Bibliographies thématiques / OPTICAL CODING TECHNIQUES

Littérature scientifique sur le sujet « OPTICAL CODING TECHNIQUES »

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Publié le 11 septembre 2023

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Articles de revues sur le sujet "OPTICAL CODING TECHNIQUES"

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Kaur, Simarpreet, et Simranjit Singh. « Review on developments in all-optical spectral amplitude coding techniques ». Optical Engineering 57, no 11 (20 novembre 2018) : 1. http://dx.doi.org/10.1117/1.oe.57.11.116102.

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Mruthyunjaya, H. S. « BPPM optical WDM systems with error control coding techniques on BAC ». International Journal of Electronics 95, no 10 (octobre 2008) : 1093–101. http://dx.doi.org/10.1080/00207210802354866.

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Yang, C. P., S. H. Lin, M. L. Hsieh, K. Y. Hsu et T. C. Hsieh. « A Holographic Memory for Digital Data Storage ». International Journal of High Speed Electronics and Systems 08, no 04 (décembre 1997) : 749–65. http://dx.doi.org/10.1142/s0129156497000317.

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A read-only holographic memory for digital data storage is experimentally demonstrated. Techniques for coding and decoding of optical signals, and the interface techniques between the optical memory and a personal computer are described. The performance of the optical memory and the techniques for improving the bit error rate (BER) are presented.
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Llados-Bernaus, Ramon, et Robert L. Stevenson. « Edge-assisted upper band coding techniques ». International Journal of Imaging Systems and Technology 10, no 1 (1999) : 67–75. http://dx.doi.org/10.1002/(sici)1098-1098(1999)10:1<67 ::aid-ima8>3.0.co;2-1.

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Abdelaziz, Mohamed, et Essam Abdellatef. « Coded DCO-OFDM Techniques in Intensity Modulation/Direct Detection (IM/DD) Systems ». Journal of Cybersecurity and Information Management 10, no 2 (2022) : 19–25. http://dx.doi.org/10.54216/jcim.100202.

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Optical wireless communications (OWC) are among the best alternative techniques for transmitting information-laden optical radiation across a free-space channel from one place to another. DC-biased optical OFDM (DCO-OFDM) is a technique that sacrifices the power efficiency to transmit unipolar OFDM signals. The primary drawback with DCO-OFDM is its clipping noise, which causes distortion and lowers the bit error rate (BER). Thus, in this paper, we show the performance of DCO with different coded techniques to improve the BER in additive white Gaussian noise (AWGN) for IMDD systems. The experimental results show that the coded DCO-OFDM has the best performance. Furthermore, turbo coding has the best coding technique added to the DCO-OFDM system.
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Soto, Marcelo A., Gabriele Bolognini, Fabrizio Di Pasquale et Luc Thévenaz. « Long-range Brillouin optical time-domain analysis sensor employing pulse coding techniques ». Measurement Science and Technology 21, no 9 (28 juillet 2010) : 094024. http://dx.doi.org/10.1088/0957-0233/21/9/094024.

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A. Memon, Kehkashan, A. W. Umrani, M. A. Unar, Wajiha Shah et B. S. Chowdhry. « Spectral Amplitude Coding Optical CDMA : Performance Analysis on Free Space Optical Channel ». International Journal of Engineering & ; Technology 7, no 4.38 (3 décembre 2018) : 31. http://dx.doi.org/10.14419/ijet.v7i4.38.24314.

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In this paper, we investigate the performance of Spectral Amplitude Coding Optical Code Division Multiple Access technique based on Free Space Optical channel. SAC OCDMA is one of the most popular multiplexing techniques since many years and FSO is gaining popularity and is very useful especially in point to point communication. The system presented in this paper utilizes Walsh Hadamard code as signature code. The coder and decoder structures are based on optical filters of fiber Bragg gratings (FBGs). This system focuses on the performance analysis of FSO based systems for subtropical regions. This paper demonstrates the error rate performance in the form of eye diagrams/BER under varying channel gain and link distances. Five cases have been taken which shows that SAC OCDMA FSO system is reliable even for distances sufficient to overcome the last mile problem.
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Gao, Xiao Rong, Pei Wang, Jian Qiang Guo, Jin Long Li, Kai Yang et Ti Kui Wang. « Error Correction Based on LDPC Codes in Wireless Optical Communication ». Applied Mechanics and Materials 380-384 (août 2013) : 3811–14. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.3811.

