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Description: 把地理区域分成一个个小区，蜂窝系统在该区域内提供无线覆盖。把可用的频谱分成很多信道，每个小区分配一组信道。使用频分双工（FDD）。在小区间进行频率利用，N个小区构成一个簇，簇间进行频率复用。定义了传播特性（信道参数）以及同频小区的位置。信道的参数包括：小区半径，路径损耗指数，以分贝为单位的对数正态阴影的标准差，基站发射功率级，移动台发射功率级，每个小区的扇区数，扇区化天线的正反向比，要仿真的瞬时位置的组数，同频干扰阈值。-To a geographical area is divided into small areas, cellular systems in the region to provide wireless coverage. The available spectrum is divided into multi-channel, each plot the distribution of a group of channels. The use of frequency division duplex (FDD). In the district between the frequency of use, N plots constitute a cluster, cluster between frequency reuse. The definition of the propagation characteristics (channel parameters), as well as with the frequency of residential location. Channel parameters include: cell radius, path loss index to decibels for units Lognormal shadow of the standard deviation, the base station transmitter power level, mobile station transmitting power level, the number of sectors in each district, sector of the antenna the pros and cons to the ratio, to the transient simulation of the group a few positions, the same frequency interference threshold.
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Author: mame |
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Description: 本例用matlab解决了数学建模中飞机精确定位问题。使用了优化函数‘constr’解决。（请在matlab 6.5以下运行）-Using matlab to solve this case, the mathematical modeling of precise positioning of the aircraft. The use of optimized function ' constr' solution. (Please run the following in matlab 6.5)
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Author: kevin |
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Description: 本文设计基于DCT的人脸识别系统，首先结合当今人脸识别的背景和发展状况讨论了人脸识别的研究内容及在各方面的应用；然后研究了人脸识别进行预处理，讨论了人脸识别预处理的其他方法，分析各种方法的利弊，最后采用DCT（离散余弦变换）实现人脸图像预处理中的降维处理；接下来对人脸图像的特征提取进行了研究，简单叙述了几何特征提取和代数特征提取，同时深入研究了基于DCT和PCA变换的人脸图像特征提取，从而实现是否对人脸识别系统识别率有所提高的研究；对于分类器的选择，本文对两种分类器进行了探讨，即最近邻分类器和BP神经网络分类器，同时采用BP神经网络分类器作为本次基于DCT的人脸识别系统设计的分类器，并对BP神经网络进行分类的算法进行设计，BP神经网络具有学习功能，只要采用本系统对训练图片进行训练，就可以记下图像的相关信息，对于测试图片，就可以很准确的识别出该图片是属于哪个的。最后，本文对整个人脸识别系统设计实验进行了实验分析，实验结果表明本文采用的方法切实有效。- This is the design of the DCT-based face recognition systems. First of all, the background light of the current face recognition and face recognition to discuss the development of research in all aspects of content and applications And then studied the pretreatment of face recognition to discuss the pre-treatment of other face recognition methods,and analysis of the pros and cons of various methods, finally, the use of DCT (discrete cosine transform) image pre-processing to achieve in the face of the reduced-order processing Next on the face image feature extraction have been studied, A brief description of the feature extraction and algebraic geometry feature extraction, while in-depth study based on the DCT and the PCA Transform face image feature extraction in order to achieve face recognition system to identify whether the rate of increase in the research For the choice of classifier, this paper carried out on two of classifier, that is, nearest neighbor classifier and BP neura
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Author: 刘文珍 |
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Description: 在matlab中bayes和Fisher分类器设计的小程序代码，实现垃圾邮件和正常邮件的分离，比较不同维度，不同样本，两种分类器正确率的优劣，适合初学者学习-In matlab the bayes and Fisher classifier design a small program code, junk mail and regular mail to achieve the separation of comparing different dimensions, different samples, the correct classification rate of both the pros and cons, suitable for beginners to learn
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Author: gabielle |
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Description: 代码是基于Matlab的图像融合算法性能测试，可以对各种融合算法进行分析并且看出各种算法融合效果的优劣-Matlab code is based on performance tests of image fusion algorithms that can analyze a variety of fusion and fusion to see the pros and cons of various algorithms
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Author: niuwenbin |
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Description: ＭＡＴＬＡＢ编写的Ｓ正反变换程序，程序方便易懂-Pros and cons of changing the S written in MATLAB program, the program easy to understand
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Description: 乳腺X线图像增强质量评价的ＭＡＴＬＡＢ程序，这里使用对比度和ＤＳＭ两种评价方法对乳腺Ｘ线图像增强方法的优劣做一个客观的评价。-Breast X-ray image enhancement the quality assessment of the MATLAB program, where the use of contrast and DSM two evaluation methods to make an objective assessment of the pros and cons of breast X-ray image enhancement method.
