在理论分析循环码编码和译码基本原理的基础上，提出了基于单片机系统的(24，16)循环码软件实现编码、译码的方案。仿真结果表明(24，16)循环码能有效地克服来自通讯信道的干扰，保证数据通信的可靠及系统的稳定，使误码率大幅度降低。本论文对(24，16)循环码的研究结果表明，可以有效地降低错误概率和提高系统的吞吐量，实现纠错仅需要在接收端增加有限的存储空间和计算复杂度，具有一定的实用价值。 Abstract: Based on analyzing the theory of encoding and decoding of cyclic code， this paper showed the schemes of encoding and decoding of(24，16)cyclic code by the software and based on microcontroller. Simulation results show that using (24，16) cyclic codes can effectively overcome the interference from communication channel， ensure the reliability and stability of data communication systems， and reduce the bit error rate greatly. The results of this paper show that by using the (24，16) cyclic code， the error rate can be reduced and the system throughput can be improved. Meanwhile， the system only needs to enlarge limited storage space and computation the complexity at the receiving end to realize error Correction. Thus the (24，16) cyclic code has a practical value.
上传时间： 2013-11-09
上传用户：gaoliangncepu
为深入了解基于UC3854A控制的PFC变换器中的动力学特性，研究系统参数变化对变换器中分岔现象的影响，在建立Boost PFC变换器双闭环数学模型的基础上，用Matlab软件对变换器中慢时标分岔及混沌等不稳定现象进行了仿真。在对PFC变换器中慢时标分岔现象仿真的基础上，分析了系统参数变化对分岔点的影响，并进行了仿真验证。仿真结果清晰地显示了输入整流电压的幅值变化对系统分岔点的影响。 Abstract: In order to better understand the dynamics characteristic of power factor Correction converter based on UC3854A， and make the way that parameters change influences the bifurcation phenomena of the system clearly. The math model of the two closed loop circuits to the Boost PFC （Power Factor Correction） converter controller was built. Then， with the help of Matlab， the simulation for nonlinear phenomena such as chaos and slow-scale bifurcation in the PFC converter was made. Finally the factors that have influence to the phenomenon of bifurcation under slow-scale in PFC converter were analyzed. The simulation results clearly show the parameters change influences the bifurcation point of the system.
上传时间： 2013-10-17
上传用户：杜莹12345
This a Bayesian ICA algorithm for the linear instantaneous mixing model with additive Gaussian noise [1]. The inference problem is solved by ML-II, i.e. the sources are found by integration over the source posterior and the noise covariance and mixing matrix are found by maximization of the marginal likelihood [1]. The sufficient statistics are estimated by either variational mean field theory with the linear response Correction or by adaptive TAP mean field theory [2,3]. The mean field equations are solved by a belief propagation method [4] or sequential iteration. The computational complexity is N M^3, where N is the number of time samples and M the number of sources.
标签： instantaneous algorithm Bayesian Gaussian
上传时间： 2013-12-19
上传用户：jjj0202
利用FaxModem通过串口或TAPI接口直接发送和接收传真 一套非常不错的传真库(稳定，高速)，几乎支持所有的FaxModem，出自Symantec公司 Winfax 中国作者之手。 一 .Some of the standard features: 1.Comes with Class1, Class1.0, Class2 and Class 2.0 Fax Drivers 2.Class 1 ECM error Correction . 3.Supports CCITT T.30 Specifications . 4.TAPI Support with sample code 5.Caller ID 6.Group 4 Faxing 7.Remote Fax Retrieval with password protection 二 .Function declare Reference: include\SmarFaxh.h
上传时间： 2013-12-23
上传用户：xiaoyunyun
Hard-decision decoding scheme Codeword length (n) : 31 symbols. Message length (k) : 19 symbols. Error Correction capability (t) : 6 symbols One symbol represents 5 bit. Uses GF(2^5) with primitive polynomial p(x) = X^5 X^2 + 1 Generator polynomial, g(x) = a^15 a^21*X + a^6*X^2 + a^15*X^3 + a^25*X^4 + a^17*X^5 + a^18*X^6 + a^30*X^7 + a^20*X^8 + a^23*X^9 + a^27*X^10 + a^24*X^11 + X^12. Note: a = alpha, primitive element in GF(2^5) and a^i is root of g(x) for i = 19, 20, ..., 30. Uses Verilog description with synthesizable RTL modelling. Consists of 5 main blocks: SC (Syndrome Computation), KES (Key Equation Solver), CSEE (Chien Search and Error Evaluator), Controller and FIFO Register.
标签： symbols length Hard-decision Codeword
上传时间： 2014-07-08
上传用户：曹云鹏
It support IPv4 and IPv6 unicast and multicast and contains a trivial sender and a trivial receiver that can be used to send or receive arbitrary data over RTP. An implementation of generic forward error Correction is planned, t
标签： and trivial multicast contains
上传时间： 2013-12-13
上传用户：金宜
t transistor has the characteristics of components of the sensor real-time measurement of voltage and current signals through, obtained quality factor Correction circuit for the feedback and the feedback time, IBM used the feedback field effect transistor implementation, in order to achieve quality factor Correction circ
标签： characteristics measurement transistor components
上传时间： 2014-12-21
上传用户：杜莹12345
Author: wei liu Summary: simulation of binary and non-binary bch decoder MATLAB Release: R14SP1 Required Products: Communications Toolbox Description: simulation of binary bch decoding algorithm for bch(n, k) with t bits error Correction capability.
标签： simulation non-binary Summary Release
上传时间： 2014-01-10
上传用户：frank1234
This document is intended to serve as an introduction to Wavelet processing through a set of Matlab experiments. These experiments will gives an overview of three fundamental tasks in signal and image processing : signal, denoising and compression. These scripts are selfs contents (needed additional Matlab functions can be downloaded while reading the lectures). Each one of these five lectures should take between 1h and 2h in order to tests the various features of the scripts. One should copy/paste the provided code into a file names e.g. tp1.m, and launch the script directly from Matlab comand line > tp1 . Some of the scripts contains "holes" that you should try to fill on your own. I also provide the complete Correction of these lectures as a set of Matlab scripts, but you should try as much as possible to avoid using them.
标签： introduction processing document intended
上传时间： 2016-03-21
上传用户：qlpqlq
Calculates the Variance Ratio Test of a time series, with or without the heteroskedasticity Correction.
标签： heteroskedasticity Calculates the Variance
上传时间： 2016-03-24
上传用户：ynwbosss