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Complex atmospheric environment seriously affect the quality of wireless of information transmission. In order to improve the wireless optical communication quality, and reduce the influence of attenuation, flicker, angle misalignment caused by atmospheric scattering, absorption, turbulence, beam expander, mismatch, atmospheric channel model is established while coding techniques for error control in wireless optical communication was researched into.The improvement result of error rate by error correction coding in different SNR situations was obtained. The results showed that the LDPC coding can significantly reduce the BER. For Gaussian channel, SNR can be reduced 8 dB when BER is 10-6; For wireless optical communication , LDPC codes can make the error rate reduced by 4-5 orders of magnitude.
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Ntogari, Georgia, Thomas Kamalakis et Thomas Sphicopoulos. « Performance Analysis of Space Time Block Coding Techniques for Indoor Optical Wireless Systems ». IEEE Journal on Selected Areas in Communications 27, no 9 (décembre 2009) : 1545–52. http://dx.doi.org/10.1109/jsac.2009.091204.

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Settles, G. S. « Colour-coding schlieren techniques for the optical study of heat and fluid flow ». International Journal of Heat and Fluid Flow 6, no 1 (mars 1985) : 3–15. http://dx.doi.org/10.1016/0142-727x(85)90024-4.

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Thèses sur le sujet "OPTICAL CODING TECHNIQUES"

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Ivkovic, Milos. « Characterization and Coding Techniques for Long-Haul Optical Telecommunication Systems ». Diss., The University of Arizona, 2007. http://hdl.handle.net/10150/196150.

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This dissertation is a study of error in long haul optical fiber systems and how to coupe with them. First we characterize error events occurring during transmission, then we determine lower bounds on information capacity (achievable information rates) and at the end we propose coding schemes for these systems.Existing approaches for obtaining probability density functions (PDFs) for pulse energy in long-haul optical fiber transmission systems rely on numerical simulations or analytical approximations. Numerical simulations make far tails of the PDFs difficult to obtain, while existing analytic approximations are often inaccurate, as they neglect nonlinear interaction between pulses and noise.Our approach combines the instanton method from statistical mechanics to model far tails of the PDFs, with numerical simulations to refine the middle part of the PDFs. We combine the two methods by using an orthogonal polynomial expansion constructed specifically for this problem. We demonstrate the approach on an example of a specific submarine transmission system.Once the channel is characterized estimating achievable information rates is done by a modification of a method originally proposed by Arnold and Pfitser. We give numerical results for the same optical transmission system (submarine system at transmission rate 40Gb/s).The achievable information rate varies with noise and length of the bit patterns considered (among other parameters). We report achievable numerical rates for systems with different noise levels, propagation distances and length of the bit patterns considered.We also propose two iterative decoding schemes suitable for high-speed long-haul optical transmission. One scheme is a modification of a method, originally proposed in the context of magnetic media, which incorporates the BCJR algorithm (to overcomeintersymbol interference) and Low-Density Parity-Check (LDPC) codes for additional error resilience. This is a ``soft decision scheme" -meaning that the decoding algorithm operates with probabilities(instead of binary values). The second scheme is ``hard decision" -it operates with binary values. This scheme is based on the maximum likelihood sequence detection-Viterbi algorithm and a hard decision"Gallager B" decoding algorithm for LDPC codes.
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McPheters, Laura L. « Concatenated coding and iterative decoding for magnetic and optical recording ». Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/16018.

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Supnithi, Pornchai. « Coding and signal processing in M-ary optical recording systems ». Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/13440.

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Higashino, Satoru. « Study on signal processing and coding techniques for high density optical information storage channels ». 京都大学 (Kyoto University), 2006. http://hdl.handle.net/2433/135949.

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ANDO', Andrea. « FREE SPACE OPTICS LINKS AFFECTED BY OPTICAL TURBULENCE : CHANNEL MODELING, MEASUREMENTS AND CODING TECHNIQUES FOR ERROR MITIGATION ». Doctoral thesis, Università degli Studi di Palermo, 2014. http://hdl.handle.net/10447/90925.

