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[OS program] 数字水印 DL : 0: 对原始信号做DCT的算法：Cox 和Piva 等人提出的DCT技术的经典之作。Cox利用随机数发生器产生标准正态序列作为水印信息对图像进行整体DCT变换后，选取除去DC系数之外部分较低频率系数叠加水印信息 Piva则修改整幅图像的中频部分。对原始信号分块后，再作DCT的算法：Hsu和Wu 把图像进行8*8分块，将一个二进制序列作为水印放入DCT的中频区；有些学者则计算整个图像的DCT，把一个实数序列嵌入DCT的中频系数上。选择中频区的好处是一方面尽量减少嵌入信息对图像主观视觉的影响；同时，尽量避免有损压缩对水印信息可能带来的损失。还有一种DCT方法就是把水印信息嵌入到高频系数上，但是采用这种方法，抗压缩性非常差。-done to the original signal DCT algorithm : Cox Piva and others made the DCT technology classic. Cox using random number generator producing standard normal sequence information as a watermark image of the overall DCT, DC coefficient selection removed outside some lower frequency coefficient superposition watermark information Piva will be replaced by images of the entire IF part. The original signal block, before making the DCT algorithm : Wu Hsu and put images 8* 8 block, a binary sequence as watermarks Add DCT IF; Some scholars calculated whole image of DCT, a real sequence embedded IF DCT coefficients. IF the choice is a good one to minimize the embedded information to the subjective visual images; Meanwhile, try to avoid Compression right watermark information possible losses. There
Date : Size : 33kb User : 圣子到
[matlab] watermark小波代码 DL : 0: 这是基于小波变换的数字水印代码，在嵌入的水印加上一个pn尾随机序列-This is based on the wavelet transform digital watermark code, the embedded watermark with a random sequence late pn
Date : Size : 216kb User : 符号
[matlab] PN码产生1 DL : 0: MATLAB的源程序,包括产生随机传输数据data的子程序,eject_seq发射序列子程序,BPSK调制序列产生子程序,产生pn1序列的子程序,利用积分法实现BPSK解调,均衡pn1序列的子程序.-MATLAB source, including random data transmission of data subroutine, eject_seq launch sequence subroutine, BPSK modulation sequence generated subroutine, have Promoters sequence subroutine, use integral method to achieve BPSK demodulation, balanced Promoters sequence subroutine.
Date : Size : 3kb User : 李力
[matlab] 对具有随机噪声的二阶系统的模型辨识 DL : 0: matlab在系统辨识中的应用此处为对具有随机噪声的二阶系统的应用的源代码及运行后结果（包括图像）-Matlab system identification in the application is right here for the second random noise of the system source code and running after the results (including images)
Date : Size : 19kb User : 于瑞
[matlab] kalman 滤波器的实现与应用 DL : 0: 利用kalman滤波器对具有随机加速度的物体运动路线的进行信号采样，滤波处理和估计。-use kalman filter to sample signals of object moving route with random acceleration,filter and estimate
Date : Size : 14kb User :
[matlab] ARMODEL DL : 0: 功率谱估计的应用范围很广，在各学科和应用领域中受到了极大的重视。在《现代信号处理》课程中讲述了经典谱估计和现代谱估计这两大类谱估计方法；经典谱估计是基于傅立叶变换的，虽然具有运算效率高的优点，但是频谱分辨率低同时旁瓣泄漏严重，对长序列有着良好的估计。为了克服经典谱估计的缺点，人们开展了对现代谱估计方法的研究。现代谱估计是以随机过程的参数模型为基础的，有最大似然估计法、最大熵法、AR模型法、预测滤波器法。现代谱估计对短序列的估计精度高，同经典谱估计互为补充。在认真学习了现代谱估计方法后，我选择了现代谱估计中的AR模型法的仿真作为题目。下面给出AR模型的相关理论和仿真实现。-Power Spectral Estimation of very extensive, in all disciplines and fields of application of a great deal of attention. The "modern signal processing" on the curriculum of classical and modern spectral estimation spectrum is estimated that the two types of spectrum estimation method; Classical spectrum estimation is based on Fourier transform, although high computing efficiency advantages, but also low-resolution spectrum Sidelobe serious leakage of long sequences have good estimates. In order to overcome the classic shortcomings of the spectrum estimation, there have been a pair of modern spectral estimation methods. Modern spectral estimation is the random process model parameters based on the maximum likelihood estimation, maximum entropy method, AR model, forecast filter. Spe
Date : Size : 2kb User :
[matlab] LMS by adian try DL : 0: 本程序用matlab工具编程,采用lms算法实现信道估计.其中信源是+-1二值随机码,信道为多径(3路径)信道.-the procedures used Matlab programming tools using LMS algorithm channel estimation. Which source is-1 two random codes, channel more Drive (Route 3) channel.
Date : Size : 1kb User : 樊点桦
[matlab] 随机信号功率谱分析 DL : 0: 理解随机信号功率谱分析原理和方法。 (1) 生成信号，被淹没在在噪声中； (2) 试用周期图法估计信号的功率谱； (3) 选用不同窗，使用修正周期图法估计信号的功率谱； (4) 对一段语音信号，使用LD算法估计其功率谱； (5) 详细列出功率谱估计的步骤和原理。 -understanding of random signal power spectrum analysis principles and methods. (1) generate signals being drowned in the noise; (2) The probationary period plan estimates the signal power spectrum; (3), different windows, the use of map amendment cycle method to estimate the power spectrum signal; (4) a voice signal, the use of LD algorithm to estimate the gong spectrum; (5) a detailed breakdown of the power spectrum estimation steps and principle.
