Adaptive

Matlab source code for DCT-based watermarking for grayscale images. DCT-based watermark recovering without resorting to the uncorrupted original image. Digital watermarking has been proposed as a viable solution to the need of copyright protection and authentication of multimedia data in a networked environment, since it makes possible to identify the author, owner, distributor or authorized consumer of a document. A new watermarking technique to add a code to digital images is presented: the method operates in the frequency domain embedding a pseudo-random sequence of real numbers in a selected set of DCT coefficients. Watermark casting is performed by exploiting the masking characteristics of the Human Visual System, to ensure watermark invisibility. The embedded sequence is extracted without resorting to the original image, so that the proposed technique represents a major improvement to methods relying on the comparison between the watermarked and original images.

仿真计算出（15, 11)系统循环码和(15, 5)系统循环码两种码字在BSC信道下的误码率性能曲线(Simulation of the (15, 11) cyclic code and the system (15, 5) cyclic code system of two code words in the BSC channel BER performance curve)

阻尼震动.用matlab编写.需要的下载(vibration damping. Prepared using Matlab. Need to download)

3理论抽样信号从一个联盟的子空间,理论抽样信号从一个联盟的子空间(3A theory for sampling signals from a union of subspaces)

QPSK modulation with awgn channel

微波啁啾延迟线设计程序。压缩包中，Chirp_z.m为计算等效电路中的阻抗分布。W_h.m为等效线宽的分布。结合相关的三维设计软件，可以设计出具有线性群时延特性的延迟线。(Microwave chirped delay line design program. Compressed packages, Chirp_z.m distribution for computing the impedance of the equivalent circuit. W_h.m equivalent linewidth distribution. 3D design software, you can design a linear group delay characteristics of the delay line.)

this matlab code is for channel estimation. when the communication channel is time varying for correct detection of received information you should stimate the communication channel.

用matlab实现了2dpca算法，基于ORL人脸数据库，识别率较高(Matlab achieved with 2dpca algorithm, based on the ORL face database, the higher recognition rate)

该算法是通过统计图像信息熵大小来评价的图像的清晰度。清晰的图像的熵大于模糊图像的熵。(The algorithm is the image through the statistical entropy to evaluate the size of the image definition. Clear image of the entropy of fuzzy image entropy.)

非常有名的捕食者算法Matlab+C 可进行目标定位(Very well-known predator algorithms Matlab+C)