检索结果-内蒙古大学图书馆

EVALUATION OF channel coding, MODULATION AND INTERFERENCE OF DIGITAL ATV TERRESTRIAL TRANSMISSION-SYSTEMS

IEEE TRANSACTIONS ON BROADCASTING 1994年第2期40卷 75-81页

作者： WU, YY LEDOUX, B CARON, B Communications Rcscarch Centre Ottawa ONT Canada

This paper presents results of computer simulations and laboratory tests to investigate various digital techniques (i.e., trellis coded QAM, vestigial sideband (VSB) modulation, orthogonal frequency division multiplexing (OFDM), and adaptive equalization) proposed for Advanced Television (ATV) terrestrial broadcasting. The performance of these channel coding and modulation techniques, in the presence of various interferences (i.e., Gaussian noise, ATV and NTSC co-channel interference) and in a multipath distortion environment, is evaluated and compared. The effects of ATV interference into NTSC systems are also investigated.

关键词： amplitude modulation digital communication systems equalisers frequency division multiplexing high definition television random noise television broadcasting television interference trellis codes Gaussian noise NTSC OFDM VSB adaptive equalization advance Orthogonal frequency division multiplexing television interference Frequency division multiplexing advance Equalizers Gaussian noise Digital communication systems amplitude modulation random noise adaptive equalization National Television Systems Committee Trellis codes television broadcasting channel coding Television

来源：评论

学校读者我要写书评

暂无评论

Joint Source and channel coding Using Double Polar Codes

引用

IEEE COMMUNICATIONS LETTERS 2021年第9期25卷 2810-2814页

作者： Dong, Yanfei Niu, Kai Dai, Jincheng Wang, Sen Yuan, Yifei Beijing Univ Posts & Telecommun Key Lab Universal Wireless Commun Minist Educ Beijing 100876 Peoples R China

In this letter, a double polar code (D-Polar) for joint source and channel coding (JSCC) is proposed, in which the source compress is implemented by a polar code, the channel error correction is performed by a systematic polar code. Furthermore, a turbo-like belief propagation (TL-BP) decoder consisted of a channel BP decoder and a source BP decoder is proposed for joint source and channel decoding in the receiver. In this TL-BP decoder, the soft information is exchanged between the channel BP decoder and the source BP decoder so as to improve the efficiency of channel decoding in utilizing the source information residual in the compressed bits. Simulation results show that the performance of the proposed D-Polar JSCC scheme with TL-BP decoder is significantly improved compared with the existing source-channel joint polarization scheme.

关键词： Decoding Polar codes Systematics Iterative decoding channel coding Source coding Simulation Joint source and channel coding double polar codes turbo-like belief propagation decoder

来源：评论

学校读者我要写书评

暂无评论

Non-redundant VQ channel coding using tabu search strategy

引用

ELECTRONICS LETTERS 1996年第17期32卷 1545-1546页

作者： Pan, JS Chu, SC NATL KAOHSIUNG INST TECHNOL DEPT IND ENGN & MANAGEMENTKAOHSIUNG 80782TAIWAN

The tabu search approach is applied to codevector index assignment for noisy channels for the purpose of minimising the distortion due to bit errors without introducing any redundancy. Experimental results demonstrate the robustness of this approach compared with the standard parallel genetic algorithm and the binary switching algorithm.

关键词： vector quantisation channel coding

来源：评论

学校读者我要写书评

暂无评论

Multivaluedness in Networks: Shannon's Noisy-channel coding Theorem

引用

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS 2021年第10期68卷 3234-3235页

作者： van Wyk, Michael Anton(ie) Ping, Li Chen, Guanrong Univ Witwatersrand Sch Elect & Informat Engn ZA-2000 Johannesburg South Africa City Univ Hong Kong Dept Elect Engn Hong Kong Peoples R China

Recently, a necessary and sufficient condition for multivaluedness to be implicitly exhibited by counter-cascaded systems was presented. Subsequently, several systems that exhibit multivaluedness were reported. This brief interprets a general information transmission system as a counter-cascaded system with Shannon's noisy-channel coding theorem, providing a sufficient but not necessary condition for single-valuedness.

