9527

In this paper, we investigate the timing and carrier frequency offset (CFO) synchronization problem in decode and forward cooperative systems operating over frequency selective channels. A training sequence which consists of one orthogonal frequency-division multiplexing (OFDM) block having a tile structure in the frequency domain is proposed to perform synchronization. Timing offsets are estimated using correlation-type algorithms. By inserting some null subcarriers in the proposed tile structure, we propose a computationally efficient subspace decomposition- based algorithm for CFO estimation. The issue of optimal tile length is studied both theoretically and through simulations. By judiciously designing the tile size of the pilot, the proposed algorithms are shown to have better performance, in terms of synchronization errors and bit error rate, than the time-division multiplexing-based training method and the computationally demanding space-alternating generalized expectation-maximization

说明：  pwm conver 逆变器 仿真模型matlab 好好学习(inverter pwm conver learn matlab simulation model)

说明：  在MATLAB下实现的KALMAN滤波，一个二维平面(In MATLAB to achieve the Kalman filter, a two-dimensional plane)

平凹腔激光模式计算程序，利用边界元方法计算，matlab编程！(concave cavity laser mode procedures, the use of the boundary element method, the Matlab programming!)

说明：  利用matlab gui制作的图片放大的软件。。(Produced using matlab gui image zoom software. .)

whatershed image processing

一维杆一端固定，一端受拉力，用3节点杆单元显式分析其动态响应(three-nodes bar element)

该程序初步实现了M序列的生成，并且详细地进行了频域法的系统辨识分析。(The program is the initial realization of the M-sequence generation, and detail the frequency domain method of system identification analysis.)

该代码是用matalb实现的八皇后源代码，具体功能：可以用鼠标操作，共64个格子，用鼠标点击其中一个方块，其对角线和同一行列的格子都会变成红色，将为不可点击的状态，其中还有定时程序，显示出实现八皇后所用的时间，若实现了就会停止计时，若没有将会一直计时。可以实现重新开游戏功能和退出游戏功能。(The code is matalb Queen' s source code to achieve the eight specific functions: You can use the mouse, a total of 64 grid, right click on a box, the diagonal and the same ranks of the grid will become red, will not Click the state in which there are regular procedures to achieve 8 shows the time used by the Queen, if realized would stop the clock, if not will always be time. Can achieve re-open the game out of the game features and functionality.)

some files for matlab