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Автор: Grafiati
Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Transmission of codes"

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P, Shahnas. "Performance Analysis of Regular and Irregular LDPC Codes on SPIHT Coded Image Data." International Journal of Computer Communication and Informatics 2, no. 2 (October 30, 2020): 1–5. http://dx.doi.org/10.34256/ijcci2021.

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The LDPC (Low Density Parity Check Code) has Shown interesting results for transmitting embedded bit streams over noisy communication channels. Performance comparison of regular and irregular LDPC codes with SPIHT coded image is done here. Different Error Sensitive classes of image data are obtained by using SPIHT algorithm as an image coder. Irregular LDPC codes map the more important class of data into a higher degree protection class to provide more protection. Different degree protection classes of an LDPC code improves the overall performance of data transmission against channel errors. Simulation results show the superiority of irregular LDPC over regular LDPC codes.
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2

Peng, Xiao Feng, Yi Yang, Chuan Yang, and Kai Li Wang. "Research on Data Transmission Technology Based on Raptor Code in Wireless Sensor Networks." Applied Mechanics and Materials 442 (October 2013): 538–43. http://dx.doi.org/10.4028/www.scientific.net/amm.442.538.

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Wireless sensor network is a data centric distributed self-organizing network. The transmission of data is the most important task of it. It is a topic worthy of study that how to ensure the reliability of data transmission in any environment .Fountain codes algorithm is simple, and has no ratio. It is very suitable for coding scheme for Wireless Sensor Networks. This paper mainly studies the Fountain codes of Raptor codes in wireless sensor network data transmission technology, and gives the concrete scheme and implementation ways. The application of this technology can improve the reliability of data transmission and transmission efficiency. It overcome the problems of very large packet error codec technology traditional rate and the decoding success rate.
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3

Fujita, Shingo, Eiji Okamoto, Hideki Takenaka, Hiroyuki Endo, Mikio Fujiwara, Mitsuo Kitamura, Ryosuke Shimizu, Masahide Sasaki, and Morio Toyoshima. "Polar-Coded Transmission over 7.8-km Terrestrial Free-Space Optical Links." Photonics 10, no. 4 (April 17, 2023): 462. http://dx.doi.org/10.3390/photonics10040462.

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Free-space optical (FSO) communications can offer high-capacity transmission owing to the properties of the laser beams. However, performance degradation caused by atmospheric turbulence is an urgent issue. Recently, the application of polar codes, which can provide capacity-achieving error-correcting performance with low computational cost for decoding, to FSO communications has been studied. However, long-distance and real-field experiments have not been conducted in these studies. To the best of our knowledge, this study is the first to present the experimental results of polar-coded transmission over 7.8-km FSO links. Using experimental data, we investigated the performance of polar codes over atmospheric channels, including their superiority to regular low-density parity-check codes. We expect that our results will offer a path toward the application of polar codes in high-speed optical communication networks including satellites.
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4

Krylova, Victoria, Elena Tverytnykova, Oleg Vasylchenkov, and Tatyana Kolisnyk. "PUNCTURED NCC CODES FOR INFORMATION PROTECTION IN INFORMATION AND MEASUREMENT SYSTEMS." Bulletin of the National Technical University «KhPI» Series: New solutions in modern technologies, no. 1(11) (May 18, 2022): 38–43. http://dx.doi.org/10.20998/2413-4295.2022.01.06.

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During development and design of information-measuring systems, enabling to carry out collection, processing and transmission of information, one of the main problems is the choice of effective methods of information protection against defects in noisy communication channels. Effective use of frequency-time resources of information communication channels, as the most valuable part of the information transmission system, is the key to provide reliable delivery of transmitted messages. One of effective directions of reliability increase and information transfer reliability in information-measuring communication networks is implementation of methods and algorithms of noise-resistant coding, providing for detection and coping with errors, arising due to interferences in the communication channel. In this case, the choice in favor of one or another coding method depends on the information characteristics of the data channel. Parameters of the noise coder must be coordinated with the source of the message, the communication channel, as well as the requirements for the reliability of bringing information to the recipient. The problem of obtaining a wide range of codec parameters with simultaneous preservation of the unified macrostructure of the codec in communication systems causes the need for research on the development of adaptive algorithms for error information protection. In the article the research results of the characteristics of variable rate slot convolutional codes for adaptive coding/decoding in information-measuring systems of information transmission are proposed. Consequently, when creating communication networks, there is no need to use a large number of different codecs, even with completely different requirements to the code rate, channel rate and gain due to coding. In addition, there is a real opportunity to create terminal equipment, working on unified algorithms of protection against errors and access.
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Hirner, Tomáš, Peter Farkaš, and Srečko Krile. "One Unequal Error Control Method for Telemetric Data Transmission." Journal of Electrical Engineering 62, no. 3 (May 1, 2011): 158–62. http://dx.doi.org/10.2478/v10187-011-0026-y.