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FSO is an optical wireless line-of-sight communication system able to offer good broadband performance, electromagnetic interference immunity, high security, license-free operation, low power consumption, ease of relocation, and straightforward installation. It represents a modern technology, significantly functional when it is impossible, expensive or complex to use physical connections or radio links. Unfortunately, since the transmission medium in a terrestrial FSO link is the air, these communications are strongly dependent on various atmospheric phenomena (e.g., rain, snow, optical turbulence and, especially, fog) that can cause losses and fading. Therefore, in worst-case conditions, it could be necessary to increase the optical transmission power, although, at the same time, it is needed to comply to safety regulations. The effects of the already mentioned impairments are: scattering (i.e., Rayleigh and Mie) losses, absorption and scintillation. The first two can be described by proper attenuation coefficients and increase if the atmospheric conditions get worst. As regards scintillation, it is a random phenomenon, appreciable even under clear sky. Because of scintillation, in FSO links, the irradiance fluctuates and could drop below a threshold under which the receiver is not able to detect the useful signal. In this case, communications suffer from erasure errors, which cause link outages. This phenomenon becomes relevant at high distance, but it can also be observed in 500m-long FSO links. Moreover, the optical turbulence intensity can change of an order of magnitude during the day: it reaches its maximum around midday (when the temperature is the highest) and, conversely, it is lower during the night. In order to reduce or eliminate these impairments, different methods (both hardware and software) were studied and reported in literature. Hardware solutions focus on aperture averaging effects to reduce irradiance fluctuations, in particular by using a bigger detector or multi-detector systems. On the other hand, software techniques mostly focus on transmission codes. Rateless codes are an innovative solution, suitable for channels affected by erasure or burst errors. They add a redundant coding (also settable on the fly) to the source data, allowing the receiver to successfully recover the whole payload that, otherwise, would be corrupted or partially lost. To test rateless codes, recovery capabilities in FSO channels, detailed information about the occurring signal fading are needed: in particular, its depth, temporal duration and statistics. For this reason, I have implemented a time-correlated channel model able to generate an irradiance time-series at the receiver side, at wide range of turbulence conditions (from weak to strong). The time-series represents a prediction of temporal irradiance fluctuations caused by scintillation. In this way, I was able to test the recovery capabilities of several types of rateless codes. I have performed measurement campaigns in order to characterize Free Space Optics links affected by the optical turbulence. In particular, I have used three different setups placed in the Laboratory of Optics of the University of Palermo and in the Optical Communication Laboratory of the Northumbria University. Thanks to an in-depth post-processing of the collected data, I was able to extract useful information about the FSO link quality and the turbulence strength, thus proving the effectiveness of the Gamma-Gamma model under several turbulence conditions. In Chapter 1, I will introduce the theory of optical wireless communications and, in particular, of Free Space Optics communications. In detail, I will describe the advantages and the impairments that characterize this kind of communication and discuss about its applications. In Chapter 2, the adopted channel models are presented. In particular, these models are able to predict irradiance fluctuations at the detector in Free Space Optics links and were designed for terrestrial and space-to-ground communications at different link specifications, turbulence conditions and temporal covariance. Firstly, a brief description of the employed irradiance distribution and of the irradiance covariance functions is presented. The details of the above mentioned channel model implementation and the performance are then described. Finally, in order to detail the channel model features, several examples of irradiance fluctuation predictions are depicted. In Chapter 3, the details of a measurement campaign, focused on the analysis of optical turbulence effects in a FSO link, will be treated. Three different measurement setups composed of different typologies of laser sources, detectors and turbulent channels will be described. Data post-processing will be discussed. Moreover, a performance evaluation of the terrestrial channel model described in Chapter 2 will be discussed. In Chapter 4, rateless codes will be presented. These codes introduce a redundancy by means of repair symbols, associated to the source data, and, in case of losses, they are able to recover the source data without any need for retransmission. They can also manage large amounts of data and offer very interesting features for erasure channels and multicast/broadcast applications. Three different classes of rateless codes will be described and, in particular: Luby Transform, Raptor and RaptorQ codes. Moreover, the performance of the rateless codes in Free Space Optics links will be investigated. The implemented simulators are based on the channel models presented in Chapter 2 and focus on the study of rateless codes recovery capabilities when erasure errors due to fadings occur. The results on the performance of three rateless codes typologies, in two different FSO links, will be illustrated. All the research work was supported by the European Space Agency (grant no. 5401001020). Experimental activities were performed in collaboration with the Optical Communications Research Group of the Northumbria University and within the COST IC1101 European Action.
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Abouseif, Akram. « Emerging DSP techniques for multi-core fiber transmission systems ». Electronic Thesis or Diss., Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAT013.

