13-suijishengchegnshu

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：  跳频参数估计论文，主要是通过各种时频分析方法进行处理(The hopping parameter estimates thesis, mainly handled by a variety of time-frequency analysis methods)

很多情况下不能直接将目标函数作为适应值函数，此时需要对目标函数进行标定。(In many cases the objective function can not be directly used as fitness function, then the objective function needs to be calibrated.)

这个是我数字信号处理这门课的课程设计,文件包括用matlab编写的代码和设计报告.这个设计包括卷积演示程序、采样定理演示程序、模拟滤波器设计演示程序、设计切比雪夫I型低通滤波器、切比雪夫I型低通滤波器、双线性变换法设计巴特沃斯低通数字滤波器、用凯塞窗设计高通滤波器.(This is my curriculum design of digital signal processing of this course, the file including the use of matlab code and design report. This design includes convolutional demo program, sampling theorem demo, analog filter design demo program, design of Chebyshev type I low pass filter, Chebyshev type I low pass filter, bilinear transform design Butterworth low pass digital filter, high pass filter design with Kaiser window.)

利用分步傅里叶方法对光线传输长度对脉冲波形的影响进行比较(Step-by-step method using the Fourier transfer of the light pulse length on the impact of comparison)

说明：  经典的同步算法，即最大似然同步算法，对于开发3G系统很有效( a good synchronization program named as ML(the maximum likelihood method),it is useful for you to develop the 3G system.)

用于图像质量评价的ssim程序，用以对图像的质量进行客观评价，评价结果更接近主观感受(Ssim for image quality assessment procedures for an objective image quality evaluation, evaluation results are closer to the subjective feelings)

以前下载的一些用matlab编写的关于运动轮廓模型程序(Previously downloaded some prepared using matlab contour model on the campaign process)

modified NSGA-II with sale and repair

ID3算法的matlab实现，包含了具体的软件界面的设计(ID3 algorithm matlab, contains a specific software design below)