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One Unequal Error Control Method for Telemetric Data TransmissionIn wireless sensor networks (WSN) it is necessary to use very simple codes for transmission of information since the nodes in these networks have usually only limited energy available not only for transmission but also for processing. On the other hand, common codes do not usually take into account the fact that in case of telemetric information the weights of individual orders are not equal and errors in different orders cause different deviations from correct value. In this contribution, new very simple codes for transmission of telemetric information on WSN will be presented, which take into account the above-mentioned requirements. Resulting square deviation will be used as a quality evaluation criterion.
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6

Ding, Min, and Yingda Xu. "Real-Time Wireless Sensor Network-Assisted Smart Tourism Environment Suitability Assessment for Tourism IoT." Journal of Sensors 2021 (December 16, 2021): 1–11. http://dx.doi.org/10.1155/2021/8123014.

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In this paper, we conduct an in-depth study and analysis of the suitability of real-time wireless sensor network-assisted smart tourism environment for tourism IoT and evaluate its suitability. We use nodes in wireless sensor networks as relays and collaborative transmission using mutual information accumulation. Using riteless codes, nodes can accumulate information in advance to decode out the original text. Due to the mobility of mobile robots, the planned routing paths can fail quickly, so we propose a dynamic mutual information accumulation collaborative transmission algorithm. For both cases of information transmission from the cloud to the robot and from the robot to the cloud, we dynamically acquire routing paths using neighbour search and chance transmission, respectively. Experimental results show that our dynamic mutual information accumulation collaborative transfer algorithm has lower time complexity and latency. We use a cooperative transmission algorithm with mutual information accumulation, because wireless transmission has the nature of broadcasting, and all neighbour nodes can receive part of the information when the sender starts to transmit information. Riteless codes are used in single-hop transmissions to improve the probability of successful transmissions. Since transmission failure requires waiting for the next neighbour to wake up, which consumes a lot of energy and time in a low duty cycle environment, using riteless codes to improve the transmission success rate of single-hop transmissions can effectively improve the global transmission efficiency. Experimental results show that the opportunity routing algorithm using riteless codes has lower delay and energy consumption. The two major systems, surface, and underground are used to quantitatively measure 23 indicators in five subsystems, including geological environment, soil and water environment, sensitive geological bodies, groundwater resources, and mineral resources, to evaluate the two-way grade of underground space development suitability, revealing the comprehensive bearing characteristics of the study area with an overall high bearing capacity of underground space resources and environment and an overall surplus of bearing status.
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7

Aguilar Licea, Guadalupe Donaji, and Saul Lazcano Salas. "Multilevel Image Transmission using Polar Codes." Research in Computing Science 148, no. 10 (December 31, 2019): 191–98. http://dx.doi.org/10.13053/rcs-148-10-16.

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8

Fath, Thilo, Falk Schubert, and Harald Haas. "Wireless data transmission using visual codes." Photonics Research 2, no. 5 (September 25, 2014): 150. http://dx.doi.org/10.1364/prj.2.000150.

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9

Noori Ghanim, Zainab, and Fadia Noori Hummadi Al-Nuaimy. "Variable length error correcting code for image in OFDM and PAPR reduction." Indonesian Journal of Electrical Engineering and Computer Science 27, no. 2 (August 1, 2022): 859. http://dx.doi.org/10.11591/ijeecs.v27.i2.pp859-866.

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Data <span>transmission in orthogonal frequency division multiplexing (OFDM) system needs source and channel coding, the transmitted data suffers from the bad effect of large peak to average power ratio (PAPR). Source code and channel codes can be joined using different joined codes. Variable length error correcting code (VLEC) is one of these joined codes. VLEC is used in mat lab simulation for image transmission in OFDM system, different VLEC code length is used and compared to find that the PAPR decreased with increasing the code length. Several techniques are used and compared for PAPR reduction. The PAPR of OFDM signal is measured for image coding with VLEC and compared with image coded by Huffman source coding and Bose-Chaudhuri-Hochquenghem (BCH) channel coding, the VLEC code decreases the data transmitted size and keep the same level of PAPR reduction with respect to data coded by Huffman and BCH code when using PAPR reduction methods.</span>
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10

Wirastuti, N. M. A. E. D., I. M. A. Suyadnya, and D. C. Khrisne. "Performance Assessment of OFDM System using Reed-Solomon Codes over Fading Channels." Journal of Electrical, Electronics and Informatics 2, no. 2 (August 31, 2018): 48. http://dx.doi.org/10.24843/jeei.2018.v02.i02.p06.