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Les systèmes de communication optique ont connu plusieurs phases de développement au cours des dernières décennies. Ils approchent aujourd'hui les limites de capacité du cana non-linéaire. L'espace est aujourd'hui le dernier degré de liberté à mettre en œuvre afin de continuer à répondre aux demandes de capacité à venir pour les prochaines années. Par conséquent, des recherches intensives sont menées pour explorer tous les aspects concernant le déploiement du système de multiplexage par division spatiale (SDM). Plusieurs dégradations ont un impact sur les systèmes SDM en raison de l'interaction des canaux spatiaux qui dégrade les performances du système. Dans cette thèse, nous nous concentrons sur les fibres multicœurs (MCF) comme l'approche la plus prometteuse pour être le premier représentant du système SDM. Nous présentons différentes solutions numériques et optiques pour atténuer l'effet non unitaire connu sous le nom de perte dépendante du cœur (CDL). La première partie est consacrée à l'étude des performances de la transmission MCF en tenant compte des dégradations de propagation qui impactent les systèmes MCF. Nous proposons un modèle de canal qui aide à identifier le système MCF. La deuxième partie est consacrée à la technique optique pour améliorer les performances de transmission avec une solution optimale pour la réduction des CDL. Ensuite, nous avons introduit des techniques numériques pour des améliorations supplémentaires, la pré-compensation Zero Forcing et le codage spatio-temporel pour une atténuation CDL supplémentaire. Tous les résultats de simulation sont validés analytiquement en dérivant les bornes supérieures de probabilité d'erreur
Optical communication systems have seen several phases in the last decades. It is predictable that the optical systems as we know will reach the non-linear capacity limits. At the moment, the space is the last degree of freedom to be implemented in order to keep delivering the upcoming capacity demands for the next years. Therefore, intensive researches are conducted to explore all the aspects concerning the deployment of the space-division multiplexing (SDM) system. Several impairments impact the SDM systems as a result from the interaction of the spatial channels which degrades the system performance. In this thesis, we focus on the multi-core fibers (MCFs) as the most promising approach to be the first representative of the SDM system. We present different digital and optical solutions to mitigate the non-unitary effect known as the core dependent loss (CDL). The first part is dedicated to study the performance of the MCF transmission taking into account the propagating impairments that impact the MCF systems. We propose a channel model that helps to identify the MCFs system. The second part is devoted to optical technique to enhance the transmission performance with an optimal solution. After, we introduced digital techniques for further enhancement, the Zero Forcing pre-compensation and the space-time coding for further CDL mitigation. All the simulation results are validated analytically by deriving the error probability upper bounds
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Rios, Müller Rafael. « Formats de modulation et traitement du signal avancés pour les communications optiques très hauts débits à forte efficacité spectrale ». Thesis, Evry, Institut national des télécommunications, 2016. http://www.theses.fr/2016TELE0006/document.

