检索结果-内蒙古大学图书馆

14th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob)

作者： Coutaud, Ulysse Tourancheau, Bernard Semtech Corp Grenoble France Grenoble Alps Univ CNRS LIG Grenoble France

ISBN: (纸本)9781538668764

In the Internet of Things, Packet Delivery Ratio and Time on Air are two predominant characteristics for both applications and operators, especially while using transmissions over Low Power Wide Area Networks such as LoRa (TM). Our channel coding approach aims to imyrove these Quality of Service characteristics for LoRaWAN (TM) networks. Our CCARR protocol uses Reed-Solomon FEC and structures successive frames into segments. A completion acknowledgements dynamically controls the amount of FEC overload. We estimate the potential gain of CCARR with a probabilistic analysis. Simulation and of-the-shelves testbed experiments of the protocol corroborate analysis trends and show a large Packet Delivery Rate improvement over LoRaWAN (TM) and the literature with a controlled Time on Air increase due to optimized FEC overload.

关键词： IoT LoRa (TM) LoRaWAN (TM) LPWAN channel coding QoS ToA PDR FEC Reed Solomon codes

来源：评论

学校读者我要写书评

暂无评论

channel coding and Interleaver for Secure Wireless Sensor Networks

Channel Coding and Interleaver for Secure Wireless Sensor Ne...

引用

IEEE Wireless Communications and Networking Conference

作者： Liang, Qilian Wang, Lingming Univ Texas Arlington Dept Elect Engn Arlington TX 76019 USA

ISBN: (纸本)9781424402694;9781424402700

In wireless sensor networks, security and energy efficiency are two important topics. In multipath routing, threat can come from compromised nodes, which might relay incorrect information (packet) to the next node during routing. Detection of such incorrect information is very difficult. In this paper, we propose a Secure and Energy Efficient Multipath-routing (SEEM) scheme aided with channel coding and interleaver. The M-path in multipath routing are selected using existing routing algorithm and fuzzy logic system considering the average remaining battery capacity and mobility of associated nodes. Simulation results show that even if certain paths are compromised, the receiver node is still able to recover the transmitted message from errors with very low bit error rate.

关键词： Wireless sensor networks security multipath routing energy efficiency channel coding

来源：评论

学校读者我要写书评

暂无评论

Joint and tandem source-channel coding with complexity and delay constraints

引用

IEEE TRANSACTIONS ON COMMUNICATIONS 2003年第5期51卷 757-766页

作者： Lim, J Neuhoff, DL Univ Michigan Dept Elect Engn & Comp Sci Ann Arbor MI 48109 USA

Two common source-channel coding strategies, joint and tandem, are compared on the basis of distortion versus complexity and distortion versus delay by analyzing specific representatives of each when transmitting analog data samples across a binary symmetric channel. channel-optimized transform coding is the joint source-channel strategy;transform coding plus Reed-Solomon coding is the tandem strategy. For each strategy, formulas for the mean-squared error, computational complexity, and delay are found and used to minimize distortion subject to constraints on complexity and delay, for source data modeled as Gauss-Markov. The results of such optimizations suggest there is a complexity threshold such that when the number of operations per data sample available for encoding and decoding is greater than this threshold, tandem coding is better, and when less, channel-optimized transform coding is better. Similarly, the results suggest there is also a delay threshold such that tandem coding is better than joint when only when the permissible encoding and decoding delay is greater than this threshold.

关键词： channel coding channel-optimized source coding complexity threshold delay threshold Reed-Solomon (RS) coding source coding transform coding

来源：评论

学校读者我要写书评

暂无评论

On Exact Asymptotics of the Error Probability in channel coding: Symmetric channels

引用

IEEE TRANSACTIONS ON INFORMATION THEORY 2021年第2期67卷 844-868页

作者： Altug, Yucel Wagner, Aaron B. Natera Inc San Carlos CA 94070 USA Cornell Univ Sch Elect & Comp Engn Ithaca NY 14853 USA

The exact order of the optimal sub-exponentially decaying factor in the classical bounds on the error probability of fixed-length codes over a Gallager-symmetric discrete memoryless channel with and without ideal feedback is determined for rates above the critical rate. Regardless of the availability of feedback, it is shown that the order of the optimal sub-exponential factor exhibits a dichotomy. Moreover, the proof technique is used to establish the third-order term in the normal approximation for symmetric channels, where a similar dichotomy is shown to exist.

