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dsss
信源为数字信号信道信噪比为10dB的直扩通信系统仿真实验--直扩通信系统仿真源代码(Source to a digital signal channel 10dB SNR DSSS communication system simulation- DSSS communication system simulation source code)
- 2011-05-10 15:51:21下载
- 积分：1
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DCTlicheng
研究表明，构成K一L变换矩阵的向量也就是ToePhtz矩阵的特征向量。与此同时，离散
余弦变换矩阵逼近于ToePutz矩阵的特征向量矩阵，所以离散余弦变换矩阵与自然图像的
K一L变换矩阵十分相似。经过离散余弦变换后的变换系数块的协方差矩阵Cy非常接近对角
阵，即除了对角线元素以外，其它很多元素都近似为0，并且在左上角集中了主要能量。这
反映了自然图像大部分区域变化不大，亮度突变只占少数，即图像能量以低频成分为主的特
性。通过变换后的量化，舍弃对视觉效果影响较小的次要信息，可达到进一步的压缩效果。
虽然从去相关性能的意义上讲，DCT是一种次于K一L变换的准最佳变换，但是从算法实现的角度来看，DCT则远远优于K一L变换。首先，当图像的分块大小确定后，DCT的变换矩阵也就随之确定了，不随输入信号的统计特性变化而变化 其次，二维DCT能够分解成两次一维DCT，有利于硬件实现。
(Studies have shown that constitute a K L transformation matrix vector is ToePhtz eigenvector of the matrix. At the same time, discrete
The cosine transform matrix approximation in ToePutz matrix eigenvector matrix, so the discrete cosine transform matrix and natural images
Is very similar to a K L transformation matrix. After discrete cosine transform, the transform coefficient block of Cy is very close to the diagonal of covariance matrix
Matrix, namely except diagonal elements, many other elements are approximate to 0, and focused the main energy in the upper left corner. this
Reflects the natural images most area changed little, brightness mutations accounted for only a few, the energy is given priority to with low frequency components of image
Sex. Through quantitative after transformation, abandoning smaller effect on the visual performance of secondary information, can achieve further compression effect.
Although from related to the performance of the sense, DCT is a kind o)
- 2013-11-25 16:00:24下载
- 积分：1
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BPSK_system
BPSK调制的通信系统，包括：
（1）随机数据产生及BPSK 调制
（2）插值处理
（3）三种低通滤波器的设计（从升余弦滤波器改为平方根升余弦滤波器
（4）载波调制
（5）从升余弦滤波器改为平方根升余弦滤波器
（6）AWGN 信道
（7）匹配滤波
（8）采样与解调，误码率计算
（9）误码率的理论曲线以及仿真曲线
整个(A BPSK based communication system, including modulation, AWGN, low-pass filter,BER caculation.)
- 2020-12-08 11:29:20下载
- 积分：1
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ruili
对雷达回波中的接收机瑞利分布热噪声以及环境中的瑞利分布杂波进行了仿真。(Rayleigh distributed thermal noise in the radar echo and Rayleigh distribution clutter in the environment were simulated.)
- 2018-03-11 12:51:46下载
- 积分：1
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eyefind
眼睛检测，有助于帮助检测眼睛定位的代码，眼睛定位(Eye detection, eye detection help positioning code, eye positioning)
- 2009-03-27 13:30:32下载
- 积分：1
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fig1
Matlab code for Alamouti with different taps
- 2009-07-14 22:32:35下载
- 积分：1
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viterbi
程序先进行卷积编码，然后进行viterbi译码，程序有纠错功能，中间出现误码，程序解码时会自动纠正(Convolution coding program first and then viterbi decoding program has error correction, the error appears in the middle, when the program will automatically correct decoding)
- 2014-11-23 08:20:58下载
- 积分：1
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SHUXUEGUIHUA
在数学规划，尤其在数学建模中，很好用,可以参考(In mathematical programming, especially in mathematical modeling, easy to use, you can refer to)
- 2013-12-15 17:39:45下载
- 积分：1
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PSOexample
关于多维变量PSO算法优化，是基于matlab的算法分析。可解决电力系统中无功优化等类似问题。例子中是2维的，若要增加变量请自行更改程序(PSO algorithm to optimize multidimensional variable matlab-based algorithm analysis. Solve the power system reactive power optimization and other similar issues. Example is 2-dimensional, To increase the variable your own change program)
- 2012-11-08 12:00:06下载
- 积分：1
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MilTrack_matlab_v1.0
MATLAB demo for paper "Visual Tracking with Online Multiple Instance Learning" by Boris Babenko, Ming-Hsuan Yang, Serge Belongie ,CVPR 2009, Miami, Florida. (MATLAB demo for paper "Visual Tracking with Online Multiple Instance Learning" by Boris Babenko, Ming-Hsuan Yang, Serge Belongie ,CVPR 2009, Miami, Florida.)
- 2013-04-26 16:43:57下载
- 积分：1
