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error correcting code
相关语句
  纠错码
    (16. 8. 5)ERROR CORRECTING CODE AND ITS APPLICATIONS FOR DATA COMMUNICATIOS IN MICROCOMPUTER BASED SYSTEMS
    (16.8.5)纠错码及其在微机数据通讯中的应用
短句来源
    Error Correcting Code Performance Testing Simulation Based on Matlab
    基于Matlab的纠错码性能测试仿真
短句来源
    Study of Quantum Error Correcting Code
    量子纠错码的研究
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    Application of Error Correcting Code in M-ary Spread Spectrum Communication System
    纠错码在M元扩频通信系统中的应用
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    Channel SNR Estimation Based on Error Correcting Code for ADSL
    基于纠错码的ADSL信道信噪比估计算法
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  纠错编码
    At the same time, the thesis brings forword a new quantum encryption protocol and analyses its security. The protocol that combines error correcting code, traditional cipher and quantum mechanics uses shared key and single quantum to transfer private message.
    本文利用纠错编码、传统密码与量子原理相结合提出了一个基于单量子的量子加密协议,并且分析了量子加密协议的安全性。
短句来源
    Abstract: According to the formed CD recording information, the principle of digital processing system, audio error correcting code and EFM technology is analyzed and explored.
    结合激光唱片记录信息形成过程,对音频数字处理系统。 音频纠错编码及EFM调制技术等原理做了分析、探讨。
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    This paper analyzes the technology of error correcting code(Turbo code),which is becoming more and more popular in recent years. Its aim is to clarify the basic principle of Turbo code and influence of various parameters on its performance as well as the application in wireless communication systems.
    就近年来的研究热点纠错编码Turbo码进行分析,旨在阐明Turbo码的基本原理和各参数对Turbo码纠错性能的影响以及在无线通信系统中的应用。
短句来源
    The union of the error correcting code and parameter-induced stochastic resonance(PSR) was proposed to reduce the bite error rate(BER) of the digital signal processing.
    为了有效地降低数字信号传输过程中的比特误码率,提出了纠错编码与参数调节随机共振技术的结合.
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  “error correcting code”译为未确定词的双语例句
    The Design and Implementation of Error correcting Code for Video Signals in H.263
    H.263视频信号纠错编译码的设计与实现
短句来源
    After a brief description of error correcting code of applied digital video signals in H.263,this paper focuses on the design and implementation of BCH(511,493) error correcting code.
    首先介绍了H.263建议中视频信号纠错编码的应用,然后着重介绍了BCH(511,493)纠错编译码的设计及其实现。
短句来源
    Research on Down Converter and Error Correcting Code of Spread-Spectrum Communication System of Special Low Earth Orbit Satellite
    特种小卫星扩频通信系统中的下变频与纠错编码的研究
短句来源
    Reed-Solomon (RS) code is an important cyclic code. It is a powerful error correcting code, with simply encoding and mature effective decoding arithmetic. It is widely applied to varied wireless communication systems.
    Reed-Solomon(RS)码是一种重要的循环码,它纠错能力强,编码简单,译码算法成熟有效,广泛应用在各种无线通信系统中。
短句来源
    In addition, we go deep into the research of the technology about error correcting code for video transmission. Based on the MPEG-4, some available methods are presented then.
    另外,深入研究了视频传输中差错复原视频编码技术,然后提出了基于MPEG-4标准采用的几种视频编码纠错方法,并通过测试数据说明了它们的优点。
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  error correcting code
An efficient software implementation of a forward error correcting code
      
Redéi to prove, that every perfect 1-error correcting code C of length p?+ 1 over an alphabet of cardinality p, such that C has a rank equal to p and a kernel of dimension p - 2, will be equivalent to some Hamming code H.
      
Finally, a detailed product operator description is given of recent NMR experiments which demonstrate a three-bit quantum error correcting code, using field gradients to implement a precisely-known decoherence model.
      
We note that this construction results in a quantum error-correcting code that corrects any n 1 errors.
      
With a powerful error-correcting code, we expect this number to increase.
      
