subband

SPWM产生器，带有谐波分析等功能，精度高，功能全(SPWM generator with harmonic analysis function, high accuracy, the functional)

说明：  初学者的良师益友，高手的真正体显。初学者的良师益友，高手的真正体显。(IT IS VERY GOOD.)

matlab环境下PLL经典例程，包含一阶和二阶锁相环。(matlab environment PLL classic routines, including a first-order and second-order phase-locked loop.)

guassian sobel filter for image processing

说明：  针对MATLAB的优化功能，本人特别整理了MATLAB常用的优化工具箱代码(MATLAB function for optimization, I used the special finishing of the optimization toolbox of MATLAB code)

These codes generate simulation results depicted in the paper titled J. Chen, H. Yin, L. Cottatellucci, and D. Gesbert, "Dual-regularized Feedback and Precoding for D2D Assisted MIMO Systems", IEEE Trans. Wireless Commun., 2017. Author: Junting CHEN Email: juntingc@usc.edu Date: May 20, 2016

The code introduces postcoding technique in ofdm system that results in a much less complex mechanism and provide similar result as are obtained with precoded system. In this technique the coding part is done after the ifft block that is initially the data is converted to frequency domain n then coding is introduced.

说明：  三次B样曲线的绘制,用TURBO C 完成(cubic B-spline curve rendering, complete with Turbo C.)

一堆沙子的横截面，可以使用 Margolus 型邻居仿真，但运动规则不同。 规则： 元胞有 2 个状态。状态= 0 是空的，状态= 1 代表沙子。 在任何时间步长，一个粒子，可以在2x2 块中向着底部运动。可能运动如下 所示。墙壁和底部将阻止粒子继续运动。 为了让该运动略有随机性，我亦补充说一项规则，有时处于下落状态的两个元胞还旋转，直到所有的动作都完成。(Cross-section of a pile of sand, you can type using the Margolus neighborhood simulation, but the movement rules are different. Rules: There are two cellular states. State = 0 is empty, state = 1 for sand. At any time step, a particle can be in the 2x2 block toward the bottom of the movement. May exercise the following. Walls and bottom to prevent the particles continue to campaign. To make the campaign a little random, I also added a rule, sometimes in the falling state of the two cell also rotate until all actions are completed.)

编制以M序列为输入时，脉冲响应的相关分析算法并检验。(The preparation of the M sequence as input, the impulse response of the correlation analysis algorithm and test.)