Literatura académica sobre el tema "Codes orthogonaux"
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Artículos de revistas sobre el tema "Codes orthogonaux"
Yen, Chih-Ta, Ing-Jr Ding y Cheng-Mu Tsai. "PERFORMANCE ANALYSIS OF SEVERAL QUASI-ORTHOGONAL CODES OPTICAL CDMA FOR RADIO-OVER-FIBER SYSTEM". Transactions of the Canadian Society for Mechanical Engineering 37, n.º 3 (septiembre de 2013): 415–26. http://dx.doi.org/10.1139/tcsme-2013-0031.
Texto completoMienkina, Martin P., Claus-Stefan Friedrich, Nils C. Gerhardt, Martin F. Beckmann, Martin F. Schiffner, Martin R. Hofmann y Georg Schmitz. "Multispectral photoacoustic coded excitation imaging using unipolar orthogonal Golay codes". Optics Express 18, n.º 9 (15 de abril de 2010): 9076. http://dx.doi.org/10.1364/oe.18.009076.
Texto completoTong, Ling, Qiong He, Alejandra Ortega, Alessandro Ramalli, Piero Tortoli, Jianwen Luo y Jan D’hooge. "Coded Excitation for Crosstalk Suppression in Multi-line Transmit Beamforming: Simulation Study and Experimental Validation". Applied Sciences 9, n.º 3 (31 de enero de 2019): 486. http://dx.doi.org/10.3390/app9030486.
Texto completoWirastuti, N. M. A. E. D., I. M. A. Suyadnya y D. C. Khrisne. "Performance Assessment of OFDM System using Reed-Solomon Codes over Fading Channels". Journal of Electrical, Electronics and Informatics 2, n.º 2 (31 de agosto de 2018): 48. http://dx.doi.org/10.24843/jeei.2018.v02.i02.p06.
Texto completoGrolmusz, Vince. "Co-Orthogonal Codes". Designs, Codes and Cryptography 38, n.º 3 (marzo de 2006): 363–72. http://dx.doi.org/10.1007/s10623-005-1495-4.
Texto completoChee, Yeow Meng, Han Mao Kiah, San Ling y Hengjia Wei. "Geometric Orthogonal Codes of Size Larger Than Optical Orthogonal Codes". IEEE Transactions on Information Theory 64, n.º 4 (abril de 2018): 2883–95. http://dx.doi.org/10.1109/tit.2017.2788140.
Texto completoAsif, Muhammad, Wuyang Zhou, Qingping Yu, Xingwang Li y Nauman Ali Khan. "A Deterministic Construction for Jointly Designed Quasicyclic LDPC Coded-Relay Cooperation". Wireless Communications and Mobile Computing 2019 (26 de septiembre de 2019): 1–12. http://dx.doi.org/10.1155/2019/5249373.
Texto completoKim, Dong-Hoon, Hyung-Jung Kim y Jae-Han Lim. "Design of Optimized Coded LFM Waveform for Spectrum Shared Radar System". Sensors 21, n.º 17 (28 de agosto de 2021): 5796. http://dx.doi.org/10.3390/s21175796.
Texto completoBASSA, Alp y Nesrin TUTAŞ. "Extending self-orthogonal codes". TURKISH JOURNAL OF MATHEMATICS 43, n.º 5 (28 de septiembre de 2019): 2177–82. http://dx.doi.org/10.3906/mat-1905-103.
Texto completoGustavsson, B. y T. Grydeland. "Orthogonal-polarization alternating codes". Radio Science 44, n.º 6 (diciembre de 2009): n/a. http://dx.doi.org/10.1029/2008rs004132.
Texto completoTesis sobre el tema "Codes orthogonaux"
Baechler, Brice. "Analyse et détermination de codes doublement orthogonaux pour décodage itératif". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0019/MQ57390.pdf.
Texto completoCardinal, Christian. "Décodage à seuil itératif sans entrelacement des codes convolutionnels doublement orthogonaux". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ65537.pdf.
Texto completoOuadid, Abdelkarim. "Prototype micro-électronique d'un décodeur itératif pour des codes doublement orthogonaux". Mémoire, École de technologie supérieure, 2004. http://espace.etsmtl.ca/715/1/OUADID_Abdelkarim.pdf.
Texto completoDru, Frédéric. "Décodage à seuil itératif des codes convolutionnels doublement orthogonaux perforés et application aux modulations multiniveaux". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ65572.pdf.
Texto completoGrandpierre, Benoît. "Produits automorphes, classification des réseaux et théorie du codage". Electronic Thesis or Diss., Lille 1, 2009. http://www.theses.fr/2009LIL10019.
Texto completoBorcherds’ [Phi]12 function is a modular form in 26 variables for the orthogonal group O+(II2,26) and the character determinant, of singular weight 12, it was constructed by Borcherds in 1994 together with the automorphic products theory. It determines the Fake Monster Lie Algebra, which plays the fundamental role in the proof of the Moonshine Conjecture. [Phi]12 is also a reflective form (its zeros are hyperplans of orthogonal reflections in O+(II2,26)). Many examples were constructed by Borcherds, and Nikulin has proved there is, in principle, only a finite number of reflective modular forms. Gritsenko and Nikulin classified reflective modular forms in the case of maximal lattices of signature (1,2) (1998-2002). Other important examples of reflective forms of singular weight were constructed by N. Scheithauer (2000 - 2005). The classification of reflective modular forms is a very important question, such forms have many applications in different fields of mathematics and physics : in the theory of Kac-Moody algebras, in algebraic geometry, in string theory... In this thesis, we describe a new class of reflective forms related to the Borcherds’function [Phi]12. The signature of the orthogonal groups we consider goes between (2,3) and (2,25). All the forms we obtain are quasi pull-back of [Phi]12. This arithmetic method gives more than 60 reflective modular forms, the first of them being the Siegel modular form of weight 35 constructed by Igusa in 1964
Grandpierre, Benoît. "Produits automorphes, classification des réseaux et théorie du codage". Thesis, Lille 1, 2009. http://www.theses.fr/2009LIL10019/document.