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This paper study the performance of Orthogonal Frequency Division Multiplexing (OFDM) system over AWGN and Rayleigh fading channels. OFDM performs multi-carrier transmission where all the subcarriers are orthogonal to each other. The channel coding was applied to improve the OFDM system performance. Reed Solomon (RS) codes was chosen that an efficient channel coding algorithm and has intense error correction ability. Adding the benefits of multicarrier OFDM system and Reed Solomon codes to achieve the expected system performance. The coded OFDM system was modeled over and simulated using Matlab. The bit error rate (BER) and energy bit (Eb) per noise power density (No) was performed during system simulations. QPSK modulation was used to modulate the random bits. From the simulation results It can be seen that BER vs. EB/No parameter for Coded OFDM system lower than uncoded OFDM. This was because RS codes succeed to correcting the error generated along data transmission.
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Дисертації з теми "Transmission of codes"

1

Tanriover, Cagri C. "Improved turbo codes for data transmission." Thesis, Lancaster University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288960.

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2

M'Sir, Mohamed El Amine. "Conception d'architectures rapides pour codes convolutifs en télécommunications : application aux turbo-codes." Metz, 2003. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/2003/Msir.Mohamed.El.Amine.SMZ0315.pdf.

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En télécommunication, l'intégration des services et la diversité des données échangées (voix, vidéo, cellules ATM, etc. ) exigent des systèmes de plus en plus rapides pour traiter des volumes d'information en augmentation constante, tout en conservant des délais d'attente les moins contraignants possibles pour l'utilisateur, ces deux contraintes liées au traitement de l'information s'ajoute la nécessité de protéger les données émises dans des canaux soumis à des bruits perturbateurs. De la qualité du service (QoS) rendu en termes de communication, quelles que soient les conditions de transmission, se dégagent deux mots clés : fiabilité et rapidité. Le travail de cette thèses fait partie d'un projet global mené dans le laboratoire LICM concernant la conception architecturale d'une chaîne de transmission à haut débit et à faible coût. Coût. Ce travail se situe dans le cadre d 'un contrat CIFRE entre le laboratoire LICM et la société 2 MG Communication. L'objectif est de concevoir une architecture rapide pour un système de codage de faible coût et à haut débit permettant une protection optimale des données. Une étude approfondie sur les stratégies de codage canal dans le domaine des télécommunications a été effectuée. Il en ressort que les stratégies FEC (Forward Error Correction) offrent les meilleurs compromis débit/protection. L'emploi de codes convolutifs est l'une des approches F EC les plus répandues : la possibilité de les utiliser, soit comme entités indépendantes soit dans des structures concaténées avec d'autres codes, soit encore comme éléments constituants de turbo-codes( techniques de codage offrant actuellement les meilleurs niveaux de protection), les rend très attractifs. A partir de ce constat, quatre types d'architecture de codeurs convolutifs ainsi qu'une architecture de tubo-codeur ont été développés au niveau RTL et validés sur FPGA. Les résultats obtenus sont compris, pour le codeur convolutif haut débit, entre 1 et 7. 45 Gbits/s pour des degrés de parallélisme 8 et 32, respectivement. Dans le cas du turbo-code,I 'implantation d 'un turbo-codeur à deux niveaux avec un rendement 1/3 a permis d 'atteindre des débits compris entre 1 et 2 Gbits/s et entre 3 et 5 Gbits/s pour des degrés de parallélisme de 8 et 32, respectivement. L'étude a été complétée par le développement d'un décodeur de syndrome pour codes convolutifs,exploitant l'architecture parallèle du codeur haut débit, qui a permis d'atteindre des débits de 4. 78 Gbits/s pour un rendement de 1/2
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3

Jégou, Hervé. "Codes robustes et codes joints source-canal pour transmission multimédia sur canaux mobiles." Rennes 1, 2005. https://tel.archives-ouvertes.fr/tel-01171129.

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Cette thèse propose des codes robustes et des codes conjoint source / canal pour transmettre des signaux multimédia sur des canaux bruités. Nous proposons des codes entropiques offrant une résistance intrinsèque aux données prioritaires. Ces codes sont étendus pour exploiter la dépendance temporelle du signal. Un nouveau modèle d'état est ensuite proposé et analysé pour le décodage souple de codes à longueur variable avec une contrainte de longueur. Il permet de régler finement le compromis performance de décodage/complexité. Nous proposons également de séparer, au niveau du codage entropique, les étapes de production des mots de codes et de paquétisation. Différentes stratégies de construction de train binaire sont alors proposées. Enfin, la représentation en arbre binaire des codes entropiques est étendue en considérant des règles de réécriture. Cela permet d'obtenir en particulier des codes qui offrent des meilleures performances en décodage souple.
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4

Jégou, Hervé Guillemot Christine. "Codes robustes et codes joints source-canal pour transmission multimédia sur canaux mobiles." [S.l.] : [s.n.], 2005. ftp://ftp.irisa.fr/techreports/theses/2005/jegou.pdf.

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5

Bhutto, Tarique Inayat. "Root LDPC Codes for Non Ergodic Transmission Channels." Thesis, Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5938.

