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tongxi
OFDM(Orthogonal Frequency Division Multiplexing)即正交频分复用技术，实际上OFDM是MCM Multi-CarrierModulation，多载波调制的一种。其主要思想是：将信道分成若干正交子信道，将高速数据信号转换成并行的低速子数据流，调制到在每个子信道上进行传输。正交信号可以通过在接收端采用相关技术来分开，这样可以减少子信道之间的相互干扰 ICI 。每个子信道上的信号带宽小于信道的相关带宽，因此每个子信道上的可以看成平坦性衰落，从而可以消除符号间干扰。而且由于每个子信道的带宽仅仅是原信道带宽的一小部分，信道均衡变得相对容易。本程序实现OFDM与QPSK技术的比较(This program realization technology and the OFDM QPSK technology)
- 2010-10-16 17:21:55下载
- 积分：1
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matlab
第一个是标准差，用于算数学模型均值，评价模型的平均量
第二个熵，用于评价信息量的大小，熵越大信息量越大。
第三个用于pcnn模型,评价是否接近理论模型,残差越小，就越接近理论模型(The first is the standard deviation, the mathematical model is used to calculate the mean, the average amount of uation model.
The second entropy, to uate the size of the amount of information, the greater the entropy the greater the amount of information.
The third for PCNN model, uation is close to the theoretical model, residual error is smaller, the more close to the theoretical model)
- 2014-12-01 17:07:16下载
- 积分：1
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convolutionPcorrelation
a matlab source code for convolution and correlation, combined by annotations
- 2011-05-04 08:55:42下载
- 积分：1
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fdtdPwave
一维波动方程计算的程序，有限差分法,很有用的程序(Program of one-dimensional wave equation, finite difference method fdtd)
- 2012-05-27 21:45:26下载
- 积分：1
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weixingzhuanfaqi
仿真一个从卫星到区域数据中心的下行链路（由一组6个载波构成），评估热噪声，交调（IM）失真、由滤波器引起的码间干扰（ISI）以及临频干扰对下行链路性能的影响。(Simulation of a regional data center from the satellite to the downlink (from a group of six carrier composition) to assess the thermal noise, intermodulation (IM) distortion, caused by the filter ISI (ISI) and adjacent channel interference on the downlink link performance.)
- 2010-08-09 15:36:04下载
- 积分：1
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trackingbasedonkalmanfilter
基于卡尔曼滤波的目标跟踪，里面附有例子说明。(Kalman filter-based target tracking, with examples to illustrate it.)
- 2009-04-23 19:16:40下载
- 积分：1
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image_processing
多种图像边缘检测与分割处理matlab源码(image edge detection and splitting processes, in Matlab)
- 2009-11-27 13:35:59下载
- 积分：1
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testtext
测试文本，选用著名的gettysburg这篇英文文本做为测试文本(Second, it fuses the features of the first singular value component and the second one, and then gets the complex feature vectors which reflect not only the statistic frequency but also the sequential structure of letters. In the end, the cosine similarity of texts is used to measure the similarity between the query and documents.)
- 2010-03-07 13:18:15下载
- 积分：1
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20100528PCA
主元分析法的简单程序，可以以此为基础进步发展改进。(Principal component analysis of a simple procedure that can improve as a basis for progress and development.)
- 2010-05-27 14:49:16下载
- 积分：1
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Kalman
implement of kalman filter in Matlab (implement of kalman filter in Matlab)
- 2008-03-08 16:09:45下载
- 积分：1