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La détection cohérente combinée avec le traitement du signal s’est imposée comme le standard pour les systèmes de communications optiques longue distance à 100 Gb/s (mono-porteuse) et au-delà. Avec l'avènement des convertisseurs numérique-analogique à haute vitesse et haute résolution, la génération de formats de modulation d'ordre supérieure avec filtrage numérique est devenue possible, favorisant l’émergence de transmissions à forte densité spectrale. En outre, la généralisation des liaisons non gérées en dispersion permet une modélisation analytique du canal optique et favorise l'utilisation d’outils puissants de la théorie de l'information et du traitement du signal. En se fondant sur ces outils, de nouveaux formats de modulation à entrelacement temporel dits hybrides et formats multidimensionnels sont étudiés et mise en oeuvre expérimentalement. Leur impact sur les algorithmes de traitement du signal et sur le débit d'information atteignable est analysé en détail. La conception de transpondeurs de prochaine génération à 400 Gb/ s et 1 Tb/s reposant sur des signaux à débit-symbole élevé est également étudiée. Ces systèmes sont intéressants pour réduire le coût par bit en augmentant la capacité émise par transpondeur. L'élaboration d'algorithmes de traitement du signal avancés associés à l’utilisation de composants optoélectroniques à l'état de l'art ont permis la démonstration d’expériences records: d’une part la première transmission mono-porteuse à 400 Gb/s sur une distance transatlantique (pour une efficacité spectrale de 6 b/s/Hz) d’autre part la première transmission à 1 Tb/s basée sur la synthèse en parallèle de plusieurs tranches spectrales (8 b/s/Hz)
Coherent detection in combination with digital signal processing is now the de facto standard for long-haul high capacity optical communications systems operating at 100 Gb/s per channel and beyond. With the advent of high-speed high-resolution digital-to-analog converters, generation of high order modulation formats with digital pulse shaping has become possible allowing the increase of system spectral efficiency. Furthermore, the widespread use of transmission links without in-line dispersion compensation enables elegant analytical optical channel modeling which facilitates the use of powerful tools from information theory and digital signal processing. Relying on these aforementioned tools, the introduction of time-interleaved hybrid modulation formats, multi-dimensional modulation formats, and alternative quadrature amplitude modulation formats is investigated in high-speed optical transmission systems. Their impact on signal processing algorithms and achievable information rate over optical links is studied in detail. Next, the design of next generation transponders based on high symbol rate signals operating at 400 Gb/s and 1 Tb/s is investigated. These systems are attractive to reduce the cost per bit as more capacity can be integrated in a single transponder. Thanks to the development of advanced signal processing algorithms combined with state-of-the-art opto-electronic components, record high-capacity transmission experiments are demonstrated: the first single carrier 400 Gb/s transmission over transatlantic distance (at 6 b/s/Hz) and the first 1 Tb/s net data rate transmission based on the parallel synthesis of multiple spectral slices (at 8 b/s/Hz)
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Gangammanavar, Harshavardhana J. « OPTIMAL CODING AND SCHEDULING TECHNIQUES FOR BROADCASTING DEADLINE CONSTRAINT TRAFFIC OVER UNRELIABLE WIRELESS CHANNELS ». The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1262111942.

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Zhang, Yequn. « Advanced Coding Techniques For Fiber-Optic Communications And Quantum Key Distribution ». Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/555940.

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Coding is an essential technology for efficient fiber-optic communications and secure quantum communications. In particular, low-density parity-check (LDPC) coding is favoured due to its strong error correction capability and high-throughput implementation feasibility. In fiber-optic communications, it has been realized that advanced high-order modulation formats and soft-decision forward error correction (FEC) such as LDPC codes are the key technologies for the next-generation high-speed optical communications. Therefore, energy-efficient LDPC coding in combination with advanced modulation formats is an important topic that needs to be studied for fiber-optic communications. In secure quantum communications, large-alphabet quantum key distribution (QKD) is becoming attractive recently due to its potential in improving the efficiency of key exchange. To recover the carried information bits, efficient information reconciliation is desirable, for which the use of LDPC coding is essential. In this dissertation, we first explore different efficient LDPC coding schemes for optical transmission of polarization-division multiplexed quadrature-amplitude modulation (QAM) signals. We show that high energy efficiency can be achieved without incurring extra overhead and complexity. We then study the transmission performance of LDPC-coded turbo equalization for QAM signals in a realistic fiber link as well as that of pragmatic turbo equalizers. Further, leveraging the polarization freedom of light, we expand the signal constellation into a four-dimensional (4D) space and evaluate the performance of LDPC-coded 4D signals in terms of transmission reach. Lastly, we study the security of a proposed weak-coherent-state large-alphabet QKD protocol and investigate the information reconciliation efficiency based on LDPC coding.
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SIRINGI, NAVYA. « PERFORMANCE EVALUATION OF OPTICAL CODING TECHNIQUES FOR OPTICAL PON NETWORK ». Thesis, 2020. http://dspace.dtu.ac.in:8080/jspui/handle/repository/18178.

