二维FDTD仿真

We formulate a scheduling problem that takes into account different hardware delays experienced by the secondary users (SUs) in a centralized cognitive radio network (CRN) while switching to different frequency bands. We propose a polynomial-time suboptimal algorithm to address our formulated scheduling problem. We evaluate the impact of varying switching delay, number of frequencies, and number of SUs. Our simulation results indicate that our proposed algorithm is robust to changes in the hardware spectrum switching delay and its performance is very close to its upper bound. We also compare our proposed method with the corresponding constant switching delay-based algorithm and demonstrate that our suggestion of taking into account the different hardware delays while switching to different frequency bands is essential for scheduling in CRNs.

《数字信号处理》（程佩青第３版）课后上机实验的程序(" Digital Signal Processing" (Cheng Peiqing version 3) experiment on the computer after school program)

说明：  确定图像中的圆形目标，并标示出来。版本R2008B以上(Determine the image of the circular target, and marked. Version of the above R2008B)

实现FFT频谱分析，IIR数字滤波器的设计（多种方法），FIR数字滤波器的设计(Implement FFT spectrum analysis, IIR digital filter design (many ways), FIR digital filter design)

Objectives: The main objectives of this project: 1. Enhancement using spatial domain approach. 2. Effects of filter size, noise type and level, and repeated application. 3. Performance of Image Averaging Technique.

室内无线定位技术，基于RSA算法的matlab仿真程序(Indoor wireless positioning technology, based on the RSA algorithm matlab simulation program)

cor(r)生成半径为r的极坐标矩阵，矩阵大小为（2r+1）*（2r+1）(COR (r) generating matrix of the polar coordinates whose radius is r , the matrix size (2r+1)* (2r+1))

matlab编的人工鱼群算法程序，已经编译通过，非常优秀的算法，希望大家改进应用到实践中去(matlab code of the artificial fish school algorithm procedure has been compiled by a very good algorithm, I hope we improve the application in practice)

说明：  遗传算法MALAB程序包，包括适应度、计算、选择交叉、变异等子程序(GA MALAB package, including fitness, calculation, select crossover and mutation subroutine)

方便观察并行运算采用parfor（并行循环）时的运算进程，一个简化版的进度条，比具有GUI的进度节省不少珍贵的电脑资源。本程序根据网上parfor_progress的源程序改编而，但显示到小数点后2为的精确进度情况，比网上的灵敏度更高。(It convenience for us to observe the operation process when we use Parallel Algorithmic parfor(paralle circulation)to compute,a simplify progress bar.But saving more precious computer resource for you than GUI PROGRESS BAR. And this program is rewrite by the source program of parfor_progress in the network, more precision than the web program, advanced dispaying two digits after the decimal point. This is his advantages.Thanks!)