lunwenfig3_10a

generation of wideband and high dynamic range analog signal for area-efficient MADBIST, especially for the on-chip testing of wireless communication IF digitizing sigma–delta modulator chip. Via increasing the order of the one-bit bandpass sigma–delta modulation algorithm up to 12 and using finite repetitious bitstream approximating scheme, it can achieve great improvements in signal bandwidth instead of purity at the cost of very little hardware overhead. Another contribution in this work is to provide the theoretical analysis of the reconstructed signal degradation due to harmonic distortion and clock jitter. Such on-chip analog stimulus generation scheme is especially fit for IF digitizing bandpass sigma–delta modulator chip s production-time testing and in-the-field diagnostics. The technique can also be extended to mixed-signal communication SoC built-in-self-test.

在matlab下时间序列分析ARMA模型的建立和预测程序ARMA(Under the matlab time series analysis and forecasting ARMA model procedures for ARMA)

说明：  此程序用来瑞利衰落信道仿真,用于无线环境，希望能有所帮助(This procedure used to Rayleigh fading channel simulation, used in wireless environment, hoping to be helpful)

说明：  利用最小二乘法求解超定方程的矩阵解法，用matlab编写。(The least square method for solving overdetermined matrix equation solution, prepared with matlab)

FOR HELP AND DOCUMENT FOR POWER cvd ffg

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.

基于MATLAB对两种三角化算法的分析 基于MATLAB对两种三角化算法的分析(MATLAB based on the analysis of two kinds of triangulation algorithmsMATLAB based on the analysis of two kinds of triangulation algorithms)

(MATLAB) On the companion website, you will find in the directory Chap exercises/chapter3 a workspace ex3M2.mat. In this workspace, you will find waveforms of the words “we” and “be” (at 10000 samples/s) in the array we be 10k. The waveforms and a spectrogram of the waveforms are shownin Figure 3.33. To display the spectrogram andwaveform, use the function specgram ex3p19.m also in Chap exercises/chapter3. To listen to the waveform, use the MATLAB function sound.m.

对于一个随机的非高斯信号或者一个确定信号有很多的信息（远不止功率谱...）。本工具用来分析高阶谱和时频分布。(For a random signal or a set of non-Gaussian signals have a lot of information (far more than the power spectrum ...)。 This tool is used to analyze higher-order spectra and time-frequency distribution.)

基于最小风险的贝叶斯分类器，用于数字分类识别(Bayesian minimum risk classification for digital classification)