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In this dissertation, the two 2-D coding techniques has been designed for OCDMA system and their performance has been compared for passive optical network. The first coding technique i.e. Hadamard coding is designed for OCDMA system. In the first phase of this dissertation, twodimensional Optical Code Division Multiple Access System (2D-OCDMA) has been designed by using wavelength/phase Hadamard encoding technique. Usually Hadamard encoding technique is used in single domain i.e. wavelength domain. In this research work, 2D encoding technique is designed for OCDMA system in spectral as well as phase domain which will further improve the security. The proposed 2-D OCDMA increases the number of users by splitting the optical source to two orthogonal phase signals without the requirement to increase the code length as well as wavelengths. The proposed system requires a smaller number of LEDs as well as improves the security. The performance of the proposed system is analyzed by designing an OCDMA system for six users. The performance is analyzed in terms of Bit Error Rate (BER) and Quality Factor by increasing the number of users and for different distance range. In the second phase of this dissertation, Cyclic Shift (CS) coding technique is implemented for two dimensions i.e. wavelength and phase for Optical Code Division Multiple Access System (2D-OCDMA). Previously this cyclic shift encoding was done in spectral domain but in this dissertation the encoding technique has been proposed for spectral as well as phase domain. The proposed 2-D Cyclic shift code with spectral as well as phase domain increases the number of users by splitting the optical source to two orthogonal phase signals without the requirement to increase the code length as well as number of LEDs. Thus, the wavelength required for this proposed encoding structure is also reduced. In this paper, this encoding technique has been tested for four users. The performance is analyzed with increase in number of users. The proposed 2D is compared with the previously implemented 1D CS SAC-OCDMA code. Performances of the system designed show better result than the previously designed SACOCDMA Cyclic Shift code. The results of the proposed system in terms of parameters like bit error rate is within the range of 10-9. .
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Livres sur le sujet "OPTICAL CODING TECHNIQUES"

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1958-, Ryan William E., et Vasic Bane, dir. Coding for optical channels. New York : Springer, 2010.

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Addison, Bouman Charles, Panchenko M. V, Steinbach Eckehard G, IS & T--the Society for Imaging Science and Technology. et Society of Photo-optical Instrumentation Engineers., dir. Visual communications and image processing 2001 : 24-26 January, 2001, San Jose, [California] USA. Bellingham, Washington : SPIE, 2001.

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K, Katsaggelos Aggelos, Society of Photo-optical Instrumentation Engineers. et IEEE Circuits and Systems Society., dir. Visual communications and image processing '94 : 25-29 September 1994, Chicago, Illinois. Bellingham, Wash., USA : SPIE, 1994.

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Rashid, Ansari, Smith Mark J. T, Society of Photo-optical Instrumentation Engineers. et IEEE Circuits and Systems Society., dir. Visual communications and image processing '96 : 17-20 March, 1996, Orlando, Florida. Bellingham, Wash : SPIE, 1996.

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Kiyoharu, Aizawa, Stevenson Robert L. 1963-, Zhang Ya-Qin, IS & T--the Society for Imaging Science and Technology., Society of Photo-optical Instrumentation Engineers. et IEEE Circuits and Systems Society., dir. Visual communications and image processing '99 : 25-27 January 1999, San Jose, California. Bellingham, Wash., USA : SPIE, 1999.

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T, Wu Lance, et Society of Photo-optical Instrumentation Engineers., dir. Visual communications and image processing '95 : 24-26 May, 1995, Taipei, Taiwan. Bellingham, Wash., USA : SPIE, 1995.

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Ryan, William, Ivan Djordjevic et Bane Vasic. Coding for Optical Channels. Springer, 2014.

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Ryan, William, Ivan Djordjevic et Bane Vasic. Coding for Optical Channels. Springer, 2010.

