ldpc-decode

FDTD thuậ t toan de giai phuong trinh vi phan dao ham rieng bang phuong phap

首先分析了瑞利衰落信道统计特性，并在此基础上给出了clarke模型，然后提出仿真方法，包括成形滤波法、jakes仿真模型及其多种改进方法，接着阐述了上述仿真模型的软件实现过程，并利用matlab进行了计算机仿真，然后给出衰落信号的仿真信号和分析结果，仿真结果证明了提出的仿真模型与理论曲线匹配度高，可以很好地模拟无线衰落信道(First analyze the statistical properties of the Rayleigh fading channel, and clarke model is given on this basis, and then asked the simulation methods, including the forming of the filter method, the the jakes simulation model and a variety of improvement, then described the simulation model of the software implementationprocess, and using matlab computer simulation, and then gives the simulated signals and analysis results of the fading signals, simulation results show the proposed simulation model with the theoretical curve to match high, can simulate the wireless fading channel)

Record your voice for 5 seconds Play back the recording Store data in double-precision array Plot the waveform Calculate over all the frames in the sample LPF the speech at 900 Hz to remove upper freq. (since Pitch info. will be below 900 Hz) Perform Centre Clipping and find the Clipping Level (CL) Choose the appropriate clipping level Perform Center clipping Compute the autocorrelation calcute pitch Calculate the avg. pitch estimate for the whole sample X. Find Gender

矢量控制系统中的PI调节器，此为磁链调节器(PI regulator vector control system, this flux regulator)

读取激光雷达数据并计算消光系数廓线，作图(read lidar data and get extinction coefficient profile and figure)

针对离散系统进行开环、闭环分析；绘制Bode、Nyquist、根轨迹图；阶跃、脉冲响应，并均给出响应的图示。(For the discrete system closed loop analysis of ring, open drawing Bode, Nyquist, root locus diagram step, impulse response, and the response of the diagrams are given.)

地震波转化为设计反应谱，可以快速将地震波加速度时程数据转化为设计反应谱(from earthquakewave to design spretrum)

线性调频脉冲压缩过程中所有仿真结果和代码(Chirp compression process simulation and code all)

function [A,w,type,tao]=amplres(h) 《数字信号处理教程——MATLAB释义与实现》子程序 给定FIR滤波器系数求滤波器符幅特性(function [A, w, type, tao] = amplres (h) " digital signal processing tutorial- MATLAB Interpretation and Implementation" procedure FIR filter coefficients of a given symbol rate filter characteristics of demand)

用LSB算法做图片隐藏，提取及检测，适合初学者学习参考(LSB algorithm to do image extraction and detection of hidden)