哈达玛变换

该文分析了辅同步信道的结构，根据其构造特性提出了部分快速哈达玛变换（PFHT）的快速算法。理论分析证明该算法减少了接近70%的运算量。

This paper proposes Partial Fast Hadamard Transform ( PFHT ) according to the S-SCH structural property , which extremely reduces the computing complexity to almost 70 % .

提高芯片毛细管电泳系统检测信噪比的哈达玛变换法

Enhancement of Signal-to-Noise Ratio in Chip-based Capillary Electrophoresis Systems by a Hadamard Transform Approach

本文详细分析辅助同步码序号识别算法，在此基础上提出了一种基于快速哈达玛变换的FPGA实现方案。

Based on the analysis on algorithm for SSC sequence number identification , an FPGA implementation scheme using fast Hardarm transform are presented .

沃尔什&哈达玛变换（WHT）系数偶数性的理论、应用与实现

Parity of the coefficients of a wht & theory , application and Realization

然后将脆弱水印嵌入到哈达玛变换域的直流分量中。

Then the fragile watermark is embedded into the Hadamard transform domain in the DC component .

根据大量图像的哈达玛变换系数的统计性质，设计了系数的编码表，使它较好地满足图像恢复时的质量要求。

According to a large number of image based on the statistical properties of hadamard transform coefficients , coefficient coding table is designed to make it better meet the quality requirements of the image recover .

方案通过哈达玛变换和交织实现导频插入，使得导频部分与数据部分即使在多径信道中也无相互间的串扰，从而便于用简便的方法获得准确的信道参数估计。

The new method , which is based on Hadamard transform and interleaver , can eliminate cross interference between pilot and data part in severe multipath environment , and can achieve accurate channel parameters easily .

此外，本文介绍了X线信号采集的不同方法及具体实现，讨论了图像变换技术在医学图像处理中的作用，具体分析了拉普拉斯变换，离散余弦变换，哈达玛变换及小波变换等。

This article introduced X signal gathering different method and the concrete realization , discussed the picture inversion technology in the medicine picture processing function , specifically analyzed the Laplace-transformation , the separate cosine transformation , Hada Masurium transformation and the wavelet transformation .

在帧内采用离散余弦变换、哈弗曼编码、行程编码和位平面编码等方法，同时为了做相应的对比还采用了离散傅里叶变换、沃尔什-哈达玛变换与香农-费诺编码等方法。

It uses method of intraframe compression , for example , huffman coding , run length encoding and bit-plane coding method . Meanwhile , in order to do comparison , it also uses the discrete Fourier encoding , Walsh Hadamard encoding and Shannon-Fenno coding .

本文在仔细分析原有相关算法优缺点的基础上，提出了三种基于变换域数字水印算法。1.提出了一种基于哈达玛变换的脆弱水印算法。

Based on analysis of the advantages and disadvantages of classical methods , three kinds of image watermark algorithm based on transform domain are proposed , which are detail as follow : 1 . A fragile watermarking algorithm based on hadamard transform is proposed .

利用m序列矩阵和哈达玛矩阵的变换关系，提出基于哈达玛变换的SSS检测算法。

By use of M sequence matrix and the Hadamard matrix transformation relation , a Hadamard based SSS detection algorithm is proposed .