解算程序，很适合初学者。。。。。。。。。。(compute )

系统辨识的模型阶次辨识，其中包括Hankel矩阵法，残差法，行列式法(System identification of model order identification, including Hankel matrix method, residual method, the determinant method)

ofdm dechewngxu ofdm 的程序(ofdm dechewngxu ofdm program)

实现在网页上利用matlab画图,实现在网页上利用matlab画图(On a web page using matlab drawing)

一个OFDM符号128个有效符号，插入128个虚拟子载波 符号率（即有效数据率）fsymbol，而发送速率（需要包括虚拟子载波）2fsymbol 输入的数据需要2倍的发送数据率，以便进行内插，实现位定时跟踪，即4倍fsymbol采样率的调制信号 OFDM symbol Nfft=128 points 一个OFDM符号数据点 Nfft*2 = 256 ， Guard Interval点 ＝Ng*2=64 (128 of an OFDM symbol of a valid symbol 128 inserted virtual sub-carrier Symbol rate (the effective data rate) fsymbol sending rate (including virtual subcarriers) 2fsymbol Of the input data needs to be 2 times the transmission data rate, in order to carry out the interpolation, to achieve the bit timing tracking, i.e. four times the sampling rate modulation signal fsymbol OFDM symbol Nfft = 128 points One OFDM symbol data points nfft* 2 = 256, the Guard Interval dot = Ng* 2 = 64)

生物地理学优化算法，包含基本算法及其与差分优化算法相结合的算法(Biogeography optimization algorithm and its improvement)

主成分分析法（pca）在matlab上的实现(pca in matlab)

霍夫曼信源编码，针对一串数据 进行霍夫曼压缩 得到霍夫曼树(Huffman coding)