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GNSS sDR application about GPS to use people

学校电子设计竞赛时做的一个小DDS系统,功能较全,基于DSPBuilder,在MatLab R2009b中仿真通过(Electronic Design Competition when schools do a small DDS system function than the whole, based on DSPBuilder, in the simulation in MatLab R2009b by)

层析分析法的一个简明程序，方便的求出最大特征值以及w0 wi。希望能帮助大家(Chromatography analysis of a simple procedure, easily find the largest eigenvalue, and w0 wi. Hope to help you)

功放预失真模型，基于数字预失真的功放模型设计(Predistortion power amplifier model, based on the model of digital pre-distortion power amplifier design)

用七元线形天线阵（ULA） 已知：信号中心波长为2,天线阵元的间距为1米,快拍数为2000，空中有四个 源信号,假设它们的频率：0.015, 0.05, 0.02, 0.035 四个源信号的方向分别为：pi/4 pi/3 pi/6 3pi/4 求： 1）在不加入噪声的情况下,画出传统波束形成法、Bartlett波束 形成法、Capon波束形成法的空间谱图； 2）在加入高斯白噪声的情况下,假设信噪比为10dB，画出传统波束 形成法、Bartlett波束形成法、Capon波束形成法的空间谱图。(7-element linear antenna array (ULA) Known: the signal center wavelength is 2, the antenna element spacing of 1 m, the number of snapshots for 2000, the air there are four Source signal, assuming that their frequency: 0.015, 0.05, 0.02, 0.035 The direction of the four source signals: pi/4 pi/3 pi/6 3pi/4 Requirements: 1) not to join the noise, to draw the traditional beam-forming method, Bartlett, beam Formation method, Capon beamforming method of the space spectrum 2) by adding Gaussian white noise, assuming that the SNR is 10dB, to draw the traditional beam Formation method, Bartlett, beamforming, Capon beamforming method of the space spectrum.)

this is an implementation of ldpc encoder and decoder in matlab. generator matrix, parity check matrix and the chennel are implemented seperately. the bit error rate performance is estimated for the ldpc code

用MATLAB编写的混沌序列图像加密程序，密钥可以从0到1之间的任何一个数(MATLAB prepared by the chaotic sequence image encryption program, the key can be any number 0 to 1)

实现了31位m序列，并采用相关解扩,有传统和倒置两种方法(31 m sequence )

实现边界正择性测量，可在MATLAB环境下运行(the border is optional measurement, in the MATLAB environment running)

王燕编写的《应用时间序列分析》的PPT、程序和数据(the PPT/SAS code/dataset for <time series> by wangyan)