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In this paper, the developments and advances of error-correcting codes before and after year 1970 are described, putting emphasis on the latter. This paper consists of three parts: encode and decode of the block codes and the convolutional codes.

本文简略地回顾了纠错码七十年代以前的发展概况,着重谈了七十年代以后的发展情况及其趋势。全文共分三部分:分组码的编码、分组码的译码以及卷积码。

The switch-adaptive intraframe DPCM picture coding proposed in this paper is: (1) Every present pel (picture element) is determined as non-active or active from an activity value of its previous pel; and one of two adaptive predictors is switched on. (2) According to the minimum-difference direction of the previous pel with its neighboring pels, one of four sets of prediction coefficients is switched on for the prediction of present pel. (3) Two non-linear quantizers are designed from subjective tests for the...

The switch-adaptive intraframe DPCM picture coding proposed in this paper is: (1) Every present pel (picture element) is determined as non-active or active from an activity value of its previous pel; and one of two adaptive predictors is switched on. (2) According to the minimum-difference direction of the previous pel with its neighboring pels, one of four sets of prediction coefficients is switched on for the prediction of present pel. (3) Two non-linear quantizers are designed from subjective tests for the two adaptive predictors, corresponding to nonactive and active pels.Calculations with four test pictures show that, the prediction errors (without quantizer) of the proposed switch-adaptive predictor have its histogram more concentrated in the neighborhood of e = 0, and a decrease of entropy values (0.2 bit/pel in average) in comparison with 2-dim DPCM predictors with constant coefficients.Subjective tests are simulated with three sets of sequence pictures of the sampling frequency 10 MHz. Masking functions are measured to design non-linear quantizers with a minimum number of levels criterion. The minimum number of quantization levels needed for the reconstructed pictures of the proposed scheme which show barely visible differences in comparison with the original sequence pictures are smaller than published works.The results of this paper can be used for DPCM coding of PAL luminance signals with the sampling frequency 10 MHz. The total bit rate for the digital transmission of PAL broadcasting TV signals (including chrominance signals, stereo sound signals and error correcting codes) is fit to PCM 3-rd hierarchy (34.368 Mbits/s).

本文提出的开关型自适应帧内DPCM图象编码的要点是:(1)由前一象素的活动函数值,预报当前象素为非活动象素或活动象索,并选用两个预测器中的某个。(2)由前一象素与其邻近象素的最小差值方向,确定预测器中需选用的4组预测系数中的某组。(3)对应非活动象素和活动象素的两个预测器,由主观实验确定各自的非线性量化器。 对四幅测试图象作的计算表明:本文提出的开关型自适应预测器之预测误差(无量化器),与典型的固定系数二维DPCM预测器相比,其直方图在e=0附近更为集中;其熵值之平均改善量为0.2比特/象素。 用三组序列图象(抽样频率10MHz),通过计算机模拟作主观实验,测定了掩盖函数,并用最小量化分层数目的准则,设计非线性量化器。主观实验结果表明:本文方案之复原图象,与原始图象相比看不出明显差别时,所需之最小量化分层数目,比已发表的工作有一定改善。 本文结果用于亮度信号(抽样频率10MHz)的DPCM编码时,则传输PAL广播电视信号(包括色度信号、双伴音及纠错码)可符合PCM三次群的要求(34.368 Mbits/s)。

Binary Goppa codes are a large and powerful family of error-correcting codes. But how to find the true minimum distance of binary Goppa codes is not yet solved. This paper will give derivation of a new lower bound for the minimum distance of binary Goppa codes. This new lower bound improves the results obtained by Y. Sugiyama et al. (1976) and Feng Guiliang (1983). The method in this paper can be generalized for other Goppa codes easily.

二元Goppa码是一大类很有用的纠错码。但是如何求二元Goppa码的真正最小距离至今没有解决。本文将导出二元Goppa码最小距离的新下限,这个新下限改进了Y.Sugiyama等(1976)和作者(1983)文章的结果。本文的方法不难推广到其他Goppa码中去。

 
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