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4 ABSTRACT Tremendous amount of research has been conducted in modern coding theory in the past few years and much of the work has been done in developing new coding techniques. Low density parity check (LDPC) codes are class of linear block error correcting codes which provide capacity performance on a large collection of data transmission and storage channels while Root LDPC codes in this thesis work are admitting implementable decoders with manageable complexity. Furthermore, work has been conducted to develop graphical methods to represent LDPC codes. This thesis implement one of the LDPC kind “Root LDPC code” using iterative method and calculate its threshold level for binary and non-binary Root LDPC code. This threshold value can serve as a starting point for further study on this topic. We use C++ as tool to simulate the code structure and parameters. The results show that non-binary Root LDPC code provides higher threshold value as compare to binary Root LDPC code.
postal address: Björnkullaringen 26, LGH 1029 14151 Huddinge Stockholm Sweden. Mobile: +46-720 490 967
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6

Nelson, Christopher J. "Low complexity capacity-approaching codes for data transmission." Thesis, Lancaster University, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.556663.

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This thesis analyzes the design of low complexity capacity approaching codes suitable for data transmission. The research documented in this thesis describes new and novel design methods for three well-known error control coding techniques, Turbo codes, LDPC block codes and LDPC convolutional codes, which are suitable for implementation in a number of modem digital communication systems. Firstly, we present Partial Unit Memory (PUM) based Turbo codes. A variant of Turbo codes which encompasses the advantages of both block and convolutional codes. The design methods of PUM Turbo codes are presented and Bit Error Rate (BER) simulations and Extrinsic Information Transfer (EXIT) chart analysis illustrates their performance. Partial Unit Memory codes are a class of low complexity, non-binary convolutional codes and have been shown to outperform equivalent convolutional codes. We present the EXIT charts of parallel concatenated PUM codes and PUM Woven Turbo Codes and analyse them to assess their performance compared with standard Turbo code designs. Resulting Extrinsic Information Transfer charts indicate that the proposed PUM-based codes have higher mutual information during iterative decoding than the equivalent Recursive, Systematic, Convolutional Turbo codes (RSC- TC) for the same Eb/No, i.e. the output of the decoders provides a better approximation of the decoded bits. The EXIT chart analysis is supported by BER plots, which confirms the behaviour predicted by the EXIT charts. We show that the concatenated PUM codes outperform the well-known turbo codes in the waterfall region, with comparable performance in the error floor region. In the second section we present Low Density Generator Matrix codes; a variant of LDPC codes that have low complexity encoding and decoding techniques. We present results of three construction methods and describe how LDGM codes can be modified to improve the error-floor region. We describe the design of random, structured and semi-random, semi- structured codes and how, by replacing the identity matrix with a staircase matrix, LDGM codes can show significant improvements in the error-floor region. Furthermore, we analyse the performance of serially concatenated LDGM codes and how they can benefit when we use the modified LDGM codes in either the outer code or the inner code. The results indicate that concatenated LDGM codes that incorporate LDGM staircase codes in the inner code will show improvements in error-floor performance while maintaining near capacity limit performances. While in the case of LDGM staircase codes being used as the outer codes no significant improvements in waterfall or error-floor regions are observed compared to a concatenated scheme that employs an LDGM identity outer code. Finally, we propose a new design of LDPC convolutional code, which we term as time invariant Low Density Parity Check Unit Memory (LDPC-UM) codes. The performance of LDPC block and Low Density Parity Check Unit Memory codes are compared, in each case, the Low Density Parity Check Unit Memory codes performance is at least as good as that of the LDPC block codes from which they are derived. LDPC-UM codes are the convolutional counterparts of LDPC block codes. Here, we describe techniques for the design of low complexity time invariant LDPC-UM codes by unwrapping the Tanner graph of algebraically constructed quasi-cyclic LDPC codes. The Tanner graph is then used to describe a pipelined message passing based iterative decoder for LDPC-UM codes and standard LDPC convolutional codes that outputs decoding results continuously.
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7

