编码理论

从编码理论和话务理论出发，分析了三值CDMA移动通信系统的系统容量。

In this paper , the analysis of ternary CDMA cellular mobile communication system capacity is based on coding theory and telephone traffic theory .

本文的研究与分析，主要集中在：第一章介绍了信道编码理论与技术的发展，讨论了Turbo码的发展与应用；

Introduce the development of channel coding theory and technique , and discuss the development and use of Turbo code in Chapter 1 ;

视频编码理论与MPEG-4的DSP实现

Video Compression Theory and Implementation of MPEG-4 Codec with DSPs

第二章介绍UNICODE编码理论的基础。

The chapter 2 introduces the theory basis of Unicode .

P置换的设计是分组密码设计中的一个重要课题。一直以来，利用编码理论中的MDS码可以设计出许多性质优良的P置换。

The MDS codes in the coding theory have lots of cryptographic usage , they have been used to design the P-permutation in many block ciphers .

高维大码距Hamilton阵列编码理论与综合算法

The theory of Hamilton array codes for high dimension and big Hamming distance and the synthesis algorithm

本论文首先回顾了信道编码理论和turbo卷积码理论，然后研究了在加性白噪声信道中存在码间干扰情况下的卷积turbo码的性能。

Present framework first reviews channel coding theories and turbo convolution codes then investigate practical performance of turbo convolutional code over noisy inter-symbol interference channels .

本论文在信息论的信道容量及香农编码理论的基础上，引入了接近香农理论极限的信道编码Turbo码。

On the basis of channel capacity and shannon limit of information theory , we introduce the Turbo codes which obtain the near capacity performance .

Polar码是至今为止理论上唯一可达到香农限的一类信道编码理论，而且具有低复杂度的编译码算法。

Polar code is so far the only kind of channel coding scheme which can achieve the Shannon limit in theory with low complexity encoding and decoding algorithm .

Turbo码是近年信道编码理论研究的热点课题，而交织器的设计则是Turbo码研究中的主要问题之一。

Turbo codes is an interesting topic in the channel coding theory recently , and interleaver design is one of the important aspects in Turbo codes .

随着编码理论和VLSI技术的发展，编解码设备做得越来越简单、成本越来越低，因而纠错技术在实际的数字通信中逐渐得到更广泛应用。

With the development of encoding theory and the VLSI technique , encoding equipment is more simply and cheaper . Therefore , error correcting technique is used widely .

由于香农在信道的编码理论中证明了随机码达到近Shannon限的性能，所以一经提出便受到关注。

Because Shannon has proved that random code had the nearly Shannon limit performance , random code is be attention when it is once discovered .

在过去几十年里，伪随机序列在编码理论、密码学及现代通讯系统，譬如码分多址（CDMA）、雷达、声纳中起着非常重要的作用。

Pseudo-random sequences have been playing an important role for several decades in modern communication systems such as code division multiple access ( CDMA ), code , radar , sonar and cryptography .

本文的工作内容主要包括：1.概括性的叙述了信道编码理论发展历程，总结Turbo码研究过程中的现状及发展前沿走势。

The content of this thesis mainly includes : 1 . Synoptically describe the development of channel coding , then summarize the research and development trends of Turbo codes . 2 .

第四章首先描述了我们提出的偏振编码理论，并利用液晶编码，设计了MSD加法运算模块。

In chapter four , according to our polarization encoded logic theory , we designed the MSD adder module .

由于具有最高的非线性度并满足最高阶的扩散准则，bent函数在密码、编码理论、序列以及信号设计理论中都有重要的应用。

Bent function has the highest nonlinearity and satisfies the highest degree propagation criterion , so it has very important applications in cryptography , coding theory , sequences and signal designing theory .

Shannon的通信的数学理论一文，标志了编码理论的开始，同时也证明了好码的存在。

The article " A mathematical theory of communication " by Shannon , made the beginning of coding theory , and also proved the existence of good codes .

第二章对卫星通信信道模型进行分析，并结合香农编码理论针对DVB-S2中采用的编码方案进行讨论；

In chapter 2 , a typical channel model for satellite application is presented with a basic study on its channel capacity .

自从Shannon在1948年开创了信息论与编码理论以来，经过近60年年的发展，信道编码技术已经成为通信领域中一个重要而独特的分支。

Ever since the foundation of Information and coding theory by Claud Shannon in 1948 , the channel coding technology has become an indispensable and special branch in modern communications after 60 years of development .

本文引入跳频通信地址编码理论，结合无线电引信的具体特征，提出了适用于无线电引信的频率捷变序列的选择原则，并构造了基于RS码的宽间隔频率捷变序列族。

According to the theory of address coding in the hopping-frequency communication , the paper presents the principle of selecting the frequency agility sequence which fit to the radio fuze and constructs the frequency agility sequence family based on the RS codes .

第三章介绍了G.723.1算法的主要原理，并对G.723.1算法中使用的主要编码理论以及G.723.1标准的主要算法作了重点介绍。

723.1 algorithm , the main coding theory which Is used by the G. 723.1 algorithm and the main computation of the G. 723.1 algorithm .

本文认为小波视频编码理论成熟、性能优于传统的DCT视频编码；在基于小波的视频编码方案中，帧间小波滤波方案又具有相对较优的综合性能。

It is considers in this paper that wavelet video coding has mature theory and its capability exceeds the traditional coding techniques based on DCT , and that the inter-frame wavelet filtering scheme has the best performance among various wavelet based video coding schemes .

信道编码理论及技术作为现代通信系统必不可少的关键技术，近几十年在Shannon信道编码定理的指引下已经经历了飞速的发展并取得了大量的研究成果。

Channel Coding theory and technology are the indispensable key technologies of modern communications system , and they have experienced rapid development and obtained a huge amount of research results under the guidance of the Shannon channel coding theorem in recent decades .

在详细分析系统功能基础上，提出了基于Cohen-Sutherland编码理论的相位角区域编码数字细分、辨向算法。

And in the meantime , put forward an algorithm of digital subdivision and identifying direction about phase sector on which based Cohen-Sutherland code theory .

在概述了图像压缩编码理论的基础上，首先介绍矢量量化压缩编码理论，提出了一种基于模拟退火的LBG改进算法，并通过实验验证了改进算法的性能；

After summarize the basic theory on image code compress , we firstly introduce the vector quantization theory , and we also propose a LBG improved algorithm based on simulated annealing with experimentation to verify the performance .

提出利用信息学编码理论中的线性纠错码LECC来改善当前计算机网络中进行大型数据传输时存在速度慢、可靠性低等问题。

This paper uses linear error correction code ( LECC ) of the informatics encoding theoretics to solve the problems of slowness and low reliability on transmission of big data file .

阐述了位移连续码的编码理论及算法。

The theory and algorithm for shift sequence code is expounded .

结论该研究部分验证了双重编码理论。

Conclusion The dual-coding theory was validated partly in this study .

高维条码识别技术和编码理论的研究

Research on Recognition Technology and Encoding Theory of High-Dimensional Bar Code

三维多进制条码的编码理论及可行性研究基于LPDC码的分布式多进制相关信源编码

Encoding theory and feasibility studies of three-dimensional multiple system bar code