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Visual communications and image processing '97 : 12-14 February, 1997, San Jose, California. Bellingham, Wash : SPIE, 1997.

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Visual communications and image processing '98 : 28-30 January 1998, San Jose, California. Bellingham, Wash., USA : SPIE, 1998.

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Chapitres de livres sur le sujet "OPTICAL CODING TECHNIQUES"

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Djordjevic, Ivan B. « Advanced Coding and Coded Modulation Techniques ». Dans Advanced Optical and Wireless Communications Systems, 669–811. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-63151-6_9.

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Djordjevic, Ivan B. « Advanced Coding and Coded Modulation Techniques ». Dans Advanced Optical and Wireless Communications Systems, 529–645. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-98491-5_9.

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Kumar, Arvind, Madan Singh et Kehar Singh. « Speckle Coding for Optical and Digital Data Security Applications ». Dans Advances in Speckle Metrology and Related Techniques, 239–99. Weinheim, Germany : Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527633852.ch6.

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Bhanja, Urmila. « Design and Performance Analysis of an Encrypted Two-Dimensional Coding Technique for Optical CDMA ». Dans Lecture Notes in Electrical Engineering, 573–83. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-2818-4_61.

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Siringi, Navya, et Gurjit Kaur. « Performance evaluation of two-dimensional cyclic shift coding technique for Optical Code Division Multiple Access System ». Dans Recent Trends in Communication and Electronics, 262–67. London : CRC Press, 2021. http://dx.doi.org/10.1201/9781003193838-48.

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Kumar, P. Vijay, Moe Z. Win, Hsiao-Feng Lu et Costas N. Georghiades. « Error-Control Coding Techniques and Applications ». Dans Optical Fiber Telecommunications IV-B, 902–64. Elsevier, 2002. http://dx.doi.org/10.1016/b978-012395173-1/50017-7.

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Kemény, Zs, et E. Ilie-Zudor. « Alphanumerical and Optical Coding Systems for Food Traceability ». Dans Advances in Food Traceability Techniques and Technologies, 49–65. Elsevier, 2016. http://dx.doi.org/10.1016/b978-0-08-100310-7.00004-1.

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« Modulation, coding, and synchronization techniques for nano-electromagnetic communications in terahertz band ». Dans Nano-Electromagnetic Communication at Terahertz and Optical Frequencies : Principles and Applications, 129–44. Institution of Engineering and Technology, 2019. http://dx.doi.org/10.1049/sbew542e_ch7.

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Zhang, Zonghua. « Application of Red, Green, and Blue Color Channels in 3D Shape Measurement ». Dans 3-D Surface Geometry and Reconstruction, 265–83. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-4666-0113-0.ch011.

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Optical full-field measurement techniques have been widely studied in academia and applied to many actual fields of automated inspection, reverse engineering, cosmetic surgery, and so on. With the advent of color CCD cameras and DMD (Digital Micromirror Device) based color DLP (Digital Light Processing) projectors, their major red, green, and blue channels have been used as a carrier to code fringe patterns. Since three fringe patterns can be simultaneously projected and captured at one shot, the acquisition time reduces to 1/3 of the value by the gray fringe pattern projection. This chapter will introduce two kinds of applications of red, green, and blue as a carrier: 1) modulation and demodulation method of coding sinusoidal fringe patterns into RGB channels of a composite color image; and 2) modulation and demodulation method of coding sinusoidal and binary fringe patterns into RGB channels of multiple composite color images. Experiments on testing the two kinds of applications were carried out by measuring the shape of objects’ surface. The results confirm that red, green, and blue channels can be used as a carrier to reduce the acquisition time.
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Zayani, Riham, Amira Ben Hassine, Amal Rabti, Amal Raouaf et Noureddine Raouafi. « Electrochemical and Optical Detection of MicroRNAs as Biomarkers for Cancer Diagnosis ». Dans Current Cancer Biomarkers, 272–348. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815079364123010016.

