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trans_sigPnoisePinterference
根据直扩原理，首先有随机数发生器产生一系列二进制信息数据（+1，-1），每个信息比特重复Lc次，Lc对应每个信息比特所包含的伪码片数，包含每一比特Lc次重复的序列与另一个随机数发生器产生的PN序列c(n)相乘。然后在该序列上叠加高斯白噪声和形式为i(n)=Acosw0n余弦干扰下次信号，切余弦干扰信号的振幅满足条件A<Lc。在解调器中进行与PN序列的互相关运算，并且将组成各信息比特的Lc个样本进行求和。加法器的输出送到判决器，将信号与门限值0进行比较，确定传送的数据为+1还是-1，计数器用来记录判决器的错判数目。(According to the principle, first some straight expansion random number generator produces a series of binary data (+ 1-1), each information bit repetitive Lc times, Lc for each information bit contains PN code piece count, embraces each bit Lc times repeated sequence and another random number generator produces PN sequence c (n) multiplication. Then in the sequence superimposed on gaussian white noise and forms as I (n) = Acosw0n cosine interference next time signal, cut cosine interfering signal amplitude satisfy conditions A < Lc. In the modem with the cross-correlation operation PN sequence, and the information will comprise the Lc a sample bits peace. The output of the adder judgment device, will signal to compare with threshold 0 data transmitted, determine for+ 1 or-1, counter is used to record the number victimised judgment.
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- 2011-04-20 10:18:47下载
- 积分：1
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chi2test
此代码用于具有卡方或近似卡方分布的统计量的假设检验(chi-square test)
- 2020-11-16 21:29:42下载
- 积分：1
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mpc_1
this is mpc example ....
- 2014-01-30 03:41:55下载
- 积分：1
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Turbopha
In recent years large scientific interest has been
devoted to joint data decoding and parameter estimation
techniques. In this paper, iterative turbo decoding joint
to channel frequency and phase estimation is proposed.
The phase and frequency estimator is embedded into the
structure of the turbo decoder itself, taking into consideration
both turbo interleaving and puncturing. Results
show that the proposed technique outperforms conventional
approaches both in terms of detection capabilities and
implementation complexity.
- 2007-09-18 21:03:37下载
- 积分：1
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ex4_3
用MATLAB作切比雪夫-1型低通滤波器设计(Using MATLAB for-1 Chebyshev-type low-pass filter design)
- 2009-03-17 13:11:26下载
- 积分：1
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MATLAB_qua
They are the programs of uniform quantization and non-uniform quantization.
In digital signal processing, quantization is the process of approximating ("mapping") a continuous range of values (or a very large set of possible discrete values) by a relatively small ("finite") set of ("values which can still take on continuous range") discrete symbols or integer values.
- 2010-11-09 16:42:24下载
- 积分：1
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tubecells
为对细管中的细胞作图像分析，所以就先作了一个管道区域分割的程序，用的的竖直直线和水平直线腐蚀的方法，比较基础和大家分享讨论^_^
其中autothreshold是一个自动阈值分割的程序
(For the pairs of thin tube of cells for image analysis, so we made a first pipe region segmentation process, using the vertical and horizontal straight line method of corrosion, compare the basis and share the discussion ^ _ ^
One autothreshold is an automatic thresholding procedure
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- 2009-11-08 17:42:51下载
- 积分：1
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DSP
Digital Signals Processing 数字信号处理（方法、技术）
Digital Signals Processor 数字信号处理器
- 2010-12-31 11:51:41下载
- 积分：1
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mfcc
这是基于matlab的关于Mel频率倒谱系数（MelFrequencyCepstrumCoefficient，MFCC）的代码，对大家理解有一定帮助。(This is based on the matlab Mel Frequency Cepstral Coefficients (MelFrequencyCepstrumCoefficient, MFCC) code for us to understand some help.)
- 2013-11-18 16:34:37下载
- 积分：1
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Matlab_database_GUI
Matlab GUI连接SQL数据库-实现学生成绩查询系统-matlab程序以及access文件(Matlab GUI to connect SQL database- to achieve student performance query system-matlab program and access files)
- 2010-08-09 12:15:44下载
- 积分：1
