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认知无线电中频谱共享的方法。是基于动态频谱租用的，运用了博弈论的原理。(Hierarchical dynamic spectrum access (DSA) has received the most attention in recent years as the solution for better spectrum utilization. In this paper, on the other hand, we develop a framework for dynamic spectrum leasing (DSL). Power control in hierarchical DSA networks only involves that of controlling secondary user transmissions. Thus, in game theoretic formulations of power control in cognitive DSA networks only secondary users are considered as players of the game. In proposed dynamic spectrum leasing, on the other hand, the primary users are rewarded for allowing secondary users to operate in their licensed spectrum. Thus, in the proposed DSL networks the primary users have an incentive to allow secondary users to access the spectrum whenever possible to the maximum extent. We develop a game theoretic framework for such dynamic spectrum leasing in which primary users actively participate in a non-cooperative game with secondary users by selecting an interfere)

说明：  一种OFDM的系统实现，这是一个较新的实现方法。请各位高手指点！(an OFDM System, which is a relatively new method. Please master guiding you!)

三种动态信道分配算法的比较，一种为随机分配算法，另外两种用于认知无线电领域，一种为从资源角度出发的RP算法，一种是从需求角度出发的DP算法。(Three dynamic channel allocation algorithm for comparison, a random allocation algorithm, the other two areas for cognitive radio, a perspective from the resources of the RP algorithm, one is from the demand point of view of the DP algorithm.)

three phase system with sinosoidal inverter .check it with source code

一种解决p3p问题的matlab&C代码，计算绝对的姿势[ R ]四解决方案，一个相机三3D到2D的对应使用(Compute the four solutions for the absolute pose [R,C] of a camera using three 3D-to-2D correspondences)

该文件主要介绍如何应用matlab对控制系统进行数学描述与建模(This document describes how to use the control system matlab mathematical description and modeling)

说明：  人脸识别 人脸图像特征提取与对比 pca(Face image feature extraction and comparison, image recognition, principal component analysis)

某石油公司计划建造一条由东向西的主输油管道。该管道要穿过一个有n 口油井的油田。从每口油井都要有一条输油管道沿最短路经(或南或北)与主管道相连。如果给定n 口油井的位置,即它们的x 坐标（东西向）和y 坐标（南北向）,应如何确定主管道的最优位置, 即使各油井到主管道之间的输油管道长度总和最小的位置?证明可在线性时间内确定主管道的最优位置。(An oil company plans to construct a east to west from the main pipeline. The pipeline to pass through an oil field n wells. Wells from each must have a pipeline along the shortest path (or South or North) connected with the competent Road. If given the location of oil wells in n, that is, their x coordinates (east-west) and y coordinates (north-south), should be how to determine the optimal position in charge of Road, even if the wells to the pipeline in charge of Road between the sum of the smallest length location? proved to be linear time to determine the optimal position in charge of Road.)

说明：  Matlab编写的人工势场法避障程序，如何躲避点状障碍(Written in Matlab artificial potential field obstacle avoidance procedures, how to avoid point-shaped obstacles)

introducation to adaptive filter