TORRES, CARLOS MARIO CORREA. "IMAGE TRANSMISSION THROUGH NOISY CHANNELS WITH LT CODES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2009. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=15886@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
Para transmissão da informação de maneira confiável, em canais com apagamento, foram criados os códigos LT (Luby Transform), uma das principais classes de códigos fontanais. Estes códigos não têm uma taxa fixa, em outras palavras, eles têm taxa versátil. Esta dissertação aborda o estudo da transmissão de imagens através de canal ruidoso, AWGN (Aditive White Gaussian Noise), com o uso de Códigos LT. Investigou-se o desempenho usando uma modulação BPSK, dois esquemas foram testados: Um esquema para canal que inclui apagamento (BESC) e um outro que foi proposto usando um código Hamming em série com um código LT. O esquema LT-Hamming apresentou um ganho de código maior que o esquema BESC e o código convolucional de semelhantes características. Foi testado o esquema LT-Hamming para diferentes tipos de imagens em um canal AWGN usando a técnica SPIHT para a compressão das imagens. Para obter uma medida objetiva da qualidade da imagem recuperada foi usado o parâmetro PSNR (Peak Sinal to Noise Ratio) e foram apresentadas algumas imagens com o objetivo de analisar sua qualidade através de uma inspeção visual. Dado que o código LT é versátil para o que diz respeito à taxa de código, foi proposto um método para método para atribuir diferentes níveis de proteção da informação codificada, UEP (Unequal Error Protection).
To transfer reliably information in erasure channels, LT (Luby Transform) codes were created, they are part of the main class of fountain codes, this codes don’t have fixed rate, in other words, they have a versatile code rate. This thesis address to the study of images transmission through noisy channel, AWGN (Aditive White Gaussian Noise) using LT codes. We investigated the performance using a BPSK modulation, two schemes were tested: A scheme of channel that includes deletion (BESC) and another that was proposed, using a Hamming code in series with a LT code. The LT-Hamming scheme present a gain code larger than BESC scheme and convolutional codes of similar characteristics. Was tested LT-Hamming scheme for different types of images on AWGN channel using the SPIHT technique for images compression. To obtain an objective measure of image quality was used the PSNR (Peak Signal Noise Ratio) and some images were presented in order to analize its quality through visual inspection given that LT code is a versatile for what concern the code rate it was proposed a method to assign different protection levels to the code information, UEP (Unequal Error Protection).
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8

Duo, Bin. "Polar Coding Schemes for Cooperative Transmission Systems." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/14619.

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: In this thesis, a serially-concatenated coding scheme with a polar code as the outer code and a low density generator matrix (LDGM) code as the inner code is firstly proposed. It is shown that that the proposed scheme provides a method to improve significantly the low convergence of polar codes and the high error floor of LDGM codes while keeping the advantages of both such as the low encoding and decoding complexity. The bit error rate results show that the proposed scheme by reasonable design have the potential to approach a performance close to the capacity limit and avoid error floor effectively. Secondly, a novel transmission protocol based on polar coding is proposed for the degraded half-duplex relay channel. In the proposed protocol, the relay only needs to forward a part of the decoded source message that the destination needs according to the exquisite nested structure of polar codes. It is proved that the scheme can achieve the capacity of the half-duplex relay channel while enjoying low encoding/decoding complexity. By modeling the practical system, we verify that the proposed scheme outperforms the conventional scheme designed by low-density parity-check codes by simulations. Finally, a generalized partial information relaying protocol is proposed for degraded multiple-relay networks with orthogonal receiver components (MRN-ORCs). In such a protocol, each relay node decodes the received source message with the help of partial information from previous nodes and re-encodes part of the decoded message for transmission to satisfy the decoding requirements for the following relay node or the destination node. For the design of polar codes, the nested structures are constructed based on this protocol and the information sets corresponding to the partial messages forwarded are also calculated. It is proved that the proposed scheme achieves the theoretical capacity of the degraded MRN-ORCs while still retains the low-complexity feature of polar codes.
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9

Raouafi, Fathi. "Adéquation turbo codes/processeurs de signal." Brest, 2001. http://www.theses.fr/2001BRES2010.

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10

Chai, Huiqiong. "Parallel concatenation of regular LDGM codes." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 81 p, 2007. http://proquest.umi.com/pqdlink?did=1251904891&Fmt=7&clientId=79356&RQT=309&VName=PQD.

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Книги з теми "Transmission of codes"

1

Algebraic codes for data transmission. Cambridge, UK: Cambridge University Press, 2003.

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2

Vary, Peter. Digital Speech Transmission. New York: John Wiley & Sons, Ltd., 2006.

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3

Codes for error control and synchronization. Norwood, MA: Artech House, 1988.

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4

B, Wicker Stephen, Bhargava Vijay K. 1948-, IEEE Communications Society, and IEEE Information Theory Society, eds. Reed-Solomon codes and their applications. Piscataway, NJ: IEEE Press, 1994.

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5

Shu, Lin. Multi-dimensional modulation codes for fading channel. [Washington, DC: National Aeronautics and Space Administration, 1991.

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6

Shu, Lin. Multi-dimensional modulation codes for fading channel. [Washington, DC: National Aeronautics and Space Administration, 1991.

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7

A, Thompson Richard. Computer codes for the evaluation of thermodynamic and transport properties for equilibrium air to 30000 K. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1991.

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8

H, Deng Robert, Illinois Institute of Technology. Dept. of Electrical & Computer Engineering, and United States. National Aeronautics and Space Administration, eds. Error control for reliable digital data transmission and storage systems: Final report. Chicago, IL: Dept. of Electrical & Computer Engineering, Illinois Institute of Technology, 1985.

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9

Lithuania. Ryšių ir informatikos ministerija., ed. Lietuvos Respublikos faksimilinio ryšio abonentai. Vilnius: Ministerija, 1991.