关键词： Error probability Reliability Random variables Standards channel coding Decoding Conferences channel coding error exponents exact asymptotics reliable communication symmetric channels

来源：评论

学校读者我要写书评

暂无评论

Two-Way Source-channel coding

引用

IEEE TRANSACTIONS ON INFORMATION THEORY 2021年第10期67卷 6507-6524页

作者： Weng, Jian-Jia Alajaji, Fady Linder, Tamas Natl Taiwan Ocean Univ Dept Elect Engn Keelung 202301 Taiwan Queens Univ Dept Math & Stat Kingston ON K7L 3N6 Canada

We propose an adaptive lossy joint source-channel coding (JSCC) scheme for sending correlated sources over two-terminal discrete-memoryless two-way channels (DM-TWCs). The main idea is to couple the independent operations of the terminals via an adaptive coding mechanism, which can mitigate cross-interference resulting from simultaneous channel transmissions and concurrently exploit the sources' correlation to reduce the end-to-end reconstruction distortions. Our adaptive JSCC scheme not only subsumes existing lossy coding methods for two-way simultaneous communication but also improves their performance. Furthermore, we derive outer bounds for our two-way lossy transmission problem and establish complete JSCC theorems in some special settings. In these special cases, a non-adaptive separate source-channel coding (SSCC) scheme achieves the optimal performance, thus simplifying the design of the source-channel communication system.

关键词： channel coding Source coding Protocols Propagation losses Adaptive coding Distortion Noise measurement Network information theory two-way channels lossy transmission joint source-channel coding correlated sources hybrid analog and digital coding superposition coding adaptive coding

来源：评论

学校读者我要写书评

暂无评论

Reordered Exponential Golomb Error Correction Code for Universal Near-Capacity Joint Source-channel coding

引用

IEEE ACCESS 2023年 11卷 93619-93634页

作者： Hamilton, Alexander El-Hajjar, Mohammed Maunder, Robert G. Univ Southampton Dept Elect & Comp Sci Southampton SO17 1BJ Hants England

Joint Source-channel coding (JSCC) is a powerful technique that allows for the efficient transmission of information by simultaneously considering the characteristics of both the source and the channel. The recently proposed Exponential Golomb Error Correction (ExpGEC) and Rice Error Correction (REC) codes provide generalized JSCC schemes for the near capacity coding of symbols drawn from large or infinite alphabets. Yet these require impractical decoding structures, with large buffers and inflexible system design, this was mitigated by the introduction of the Reordered Elias Gamma Error Correction (REGEC) which itself had limited flexibility with regards to source distribution. In this paper, we propose a novel Reordered Exponential Golomb Error Correction (RExpGEC) coding scheme, which is a JSCC technique designed for flexible and practical near-capacity performance. The proposed RExpGEC encoder and decoder are presented and its performance is analysed using Extrinsic Information Transfer (EXIT) charts. The flexibility of the RExpGEC is shown via the novel trellis encoder and decoder design. Finally, the Symbol Error Rate (SER) performance of RExpGEC code is compared when integrated into the novel RExpGEC-URC-QPSK scheme against other comparable JSCC and Separate Source channel coding (SSCC) benchmarkers. Specifically the RExpGEC-URC-QPSK scheme is compared against the REGEC-URC-QPSK scheme, and a serial concatenation of the Exponential Golomb and Convolution Code, which becomes the novel Exp-CC-URC-QPSK scheme. Our simulation results demonstrate the performance gains and flexibility of the proposed RExpGEC-URC-QPSK scheme against the benchmarkers in providing reliable and efficient communications. Specifically, the RExpGEC-URC-QPSK scheme outperforms the SSCC in a uncorrelated Rayleigh fading channel by 2 to 3.6 dB (dependent on source distribution). Furthermore, the RExpGEC-URC-QPSK scheme consistently operates within 2.5 dB of channel capacity when measuring Eb

关键词： channel coding joint source-channel coding (JSCC) reordered exponential Golomb source coding

来源：评论

学校读者我要写书评

暂无评论

Trends in channel coding for 6G

引用

PROCEEDINGS OF THE IEEE 2024年第7期112卷 653-675页

作者： Miao, Sisi Kestel, Claus Johannsen, Lucas Geiselhart, Marvin Schmalen, Laurent Balatsoukas-Stimming, Alexios Liva, Gianluigi Wehn, Norbert ten Brink, Stephan Karlsruhe Inst Technol KIT Commun Engn Lab D-76187 Karlsruhe Germany Univ Kaiserslautern Landau Div Microelect Syst Design D-67663 Kaiserslautern Germany Hsch Koblenz D-56075 Koblenz Germany Univ Stuttgart Inst Telecommun D-70569 Stuttgart Germany Eindhoven Univ Technol Signal Proc Syst Grp NL-5600 MB Eindhoven Netherlands German Aerosp Ctr DLR Inst Commun & Nav D-82234 Wessling Germany

