bp339

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

This method will try to extract the centre lines of the veins. This is done by calculating local maximum curvatures in cross-sectional profiles of a vein image. The method is supposed to be robust against varying vein widths and non-uniform brightness.

无线传感器网络定位技术中可以用卡尔曼滤波来改善定位精度(the Kalman filter can be used to improve the positioning accuracy of location in wireless sensor networks )

该教程为MATLAB基础及其应用教程，介绍MATLAB的各种命令和函数(The tutorial is based on MATLAB and its application tutorial introduces various commands and functions of MATLAB)

3D的多孔材料的生成，使用了随机生长的远胞自动机模型(Generate 3D porous material, the use of random growth far Cellular Automata Model)

永磁同步电机的直接转矩控制matlab/simulink模型，可用。效果不错。(matlab/simulink model of PMSM DTC method。)

说明：  永磁同步电机矢量控制，其中包括仿真电机的参数和具体的数据，适合于中惯量电机高精度控制。(PMSM vector control, including the simulation of the electrical parameters and specific data. for inertia at the high precision motor control.)

insertion of two images iand how to exctract them

在网上找到的代码 在网上那个找到的系统辨识与自适应控制程序 大家分享(Online to find the code online that found in the system identification and adaptive control procedures to share)

改程序包可以进行字旋转链和量子寄存器建模等。(this program package helps modeling spin chains, qubit registers, etc. according to nonrelativistic quantum mechanics and some novel ideas from quantum information theory.)