关键词： channel coding Noise measurement Reliability theory Error probability Entropy Signal to noise ratio Urban areas Counter-cascaded systems immanence multivaluedness Shannon's noisy-channel coding theorem transcendence

来源：评论

学校读者我要写书评

暂无评论

Hybrid ARQ with cross-packet channel coding

引用

IEEE COMMUNICATIONS LETTERS 2007年第5期11卷 434-436页

作者： Hausl, Christoph Chindapol, Aik Tech Univ Munich Inst Commun Engn Munich Germany Siemens Corp Res Princeton NJ USA

We describe hybrid automatic repeat request/ forward error correction (H-ARQ) with cross-packet channel coding which extends current H-ARQ schemes for point-to-point communications. In contrast to current H-ARQ schemes, the transmission of two consecutive packets of information bits is considered jointly. If a retransmission for the first packet is necessary, we encode the first and a second packet jointly. For fading channels, this allows diversity gain from retransmissions without decreasing the total code rate. We describe an encoder and a decoder which can be decoded iteratively for a system with H-ARQ with cross-packet channel coding.

关键词： hybrid ARQ channel coding fading channels

来源：评论

学校读者我要写书评

暂无评论

Duality Between Source coding With Quantum Side Information and Classical-Quantum channel coding

引用

IEEE TRANSACTIONS ON INFORMATION THEORY 2022年第11期68卷 7315-7345页

作者： Cheng, Hao-Chung Hanson, Eric P. Datta, Nilanjana Hsieh, Min-Hsiu Natl Taiwan Univ Dept Elect Engn Grad Inst Commun Engn Taipei 106 Taiwan Natl Taiwan Univ Dept Math Inst Appl Math Sci Taipei 106 Taiwan Natl Taiwan Univ Ctr Quantum Sci & Engn Taipei 106 Taiwan Hon Hai Foxconn Quantum Comp Ctr New Taipei 23680 Taiwan Univ Cambridge Dept Appl Math & Theoret Phys Cambridge CB3 0WA England Univ Paris Sud Dept Math F-91440 Bures Sur Yvette France

In this paper, we establish an interesting duality between two different quantum information-processing tasks, namely, classical source coding with quantum side information, and channel coding over classical-quantum channels. The duality relates the optimal error exponents of these two tasks, generalizing the classical results of Ahlswede and Dueck [IEEE Trans. Inf. Theory, 28(3):430-443, 1982]. We establish duality both at the operational level and at the level of the entropic quantities characterizing these exponents. For the latter, the duality is given by an exact relation, whereas for the former, duality manifests itself in the following sense: an optimal coding strategy for one task can be used to construct an optimal coding strategy for the other task. Along the way, we derive a bound on the error exponent for classical-quantum channel coding with constant composition codes which might be of independent interest. Finally, we consider the task of variable-length classical compression with quantum side information, and a duality relation between this task and classical-quantum channel coding can also be established correspondingly. Furthermore, we study the strong converse of this task, and show that the strong converse property does not hold even in the i.i.d. scenario.

关键词： Codes channel coding Decoding Source coding Task analysis Protocols Quantum state Duality classical-quantum channel coding quantum side information error exponent strong converse Slepian-Wolf coding

来源：评论

学校读者我要写书评

暂无评论

Recent Advances in Deep Learning for channel coding: A Survey

IEEE OPEN JOURNAL OF THE COMMUNICATIONS SOCIETY

引用

IEEE OPEN JOURNAL OF THE COMMUNICATIONS SOCIETY 2024年 5卷 6443-6481页

作者： Matsumine, Toshiki Ochiai, Hideki Yokohama Natl Univ Inst Adv Sci Yokohama 2408501 Japan Osaka Univ Grad Sch Engn Osaka 5650871 Japan

This paper provides a comprehensive survey of recent advances in deep learning (DL) techniques for channel coding problems. Inspired by the recent successes of DL in a variety of research domains, its applications to physical layer technologies have been extensively studied in recent years, and they are expected to be a potential breakthrough in supporting the emerging use cases of the next generation wireless communication systems such as 6G. In this paper, we focus exclusively on channel coding problems and review existing approaches that incorporate advanced DL techniques into code design and channel decoding. After briefly introducing the background of recent DL techniques, we categorize and summarize a variety of approaches, including model-free and model-based DL, for the design and decoding of modern error-correcting codes, such as low-density parity check (LDPC) codes and polar codes, to highlight their potential advantages and challenges. Finally, the paper concludes with a discussion of open issues and future research directions in channel coding.