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Author: 高 |
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Description: 利用matlab开发的机床直线和圆弧插补程序，可以进行四个象限的优劣圆弧，顺逆圆弧插补，同时可使用逐点比较法和数字积分法两种方法插补，软件界面简单明了、清楚，易操作。-The use of MATLAB development of machine tool of linear and circular interpolation procedures, can be carried out in four quadrants of the pros and cons of circular, clockwise arc interpolation, at the same time using point by point comparison method and digital integration method of two kinds of interpolation, the software interface is simple, clear, easy to operate.
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Author: LEO |
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Description: matlab用fft分析两种SPWM算法的优劣。实现时域数据的生成，频谱的比较。-matlab fft analysis of the pros and cons of the two SPWM algorithm. To achieve the generation of the time domain data, the comparison spectrum.
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Author: jifan |
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Description: 阐述了MATLAB 与VC 交互的三种方式, 深入分析了MATLAB 引擎的原理和使用方式, 详细地论述了使用MATLAB 自
带编译器和使用MATCOM 对MATLAB 的M 文件进行代码转换的步骤。针对每种方式给出了关键代码, 并对三种方式进行
比较, 分析各自适用的场合和利弊, 得出MATLAB 与VC 进行交互的最优方式, 使得MATLAB 强大的计算能力和数据处理能
力与VC 优秀的编程能力结合起来。-MATLAB and VC elaborated interact in three ways, in-depth analysis of the principles and use MATLAB Engine manner discussed in detail using the MATLAB built-in compiler and use MATCOM on MATLAB M-files are transcoded steps. For each method gives the key code, and three ways to compare, analyze their possible applications, and the pros and cons, MATLAB and VC obtained the optimal way to interact, making the powerful MATLAB computing power and data processing capabilities and VC Excellent programming skills together.
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Author: renxiaoqian |
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Description: 分数阶变换课件，包括MATLAB实现函数，对比分析其利弊-Fractional conversion courseware, including MATLAB implementation function, comparative analysis of the pros and cons
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Author: emmayang |
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Description: 射线追踪,包含了起点和终点的射线函数，对于地震传播研究具有重要意义！-Raytracing in a v(z) world. The toolbox contains functions forshooting fans of rays and functions for tracing rays with specific start and end points. General multi-bounce rays with any number of mode conversions can be traced. Automatic routines for P-P and P-S primaries in shot-gather geometry are provided for convenience. Any recording geometry can be used but most functions
vectorize (e.g. are most efficient) for shot-gather geometry. Only
traveltimes and rayparameters are detemined, not amplitudes. In these routines, the velocity models should be considered as "background" models. This means that the depths at which flections and mode conversions occur are dependent of the depths given as layer boundaries in the velocity models. Velocity models are specified by a vector of velocities and a same-size vector of depths. The j th velocity is in effect from the j th to the j+1 th depth.
The bottom of the model is assumed at infinite depth. Thus v=5000
and z=0 specifies a cons
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Author: 旅游 |
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Description: 用topsis法求取各评价方案的优劣。构建了MATLAB代码来求解-Calculated by the TOPSIS method of the pros and cons of scheme uation.
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Author: 张浩 |
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Description: 利用MATLAB gui 编的短波通信系统，录制一段语音信号，分别通过AM SSB DSB 等调制信号，加入噪声，然后解调出来，可比较各种调制解调方式的优劣。-Use MATLAB gui compiled shortwave communication system, record a voice signal, respectively, by AM SSB DSB modulated signal, etc., added noise, then demodulated, you can compare the pros and cons of various modulation and demodulation.
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