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C, Van Oorschot Paul, ed. An introduction to error correcting codes with applications. Boston: Kluwer Academic Publishers, 1989.

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Частини книг з теми "Transmission of codes"

1

Bergmans, Jan W. M. "Baseband Modulation Codes." In Digital Baseband Transmission and Recording, 153–230. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4757-2471-4_4.

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Guimarães, Dayan Adionel. "Notions of Information Theory and Error-Correcting Codes." In Digital Transmission, 689–840. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-01359-1_8.

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Kløve, Torleiv, and Valery I. Korzhik. "Protocols for Information Transmission Systems with Feedback." In Error Detecting Codes, 143–202. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-2309-3_5.

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Tomlinson, Martin, Cen Jung Tjhai, Marcel A. Ambroze, Mohammed Ahmed, and Mubarak Jibril. "Reed–Solomon Codes and Binary Transmission." In Error-Correction Coding and Decoding, 167–79. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-51103-0_7.

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Calderbank, A. R. "Binary covering codes and high speed data transmission." In EUROCODE '90, 319–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/3-540-54303-1_143.

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Yang, Qiushi, and Yvo Desmedt. "General Perfectly Secure Message Transmission Using Linear Codes." In Advances in Cryptology - ASIACRYPT 2010, 448–65. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-17373-8_26.

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Calderbank, A. R., P. C. Fishburn, and A. Rabinovich. "Sequence based methods for data transmission and source compression." In Applied Algebra, Algebraic Algorithms and Error-Correcting Codes, 1–12. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/3-540-56686-4_29.

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Gennero, M. C., and D. Randriananja. "Software simulation of data transmission using error-correcting codes, through an awgn channel." In Algebraic Algorithms and Error-Correcting Codes, 95–107. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/3-540-16776-5_712.

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Chen, Guoqing, Shushi Gu, Ye Wang, Jian Jiao, and Qinyu Zhang. "Systematic Raptor Codes with UEP Property for Image Media Transmission." In Lecture Notes in Electrical Engineering, 402–10. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6504-1_50.

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Wang, Sha, Jian Jiao, Bowen Feng, Shaohua Wu, Shushi Gu, and Qinyu Zhang. "Design of Rateless Transmission Scheme Based on Punctured Polar Codes." In Lecture Notes in Electrical Engineering, 815–22. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-6571-2_99.

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Тези доповідей конференцій з теми "Transmission of codes"

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Liu, Ruoheng, H. Vincent Poor, Predrag Spasojevic, and Yingbin Liang. "Nested codes for secure transmission." In 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC). IEEE, 2008. http://dx.doi.org/10.1109/pimrc.2008.4699910.

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Kurniawan, E., S. Sumei, K. Yen, and K. F. E. Chong. "Network Coded Transmission of Fountain Codes over Cooperative Relay Networks." In Networking Conference (WCNC). IEEE, 2010. http://dx.doi.org/10.1109/wcnc.2010.5506569.

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Willems, F. M. J., and T. Kalker. "Semantic compaction, transmission, and compression codes." In Proceedings. International Symposium on Information Theory, 2005. ISIT 2005. IEEE, 2005. http://dx.doi.org/10.1109/isit.2005.1523325.

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Braginskiy, Evgeniy, Avi Steiner, and Shlomo Shamai. "Oblivious cooperative transmission with multi-layer codes." In 2010 IEEE 26th Convention of Electrical & Electronics Engineers in Israel (IEEEI 2010). IEEE, 2010. http://dx.doi.org/10.1109/eeei.2010.5661928.

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Wu, Jiaji, Xinhong Wu, and L. C. Jiao. "Compressed image transmission based on fountain codes." In Seventh International Symposium on Multispectral Image Processing and Pattern Recognition (MIPPR2011), edited by Zhiguo Cao, Aaron Fenster, Laszlo G. Nyul, and Chao Cai. SPIE, 2011. http://dx.doi.org/10.1117/12.902096.

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Tarable, Alberto. "Burst Erasure Correcting Codes for Carousel Transmission." In 2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC). IEEE, 2018. http://dx.doi.org/10.23919/ursi-at-rasc.2018.8471316.

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"TURBO SPACE TIME CODES FOR TAILBITING TRANSMISSION." In International Conference on Wireless Information Networks and Systems. SciTePress - Science and and Technology Publications, 2007. http://dx.doi.org/10.5220/0002146101400145.

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Wang, Shiheng, Heng Liu, Zheng Ma, and Ming Xiao. "Precoded Batched Sparse Codes Transmission Based on Low-Density Parity-Check Codes." In 2022 IEEE 95th Vehicular Technology Conference (VTC2022-Spring). IEEE, 2022. http://dx.doi.org/10.1109/vtc2022-spring54318.2022.9860907.

