信道编码技术

基于3G的信道编码技术的研究

Research on Channel Coding Techniques Based on 3G

随着信道编码技术在数字通信领域的广泛应用，信道编码盲识别问题也日益突出。

In these fields , it also requires the use of blind identification of channel coding techniques .

Turbo码是信道编码技术的里程碑。

Turbo codes are milestone in channel codes .

WCDMA系统中信道编码技术的分析与研究

The Analyse and Research of Channel Coding in the System of WCDMA

WCDMA移动通信系统的信道编码技术的研究

Study of Channel Coding Technology in WCDMA Mobile Communications Systems

自1993年Turbo码出现以来，信道编码技术进入了一个崭新的时代。

Content : Since 1993 , Turbo yards channel encoding technology has entered a new era .

Ka频段固定卫星信道编码技术研究

Research on Channel Coding suit for Ka-band Fixed Satellite Communication

为了获取接近MIMO容量极限的性能，常常还必须依赖于信道编码技术来有效地对抗干扰、噪声和衰落。

To approach the performance of MIMO channel capacity , channel code is usually employed to combat interference , noise and fading .

无线数传模块基于FSK调制，采用高效前向纠错信道编码技术；

The wireless data transmission module uses FSK modulation and forward error correction coding .

并对此系统的信道编码技术进行了研究，分别采用卷积码和Turbo码分析其双通道编码时其误码率的影响。

Discuss the channel coding for this system , analysis convolutional code and Turbo code impact on dual-channel coding of the interaction .

第一章首先介绍了数字电视的相关知识，然后对OFDM系统的主要特点进行了说明，最后提到了信道编码技术，说明了DVB-T系统中用到的纠错码。

The first chapter introduces some knowledge of DVB , the main characteristics of OFDM , and channel coding technique .

大名鼎鼎的Turbo码因其逼近香农限的性能，自1993年提出以来一直是信道编码技术的研究热点。

Since advanced in 1993 , Turbo coding , well known for its near Shannon performance , has always been the focus of channel coding research .

由于Turbo码具有优良的纠错性能，已经成为3G协议标准中高速数据的信道编码技术。信道编码方案是信道编码技术和其它通信技术（如交织技术）的结合。

Because the correction capacity of Turbo codes is fairly good , they have become the channel coding technique of high speed data transmission in 3G protocol .

DVB-S中的信道编码技术

Channel Coding Technology for DVB - S

由于采用了这种前向差错控制（FEC）信道编码技术，使得CDMA系统具有了较好的抗远近效应性能。

The CDMA system attains the better performance of resisting near-far effective because of employing this forward error control ( FEC ) channel coding technology .

低密度奇偶校验（Low-DensityParity-Check，LDPC）码是一种先进的信道编码技术，它具有逼近香农限的纠错性能。

Low-Density Parity-Check ( LDPC ) codes are one kind of error control codes , whose performance can be near Shannon limit .

同时MIMO的空时编码技术将信道编码技术和阵列处理技术相结合，在不同的天线所发送的信号中引入时间和空间相关性，从而在接收端可以通过空时信号处理获得分集增益和编码增益。

At the same time , the space-time codes technology of the MIMO system combine channel coding technology and array processing technologies , which introduces the time and space correlation of the sending signal in different antenna .

论文还对信道编码技术、扩频系统的同步技术和RAKE接收技术进行了研究，提出了一种用威拉德序列做同步头来完成系统同步定时及信道多径时延估计的方案。

After that the techniques of channel coding , synchronization and RAKE receiver were investigated , the method using a Willard sequence for synchronization of system and acoustic channel multipath time-delay estimate was found .

本文分析表明，HDTV的关键技术主要包括信源压缩编码、信道编码技术及传输调制技术，而传输调制方式则是HDTV体制的核心内容。

It is shown that the key techniques include the methods of information compressed encoding , channel encoding and modulation , which the modulation format is the decisive factor in the HDTV system .

为了满足高速、高质量业务的传输要求，TD-SCDMA协议标准采用性能接近香农极限的Turbo码作为主要的信道编码技术。

In order to meet the high speed , high quality business transmission requirements , td-scdma agreement standard use Turbo code which has a performance is close to the Shannon limits as the main channel coding technology .

首先对信道编码技术进行了研究，鉴于卷积码Viterbi译码的最优的特性和相对适中的复杂度确定译码器编码译码方式：卷积码Viterbi译码。

The thesis includes following work : Firstly , based the research on channel coding scheme , chose the convolutional coding / Viterbi decoder because of the excellent characteristic and the moderate complexity .

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 .

本文论述了一种基于软件无线电的甚低频低码率语音数字岩层通信机，它采用了QPSK调制和FEC信道编码技术。

This paper deals with a digital speech communicator of very low frequency and low bit digital communication based on software ratio , which uses the technique of QPSK and FEC coding .

信道编码技术是未来宽带无线通信系统中关键技术之一，而LDPC（LowDensityParityCheck，低密度奇偶校验）码具有逼近Shannon限的性能，是信道编码研究领域的一个热点。

Channel code is one of the key technologies in the future wide-band wireless communication system . As a class of error-correcting codes that has performance approaching Shannon limit , low-density parity-check ( LDPC ) codes is a hot topic in the research area of channel code .

Turbo码代表着当今世界上最先进的信道编码技术，因为它具有极其逼近香农极限的纠错性能，所以Turbo码一出现便吸引了通信领域无数专家学者的关注与研究。

Turbo code represents the most advanced channel coding technology in the world nowadays . Because its error-correcting performance is very closely to the Shannon limit , Turbo code attracting concern and study of countless experts and scholars in communication domain once it appears .

作为一种高增益的信道编码技术，低密度奇偶校验（LDPC）码具有诸多优点，在深空通信领域具有广阔的应用前景。

As a high-gain channel coding technology , low density parity check ( LDPC ) codes have many advantages , so there are broad prospects to be used in fields of deep space communication .

其物理层协议为支持这一高带宽特性集合了多种调制和信道编码技术，包括随机化、RS-CC编码、交织、多种数字调制技术、OFDM技术，还有可选择采用的空时编码技术。

To support this wideband feature , the PHY adopts various modulations and FEC technologies including randomization , RS-CC encoding , interleaving , multiple digital modulation , OFDM and the optional space-time coding .

DVB-S2是新一代数字卫星广播标准，采用更高效的信道编码技术和自适应编码调制技术，传输效率要比DVB-S高30%。

DVB-S2 is the next generation standard of the digital satellite broadcasting , which adopts the more effective technique of channel coding and self-adapting code modulation , 30 % higher transmission efficiency than DVB-S.

详述数字电视DVB-T标准，MPEG-2TS传输码流的形成；专门针对地面传播的信道编码技术和COFDM调制方式。

Summarized the digital TV 's international development , depicted digital TV DVB-T criterion and the shape of MPEG-2 TS , the channel code method and COFDM modulation for terrestrial transmission .

在学习纠错编码和交织技术基本理论的基础上，重点分析了DVB-C2标准中的信道编码技术，提出了通用信道编码器的设计和实现方案，并给出了部分参数下各模块的仿真结果。

Then based on learning the basic theory of error correction coding and interleaving techniques , the channel coding technique of DVB-C2 is analyzed . After that , the design and implementation of an universal channel encoder is proposed .