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LDPCBSN
LDPC码既低密度奇偶校验码（Low Density Parity Check Code，LDPC），它由Robert G.Gallager博士于1963年提出的一类具有稀疏校验矩阵的线性分组码，不仅有逼近Shannon限的良好性能，而且译码复杂度较低, 结构灵活，是近年信道编码领域的研究热点，目前已广泛应用于深空通信、光纤通信、卫星数字视频和音频广播等领域。LDPC码已成为第四代通信系统(4G)
(LDPC codes BER simulation under AWGN channel. MacKay-Neal based LDPC matrix. Message encoding uses sparse LU decomposition. There are 4 choices of decoder: hard-decision/bit-flip decoder, probability-domain SPA decoder, log-domain SPA decoder, and simplified log-domain SPA decoder.)
- 2009-03-14 11:01:22下载
- 积分：1
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STEPDOWNCHOPPER
Basic Step Down chopper
- 2010-10-02 13:34:25下载
- 积分：1
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Image-de-noising-based-on-WT
基于Matlab，利用小波变换进行图像去噪(Image de-noising based on wavelet transform)
- 2013-11-25 22:07:22下载
- 积分：1
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feixianxing
基于matlab的非线性仿真，适用于不同环境(Applicable to different environments based on of matlab the nonlinear simulation)
- 2013-03-20 19:17:25下载
- 积分：1
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10[1].1.1.66.2227
In this paper, we present a novel data-based method for simultaneous Maximum Likelihood
(ML) symbol and carrier-frequency o畇et estimation in Orthogonal frequencydivision
multiplexing (OFDM) systems. Statistical properties introduced by the cyclic
pre痻, a guard space between OFDM symbols, provide su眂ient information about the
unknown parameters. It is shown that the redundancy introduced by this cyclic pre痻
allows the estimation to be performed without additional pilots. Simulations show that
the performance of the frequency estimator is applicable in a tracking mode while the
timing estimation can be used in an acquisition mode.
- 2010-08-18 12:18:23下载
- 积分：1
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imlook3dv12
这是一个三维图像显示的Matlab实例程序。支持DICOM MR CT PET等图像格式。
(This is an example of three-dimensional image display of the Matlab program. Support for DICOM MR CT PET and other image formats.)
- 2010-09-04 15:53:57下载
- 积分：1
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manual_camera_calibration_v1.0
对摄像机进行标定。学习之用。学写代码的话比看OPENCV的代码要好，使用的话OPENCV或者MATLAB都足够了(Calibration of the camera. Learning. Write code, then look OPENCV than the code is better, the use of words or MATLAB are OPENCV enough)
- 2007-07-25 11:04:37下载
- 积分：1
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AR
说明： 随机信号处理AR自回归模型，谱分析的一种重要方法(Random signal processing AR auto-regressive model, spectral analysis of an important method)
- 2008-04-16 12:44:31下载
- 积分：1
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xiao_qiu
理论力学-小球与弹簧块matlab模拟（xqythk.m xqythkfun.m ） (Theoretical Mechanics- small ball and spring block matlab simulation (xqythk.m xqythkfun.m))
- 2009-12-27 08:59:02下载
- 积分：1
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hi
this file contains the medical image processing.
Here, I have to find the preprocessing methods. In this implementation i have to add the salt and pepper noise.
- 2013-10-01 23:32:54下载
- 积分：1