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Mihic, B., J. Matejic, S. Subotic, I. Trkulja, and V. Misic. "Network connection codes implementation process." In Mediterranean Conference on Power Generation, Transmission, Distribution and Energy Conversion (MedPower 2016). Institution of Engineering and Technology, 2016. http://dx.doi.org/10.1049/cp.2016.1032.

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Tanriover, C. "Turbo code application to image transmission." In IEE Colloquium. Turbo Codes in Digital Broadcasting - Could it Double Capacity? IEE, 1999. http://dx.doi.org/10.1049/ic:19990797.

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Звіти організацій з теми "Transmission of codes"

1

Shires, Theresa M., and Matthew R. Harrison. GRI-98-0367.1 Development of the B31.8 Code and Federal Pipeline Safety Regulations. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), December 1998. http://dx.doi.org/10.55274/r0011812.

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Анотація:
This report documents the intentions and founding principles of the ASME B3 l .8 Gas Transmission and Distribution Piping Systems Codes and the Pipeline Safety Regulations (Title 49 Code of Federal Regulations Part 192). Two meetings were held with distinguished pipeline experts and the first directors of the Office of Pipeline Safety to provide background information on the development of the Codes and Regulations. The focus of this effort was natural gas transmission pipeline operations. This report also addresses five major topics of interest to the U.S. transmission pipeline industry: establishing the threshold for operating pressure, class location areas, valve spacing, inspection frequencies, and public communications. Through an understanding of the Code and regulatory foundations, the pipeline industry can more effectively interpret and apply the requirements and recommendations to today's natural gas pipelines. In addition, the industry can use this information to support continued public benefit, improved safety, and industry growth.
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Warke, R. W., and C. Ferregut. L51779 Reliability-Based Fitness for Service Assessment of Welds. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), June 1998. http://dx.doi.org/10.55274/r0010389.

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Requirements for the fabrication and inspection of transmission pipeline girth welds are given in national codes such as API 1104, CSA Z662, and BS 4515. Their objective is to ensure an acceptable level of quality, and implicitly, operational safety. They seek to achieve this by imposing workmanship standards which prescribe the allowable size and frequency of various discontinuities. These standards are largely arbitrary and thus highly conservative in most situations. However, the potential for economic benefit, an increasing demand for safety, and the development of fracture mechanics technology have motivated the inclusion of optional fitness-for-service (FFS)-based flaw acceptance criteria. Two major objectives of the present work were to educate those unfamiliar with structural reliability concepts, particularly as they apply to pipeline integrity, and review the worldwide codification of LRFD for industries that fabricate and maintain welded structures. The final objective was to develop a library of PSFs for pipeline girth weld flaw assessment thereby aligning girth weld fitness-for-service assessment procedures with emerging LRFD codes for transmission pipelines.
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3

Gillette, J. L., and R. L. Kolpa. ANL-08-02 Overview of Interstate Hydrogen Pipeline Systems. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), November 2007. http://dx.doi.org/10.55274/r0011902.

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Design requirements for hydrogen pipelines are still evolving. Although there are several hundred miles of hydrogen pipelines throughout the world, most hydrogen pipelines are designed to transport hydrogen only short distances, from the production facility to the end-user. Many such applications typically represent only a few hundred feet of pipeline and operate with maximum pressures of considerably less than the 1,000 psi absolute (psia) or more that would likely be required for long-distance pipeline transmission of hydrogen. The safety record for these pipelines is considered to be very good. This safe history notwithstanding, the definition of required safety margins, codes, and standards for application to large-scale hydrogen transport remains a work in progress. It is therefore not possible at this time to definitively specify the design details of hydrogen transmission pipelines. However, based on the design parameters of some hydrogen pipelines and on experience with natural gas pipelines, it is reasonable to suggest some design parameters that could very well be applicable to the flow rates, distances, and pressures associated with the long-distance transmission of hydrogen via pipeline.
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4

Dawson, William O., Moshe Bar-Joseph, Charles L. Niblett, Ron Gafny, Richard F. Lee, and Munir Mawassi. Citrus Tristeza Virus: Molecular Approaches to Cross Protection. United States Department of Agriculture, January 1994. http://dx.doi.org/10.32747/1994.7570551.bard.

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Citrus tristeza virus (CTV) has the largest genomes among RNA viruses of plants. The 19,296-nt CTV genome codes for eleven open reading frames (ORFs) and can produce at least 19 protein products ranging in size from 6 to 401 kDa. The complex biology of CTV results in an unusual composition of CTV-specific RNAs in infected plants which includes multiple defective RNAs and mixed infections. The complex structure of CTV populations poses special problems for diagnosis, strain differentiation, and studies of pathogenesis. A manipulatable genetic system with the full-length cDNA copy of the CTV genome has been created which allows direct studies of various aspects of the CTV biology and pathology. This genetic system is being used to identify determinants of the decline and stem-pitting disease syndromes, as well as determinants responsible for aphid transmission.
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5

Kiefner, Maxey, and Eiber. L51607 Pipeline Coating Impedance Effect on Powerline Fault Current Coupling. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), January 1989. http://dx.doi.org/10.55274/r0010294.

