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carrier-modulation
多载波调制(Multicarrier Modulation)采用了多个载波信号。它把数据流分解为若干个子数据流，从而使子数据流具有低得多的传输比特速率，利用这些数据分别去调制若干个载波。所以，在多载波调制信道中，数据传输速率相对较低，码元周期加长，只要时延扩展与码元周期相比小于一定的比值，就不会造成码间干扰。因而多载波调制对于信道的时间弥散性不敏感。多载波调制可以通过多种技术途径来实现，如多音实现(Multitone Realization)、正交多载波调制(OFDM)、MC-CDMA和编码MCM(Coded MCM)。其中，OFDM可以抵抗多径干扰，是当前研究的一个热点。(Multi carrier modulation (Multicarrier Modulation) uses multiple carrier signal. It decomposes a data stream into a plurality of sub data stream, so that the sub data stream transmission bit rate is much lower, respectively to a plurality of carrier modulation using these data. )
- 2014-11-26 20:06:23下载
- 积分：1
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Matlab1111
基于matlab数学建模，包含了ppt介绍及程序(Matlab mathematical modeling, including a ppt presentation and procedures)
- 2012-06-17 10:01:15下载
- 积分：1
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MCZT
该代码能够实现改进的线性调频Z变换的功能，取代FFT变换能够起到细化频谱的作用。(The code can achieve improved chirp Z transform function, replace the FFT spectrum can play a role in refinement.)
- 2014-09-24 09:12:08下载
- 积分：1
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Logistic_tuxiang_jiami_jiemi
Logistic映射，图像信号加密和解密，异或算法进行(Logistic mapping, image signal encryption and decryption algorithms XOR)
- 2014-12-01 20:59:01下载
- 积分：1
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calcLocalizationCRB
主要用于实现基于TOA/AOA/RSS/QRSS的二维定位算法，用matlab程序实现，内附有注释(Mainly used to implement based on TOA/AOA/RSS/QRSS two-dimensional positioning algorithm, using matlab program, enclosing a Comment)
- 2013-11-18 23:11:05下载
- 积分：1
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code-QAM
this file give another type of generation of quadrature amplitude modulation
- 2013-12-04 04:42:45下载
- 积分：1
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815889771HVS
这个代码描述了人类视觉系统的几个特性，希望能够对大家有帮助，共同进步！(This code described several characteristics of human visual system, the hope can to help, make progress together!)
- 2010-11-09 20:12:25下载
- 积分：1
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rgb2gray
this is program is used to convert any kind of colour image to grey scale image.
when this code is executed , an window is displayed to accept image and output image is
created in the same folder
- 2011-05-31 12:36:49下载
- 积分：1
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ttf2cxf-0.0.0.1-src.tar
truetype to cxf converter
- 2014-08-13 18:00:18下载
- 积分：1
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vicsek
基于matlab的visek模型的数值模拟，可以修改粒子的数量，每步迭代的权重与速度，并将最后各例子的位置及欲动的速度用箭头表示出来，对其他类似作图有一定的借鉴意义。(A matlab code for visek model. the user may change the number of particles, and the related velocity and weight. it gives the final places and velocities of each particle, and could be used for other similar simulations)
- 2014-10-04 14:34:30下载
- 积分：1