Date : Size : 37kb User : 殷开
[Internet-Network] jsac DL : 0: 用Matlab产生随机拓扑图，优化并显示结果。-Matlab random topology map, optimization and display results.
Date : Size : 18kb User : 杨
[Internet-Network] commmag DL : 0: 产生随机的网络拓扑（包括节点位置及流量），然后产生所有可能的进度表并计算其可达到的速率。另外，也可用更为精确的物理层模型来进行速率计算。-random network topology (including the location and flow nodes), and then have all the possible schedule and calculate the rate can be achieved. Besides, it also can be used for more accurate model of the physical layer for rate calculation.
Date : Size : 26kb User : 杨
[AI-NN-PR] 我编写的monte carlo随机数发生器 DL : 0: 这是我在matlab环境下编写的产生随机数的源程序，包括产生均匀分布和正态分布，参数接口十分灵活。-in Matlab environment prepared by the random numbers generated by the source code, including the Uniform Distribution and normal distribution, parameter interface is very flexible.
Date : Size : 2kb User : 存友
[AI-NN-PR] 我编写的monte carlo随机数发生器检验程序 DL : 0: 该程序用来检验monte carlo随机数的分布是否满足随机性要求。包括独立性检验、均匀性检验和参数检验。-procedures used to test the Monte Carlo random number distribution to satisfy the requirements randomness. Including the independence test, uniform test parameters and test.
Date : Size : 3kb User : 存友
[Program doc] RS编码器软件 DL : 0: 本程序仿真做出了一个RS编码器。运行本软件，可得到一个可视化界面，按界面提示随意输入信息序列，即可对其进行RS编码。一般的RAR解压即可-made an RS encoder. Running the software, will be a visual interface, interface suggested by the random input sequences can be encoded its RS. General RAR can extract
Date : Size : 80kb User : 郭俊奇
[Speech/Voice recognition/combine] traditionalsp DL : 0: 语音信号的频域处理,语音虽然是一个时变、非平稳的随机过程。但在短时间内可近似看作是平稳的。因此如果能从带噪语音的短时谱中估计出“纯净”语音的短时谱，即可达到语音增强的目的。由于噪声也是随机过程，因此这种估计只能建立在统计模型基础上。利用人耳感知对语音频谱分量的相位不敏感的特性，这类语音增强算法主要针对短时谱的幅度估计。 -voice signals in the frequency domain processing, voice is a time-varying, nonstationary random process. But in a short period of time can be approximated as smooth. So if Noisy Speech from the short-term spectrum estimate "pure" voice of the short-term spectrum, and reached speech enhancement purposes. As the noise is random process, which can only be estimated based on statistical models based on. Use ear perception of voice spectrum component of the phase sensitive to the characteristics of such speech enhancement algorithms targeted at the rate of short-term spectral estimation.
Date : Size : 1kb User : 罗飞
[Internet-Network] 网络仿真-0.5持续CSMA DL : 1: p-持续CSMA协议下，一个用户在发送之前，先侦听信道，若是空闲，就以概率p发送出去，而以q =1-p的概率推迟到下一帧时。如果下一帧时仍是空闲，便再次以概率p发送而以q推迟到再下一帧时。直到发送成功或另外一用户开始发送时为止。若一开始就侦听到信道忙，它就等到下一帧时，然后再开始上述过程。若发生冲突，这等待一随机时间后重新开始。本实验中取q值为0.5。求的是0.5-持续CSMA。 -p-persistent CSMA agreement, a user before sending the first interception channel, if idle, with probability p sent, and to q = 1-p probability postponed to the next frames. If the next frame was still idle, they again sent with probability p and q to further postponed to the next frames. Until this a success or other users at the beginning of this date. If an interception at the start of the busy channel, it will wait till the next frames, and then begin the process. If conflict breaks out, waiting for a random period of time after the re-start. The experiments take q value of 0.5. For the 0.5-sustained CSMA.
Date : Size : 54kb User : fang
[matlab] TFBSSpack DL : 0: 一个使用空间时频分布进行盲信号分离的Matlab程序，可以实现高信噪比下的随机信号分离-the use of space at a frequency distribution for the Blind Signal Separation Matlab procedures can achieve a high SNR of random signal separation
Date : Size : 24kb User : 赵力
[matlab] bch DL : 1: BCH 编解码的MATLAB 实现。BCH码是一类重要而有效的纠正多个随机错误的循环码，由于该码具有严格的代数结构，所以是到目前为止研究得最为详尽、应用最为广泛的一类码，已有多种译码算法。-BCH codec of MATLAB. BCH is a kind of important and effective redress the wrong number of random cyclic code, as the code strictly algebraic structure, it is so far the most detailed study in, the most widely used type of a code has a variety of decoding algorithm.
Date : Size : 3kb User : zfs
[Communication] rch_acc_25 DL : 0: hiperlan协议中mac接入仿真，one proposed way for random RCH number-hiperlan agreement mac access simulation, one proposed way for random number RCH
Date : Size : 4kb User : mac
[matlab] 随机过程时间序列的分析 DL : 1: 是随机过程中时间序列分析作业，基于Matlab编程实现模型判别，参数求取，模型预测等，另附有本人作业全文，供大家参考。-random process is time-series analysis of operations, based on the Matlab programming model checker, parameters strike, model projections, followed by my work, for your reference.
Date : Size : 51kb User : 雅丫
[matlab] QPSK_TX DL : 0: 采用伪随机码对OPSK发射机进行性能仿真-pseudo-random code of conduct OPSKmodulating and demodulating Transmitter Performance Simulation
Date : Size : 2kb User : 王蓬

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