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Prior research leading to the development of predictive electromagnetic coupling computer codes has shown that the coating conductance is the principal factor in determining the response of a pipeline to magnetic induction transmission line. Under power line fault conditions, a high voltage may stress the coating causing a significant change in its conductance, and hence, the coupling response. Based upon laboratory experimentation and analysis, a model has been developed which allows prediction of the modified coating characteristics when subjected to high voltages during fault situations. The program objective was the investigation of a method to determine the high voltage behavior of an existing coating from low voltage in-situ field measurements. Such a method appeared conceptually feasible for non-porous coatings whose conductance is primarily a result of current leakage through existing holidays. However, limited testing has shown that difficulties in determining the steel-electrolyte capacitance limit the application of the method. Methods for field measurement of the pipeline coating conductance were studied for both DC and AC signal excitation. AC techniques offer the advantage that cathodic protection current interruption is not required, thus eliminating depolarization effects. However, ac field measurement techniques need additional refinement before these methods can be generally applied.
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Bala. L51600 Engineering Critical Assessment of Girth Welds in Small Diameter Pipe. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), June 1989. http://dx.doi.org/10.55274/r0010101.

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Transmission pipeline girth welds are fabricated and inspected to rigorous material standards such as API 1104, CSA Z 184 and BSI 4515. These standards contain weld defect acceptance levels based on good workmanship criteria and have been arrived at on the basis of traditional welding and inspection practices. In certain instances, defects that do not meet the workmanship standards have been accepted on the basis of an engineering critical assessment (ECA) using the British Standard PD 6493 assessment technique. The use of ECA is now being incorporated into the pipeline codes. Four girth welds containing hydrogen induced cracking (HIC) defects at the root were prepared in small diameter (305 mm) thin wall (6.35 mm) X52 pipes using E6010 (E41010) electrodes for the root and hot passes and E7010 (E48010) electrodes for the fill and capping passes. The CTOD tests were performed for the girth welds using each of HIC as well as fatigue pre-crack for the crack. The minimum, the average and an intermediate (between minimum and average) CTOD value at -40C obtained for the specimens containing HIC were used to determine the surface crack sizes for the girth weld roots from BS PD6493. The girth weld containing the 1/4 thickness HIC was full scale tested at -40C. The test was terminated when the remote strain gauges showed plastic deformation/ buckling in the pipe. The second and third full- scale girth weld tests were carried out with the half wall and an intermediate (between 1/4 and 1/2 wall) wall defect. In both cases the girth failed when the remote strain gauge readings in the pipe were still elastic.
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Calijuri, Mónica, and Andrés Muñoz Miranda. CACAO: Accounting and Organizational Data Storage and Consultation System: Open-Source Software for Tax Administrations. Inter-American Development Bank, March 2023. http://dx.doi.org/10.18235/0004758.

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CACAO is a web platform that allows for the receipt, validation, processing, and analysis of accounting data from taxpayers in a standardized manner. Developed in open-source code, the platform's goal is to facilitate the transmission of taxpayer data and optimize the use and analysis of accounting data by tax administrations in Latin America and the Caribbean.
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Busza, Joanna. Literature review: Challenging HIV-related stigma and discrimination in Southeast Asia: Past successes and future priorities. Population Council, 1999. http://dx.doi.org/10.31899/hiv1999.1001.

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Pervasive stigma has surrounded HIV/AIDS since the beginning of the pandemic. In Southeast Asia, as elsewhere, it has been accompanied by discrimination, affecting transmission patterns and access to care and support. This paper describes the regional experience of stigma and discrimination and offers a review of community-based interventions that have attempted to reduce them. The evidence presented comes primarily from unpublished literature and anecdotal evidence gained through interviews with project staff throughout the region.
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Han, I., S. Bond, R. Welty, Y. Du, S. Yoo, C. Reinhardt, E. Behymer, V. Sperry, and N. Kobayashi. Secure Communications in High Speed Fiber Optical Networks Using Code Division Multiple Access (CDMA) Transmission. Office of Scientific and Technical Information (OSTI), February 2004. http://dx.doi.org/10.2172/15013953.

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Best, Cody, Carl Hart, and Michael Muhlestein. Data acquisition software for impedance tube measurements. Engineer Research and Development Center (U.S.), October 2022. http://dx.doi.org/10.21079/11681/45740.

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Transmission impedance tube measurements are necessary to measure the asymmetric acoustic property known as Willis coupling. However, software is required to measure and store data from an impedance tube for acoustic material characterization. This report details the overall structure of custom-developed software built from low-level functions. Software libraries from the data acquisition system as well as the HDF5 file system are the basis for the code. A command line user interface guides a user through the necessary steps in data collection.
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