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According to the miRBase (v 22.1), released on October 2018, there are more than 1900 identified human microRNA mature sequences. MicroRNAs (aka miRNAs or miRs) are a class of short non-coding RNA sequences, which have been detected within the cells or in body fluids. They act as gene expression regulators and intervene in numerous physiologic and development processes. They post-transcriptionally/translationally regulate expression of some proteins by forming miRNA-induced silencing complex (mRISC) by binding to 3’-UTR regions of the target messenger RNA to inhibit the protein synthesis. It has been noted that up- and down-regulation of miRs are associated with the pathogenesis of several types of human cancers since their target proteins are tumor-suppressive or oncogenic ones. This chapter will present a general summary of miRNA biogenesis, their link to cancer, and biological methods for their detection. Thanks to their ease of use and high sensitivity, electrochemical and optical techniques were used to detect miRNAs with or without the assistance of amplification methods. We will review the state-of-the-art electrochemical and optical methods for their detection, emphasizing the progress achieved in the last five years (2015-2020). Finally, we will present the main advantages, challenges, and future prospects for future research on detecting miRNAs for clinical diagnosis or prognosis in cancers.
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Actes de conférences sur le sujet "OPTICAL CODING TECHNIQUES"

1

Koganei, Yohei. « Coding techniques for beyond 1Tbps optical transmission ». Dans 2022 27th OptoElectronics and Communications Conference (OECC) and 2022 International Conference on Photonics in Switching and Computing (PSC). IEEE, 2022. http://dx.doi.org/10.23919/oecc/psc53152.2022.9849905.

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Bryngdahl, Olof. « Coding techniques in digital holography (Abstract Only) ». Dans International Conference on Holography and Optical Information Processing, sous la direction de Guoguang Mu, Guofan Jin et Glenn T. Sincerbox. SPIE, 1996. http://dx.doi.org/10.1117/12.263049.

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Batshon, Hussam G. « Approaching Shannon Limit with Advanced Modulation and Coding Techniques ». Dans Optical Fiber Communication Conference. Washington, D.C. : OSA, 2019. http://dx.doi.org/10.1364/ofc.2019.th3g.1.

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Joshi, Rajan L., Joel Sole, Jianle Chen, Wei-Jung Chien et Marta Karczewicz. « Techniques for increasing throughput in HEVC transform coefficient coding ». Dans SPIE Optical Engineering + Applications, sous la direction de Andrew G. Tescher. SPIE, 2012. http://dx.doi.org/10.1117/12.945962.

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Li, Bang-Yi, Nai-Keng Bao et Yi-Nan Wei. « Optical information coding and decoding techniques for photomechanics ». Dans Second International Conference on Experimental Mechanics, sous la direction de Fook S. Chau et Chenggen Quan. SPIE, 2001. http://dx.doi.org/10.1117/12.429614.

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Wyrowski, Frank. « Coding And Quantization Techniques In Digital Phase Holography ». Dans 1989 Intl Congress on Optical Science and Engineering, sous la direction de G. Michael Morris. SPIE, 1989. http://dx.doi.org/10.1117/12.961689.

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Henniger, Hennes, Bernhard Epple, Stuart D. Milner et Christopher C. Davis. « Coding techniques to mitigate fading on free-space optical communication links ». Dans Optical Engineering + Applications, sous la direction de Arun K. Majumdar et Christopher C. Davis. SPIE, 2008. http://dx.doi.org/10.1117/12.798305.

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Chiu, Yi-jen, Lidong Xu, Wenhao Zhang et Hong Jiang. « Self-derivation of motion estimation techniques to improve video coding efficiency ». Dans SPIE Optical Engineering + Applications, sous la direction de Andrew G. Tescher. SPIE, 2010. http://dx.doi.org/10.1117/12.862719.

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Dai, Wei, Madhu Krishnan et Pankaj Topiwala. « Chroma sampling and modulation techniques in high dynamic range video coding ». Dans SPIE Optical Engineering + Applications, sous la direction de Andrew G. Tescher. SPIE, 2015. http://dx.doi.org/10.1117/12.2188739.

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Cincotti, Gabriella, Nobuyuki Kataoka, Naoya Wada et Ken-ichi Kitayama. « Perspectives of optical coding/decoding techniques in OCDMA networks ». Dans Asia Communications and Photonics Conference and Exhibition. Washington, D.C. : OSA, 2009. http://dx.doi.org/10.1364/acp.2009.tudd1.

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