关键词： Decoding Physical layer Codes channel coding Surveys Reviews Neural networks Graphics processing units Communication systems Machine learning deep learning (DL) low-density parity check (LDPC) codes machine learning (ML) neural network polar codes turbo codes

来源：评论

学校读者我要写书评

暂无评论

Constellation Design for Deep Joint Source-channel coding

引用

IEEE SIGNAL PROCESSING LETTERS 2022年 29卷 1442-1446页

作者： Wang, Mengyang Li, Jiahui Ma, Mengyao Fan, Xiaopeng Harbin Inst Technol Sch Comp Sci Harbin 150001 Peoples R China Huawei Wireless Technol Lab Shenzhen 518129 Peoples R China

Deep learning-based joint source-channel coding (JSCC) has shown excellent performance in image and feature transmission. However, the output values of the JSCC encoder are continuous, which makes the constellation of modulation complex and dense. It is hard and expensive to design radio frequency chains for transmitting such full-resolution constellation points. In this paper, two methods of mapping the full-resolution constellation to finite constellation are proposed for real system implementation. The constellation mapping results of the proposed methods correspond to regular constellation and irregular constellation, respectively. We apply the methods to existing deep JSCC models and evaluate them on AWGN channels with different signal-to-noise ratios (SNRs). Experimental results show that the proposed methods outperform the traditional uniform quadrature amplitude modulation (QAM) constellation mapping method by only adding a few additional parameters.

关键词： Quadrature amplitude modulation Quantization (signal) channel coding Receivers Computational modeling Clustering algorithms Backpropagation Constellation design constellation mapping methods deep joint source-channel coding

来源：评论

学校读者我要写书评

暂无评论

Joint design of adaptive channel coding and cell scheduling for wireless ATM

引用

ELECTRONICS LETTERS 2000年第6期36卷 549-551页

作者： Lau, VKN Kwok, YK Univ Hong Kong Dept Elect & Elect Engn Hong Kong Hong Kong Peoples R China

A novel packet scheduling algorithm for multimedia wireless ATM systems is proposed. The physical layer and packet scheduling layer are investigated. The physical layer (channel encoder) is responsible for protecting the ATM cells over the hostile radio channel while the ATM scheduler is responsible for allocating limited resources to the ATM cells for each virtual connection so as to meet the specified QoS requirements. The novelty of the scheme comes from the concept of joint design between the two layers. The mechanism of bi-directional interactions between the two layers is illustrated, taking into account time varying channel conditions. It is found that a significant performance improvement in the cell loss rate (CLR) and the mean cell delay (MCD) could be achieved for systems exploiting the joint design.

关键词： adaptive channel coding packet scheduling layer channel coding mean cell delay quality of service cell scheduling Communication switching packet switching physical layer Codes wireless ATM bi-directional interactions hostile radio channel joint design packet scheduling algorithm scheduling QoS requirements asynchronous transfer mode time varying channel conditions time-varying channels virtual connection cell loss rate adaptive codes

来源：评论

学校读者我要写书评

暂无评论

Generalized Adaptive Network Coded Cooperation (GANCC): A Unified Framework for Network coding and channel coding

引用

IEEE TRANSACTIONS ON COMMUNICATIONS 2011年第11期59卷 2934-2938页

作者： Bao, Xingkai Li, Jing Lehigh Univ Dept Elect & Comp Engn Bethlehem PA 18015 USA

Previous work introduced the idea of matching network codes with network graphs to handle the network dynamics. This paper further integrates channel coding in the adaptive network coding framework through an elegant treatment of circulant shifting. Several code constructions are developed. Theoretical analysis and simulations show that the resultant generalized adaptive network coded cooperation (GANCC) is simple, adaptive, distributive, and capable of remarkable coding gains even with a very small number of cooperating users.

关键词： User cooperation network coding channel coding low-density parity-check (LDPC) codes density evolution

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：