Error correction coding (i.e., channel coding) is a key ingredient of any digital communications system. In mobile wireless communications, channel codes have evolved from simple convolutional codes in Global System for Mobile Communications (GSM) (2G), parallel concatenated (turbo) codes in Universal Mobile Telecommunications Service (UMTS) (3G), and long-term evolution (LTE) (4G), to carefully designed multirate/multilength low-density parity-check (LDPC) codes in 5G, combined with polar codes for short messages on the synchronization channel. Based on this rich history, and by accounting for the technological advances in very large-scale integration, this article will outline some recent trends in channel coding as they may be applied in 6G systems, ranging from novel approaches for short blocklengths such as automorphism ensemble decoding, via ideas of coding for multiple access, to concepts for unified coding schemes that may simplify encoding/decoding hardware at competitive error-correcting performance.

关键词： Codes Iterative decoding Turbo codes Information theory Wireless communication 6G mobile communication Standards 6G channel coding wireless communications

来源：评论

学校读者我要写书评

暂无评论

Divergence Radii and the Strong Converse Exponent of Classical-Quantum channel coding With Constant Compositions

引用

IEEE TRANSACTIONS ON INFORMATION THEORY 2021年第3期67卷 1668-1698页

作者： Mosonyi, Milan Ogawa, Tomohiro Budapest Univ Technol & Econ MTA BME Lendulet Quantum Informat Theory Res Grp H-1111 Budapest Hungary Budapest Univ Technol & Econ Inst Math H-1111 Budapest Hungary Univ Electrocommun Grad Sch Informat & Engn Tokyo 1828585 Japan

There are different inequivalent ways to define the Renyi capacity of a channel for a fixed input distribution. In [IEEE Transactions on Information Theory, 41(1):26-34, 1995], Csiszar has shown that for classical discrete memoryless channels there is a distinguished such quantity that has an operational interpretation as a generalized cutoff rate for constant composition channel coding. We show that the analogous notion of Renyi capacity, defined in terms of the sandwiched quantum Renyi divergences, has the same operational interpretation in the strong converse problem of constant composition classical-quantum channel coding.

关键词： channel coding Information processing Mutual information Probability distribution channel capacity Standards Cost function channel capacity classical-quantum channels constant composition codes Ré nyi divergences

来源：评论

学校读者我要写书评

暂无评论

Optimizing the co-design of message structure and channel coding to reduce the TTD for a Galileo 2nd generation signal

引用

NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION 2020年第3期67卷 469-489页

作者： Ortega, Lorenzo Poulliat, Charly Boucheret, Marie Laure Aubault-Roudier, Marion Al-Bitar, Hanaa TeSA Toulouse France Univ Toulouse Toulouse France CNES Toulouse France Thales Alenia Space Toulouse France

Recently, the joint design of the GNSS message structure and the associated channel-coding scheme have been investigated as a means to reduce the Time-To-First-Fix (TTFF) and particularly the time to retrieve the Clock and Ephemerides Data (CED). In this context, a new method to co-design the navigation message and the channel-coding scheme structure is proposed in this paper. This new co-design enables us to reduce the time to retrieve the CED while enhancing error-correction capabilities under degraded channel conditions. In order to fulfill such requirements, some structured coding schemes are designed, which provide both maximum distance separable (MDS) and full diversity properties under a non-ergodic channel assumption.

关键词： channel coding

来源：评论

学校读者我要写书评

暂无评论

Wireless High-Performance Communications Improving Effectiveness and Creating Ultrahigh Reliability with channel coding

引用

IEEE INDUSTRIAL ELECTRONICS MAGAZINE 2018年第3期12卷 32-37页

作者： Zhan, Ming Pang, Zhibo Xiao, Ming Luvisotto, Michele Dzung, Dacfey Southwest Univ Coll Elect & Informat Engn Chongqing Peoples R China ABB Corp Res Ctr Vasteras Sweden Royal Inst Technol Stockholm Sweden KTH Stockholm Sweden Tsinghua Univ Beijing Peoples R China Zhejiang Univ Hangzhou Zhejiang Peoples R China Beijing Univ Posts & Telecommun Beijing Peoples R China Royal Inst Technol Commun Theory Sch Elect Engn & Comp Sci Stockholm Sweden ABB Corp Res Ind & Util Commun Baden Switzerland

To meet a set of stringent requirements for wireless control in critical applications, the described wireless high-performance (WirelessHP) communication system represents a breakthrough regarding microsecond-level latency, but the proof of ultrahigh reliability is still lacking. To this aim, we propose the incorporation of channel coding in its physical layer. Building on a customized protocol stack and a hardware demonstrator, we prove the effectiveness of channel coding and suggest further research in this area.

关键词： channel coding OFDM Wireless communication Standards Wireless sensor networks Transmitters Interference

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：