Texto completoBorcherds’ [Phi]12 function is a modular form in 26 variables for the orthogonal group O+(II2,26) and the character determinant, of singular weight 12, it was constructed by Borcherds in 1994 together with the automorphic products theory. It determines the Fake Monster Lie Algebra, which plays the fundamental role in the proof of the Moonshine Conjecture. [Phi]12 is also a reflective form (its zeros are hyperplans of orthogonal reflections in O+(II2,26)). Many examples were constructed by Borcherds, and Nikulin has proved there is, in principle, only a finite number of reflective modular forms. Gritsenko and Nikulin classified reflective modular forms in the case of maximal lattices of signature (1,2) (1998-2002). Other important examples of reflective forms of singular weight were constructed by N. Scheithauer (2000 - 2005). The classification of reflective modular forms is a very important question, such forms have many applications in different fields of mathematics and physics : in the theory of Kac-Moody algebras, in algebraic geometry, in string theory... In this thesis, we describe a new class of reflective forms related to the Borcherds’function [Phi]12. The signature of the orthogonal groups we consider goes between (2,3) and (2,25). All the forms we obtain are quasi pull-back of [Phi]12. This arithmetic method gives more than 60 reflective modular forms, the first of them being the Siegel modular form of weight 35 constructed by Igusa in 1964
Odhiambo, Michael Derrick. "Spatial data focusing using direct sequence spread spectrum modulation". Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS060.
Texto completoThis work proposes the implementation of Spatial Data Focusing (SDF) using spread spectrum techniques. SDF was recently proposed as a candidate alternative to classical power focusing schemes in wireless geocasting applications. Unlike power focusing approaches where radiated power is directed to a defined direction, in SDF, it is the data to be transmitted that is processed in such a manner that it can only be decoded at a predefined location. This work exploits the dual orthogonality due to classical quadrature components and orthogonal Gold spreading sequences to design the IQ and spread spectrum based spatial data focusing (DSSS-SDF-IQ) scheme. It is demonstrated that SDF attains better spatial selectivity than classical power focusing for a given antenna array size. The robustness of the proposed scheme is subsequently demonstrated by implementing it over a classical Urban Canyon 6-ray multipath channel model, where it is shown that the scheme can exhibit beamwidth as narrow as 1 degree with only a 4-antenna array. In SDF, the beamwidth is defined as the area within which data can be decoded as opposed to classical half power beamwidth. Chapter 1 introduces the concept of geocasting. Chapter 2 reviews the different techniques that enable directional capabilities on base stations. Chapter 3 introduces the principles of direct sequence spread spectrum based SDF. Chapter 4 investigates the influence of multipath channel on DSSS-SDF scheme. For all the cases studied above, relevant simulations are implemeneted to validate the discussions. Chapter 5 summarizes the work with a conclusion and perspective on possible future research directions
Semerciler, Salih. "Coded orthogonal signaling". Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23567.
Texto completoMerensky, Alexander Mark. "A multi-dimensional code-division-multiplexed OFDMA modem using cyclic rotated orthogonal complete complementary codes". Diss., University of Pretoria, 2012. http://hdl.handle.net/2263/31146.
Texto completoBoussebt, Amina. "Etude et mise en oeuvre de la technologie Li-Fi pour un lit de bébé connecté sans fil et sans radio". Electronic Thesis or Diss., Limoges, 2023. http://www.theses.fr/2023LIMO0091.
Texto completoThe field of the remote monitoring has experienced significant advancements in recent decades, and now covers different contexts, such as hospitals, retirement homes, and private homes also. The majority of existing systems are based on radio frequency technology (RF).We propose in this thesis, research focused on remote monitoring in a new context involving a nursery. Given the limitations of RF technology, including the impact of electromagnetic interference, and security vulnerabilities, an alternative solution is optical wireless communication technology. Therefore, we investigated the use of infrared technology for simultaneous transmission of data collected from sensors placed on the foot of baby beds, and also on the babies themselves lying in their beds within the nursery. The reception system consists of photodiodes positioned at the corners of a central lighting panel on the celling. The channel simulation carried out using ray-tracing and Monte-Carlo methods was used to determine the channel gain for each device. Several deployment scenarios were defined, considering the nature of the devices (removable or fixed) and the interchangeability of beds in the room. The channel sharing employs the code division multiple access (OCDMA) associated with the optical orthogonal codes (OOC) with the primary constraint being the137 multiple access interference (MAI). The performance of binary pulse position modulation (2- PPM) with OCDMA and soft decoding in reception was studied theoretically and by simulation involving the different scenarios. These scenarios consider a network of 11 users, consisting of 8 beds and 3 devices carried by babies. Results were obtained using the conventional correlation receiver without and with hard limiters, as well as a parallel interference cancellation receiver to reduce the impact of MAI. Additionally, the feasibility of implementing OCDMA technology for simultaneous optical wireless communication transmission was demonstrated through experimental work using a test bench developed in software-defined radio. The test bench was established using universal software radio peripheral (USRP), and specially designed wireless optical front-ends
Libros sobre el tema "Codes orthogonaux"
Semerciler, Salih. Coded orthogonal signaling. Monterey, Calif: Naval Postgraduate School, 1992.
Buscar texto completoLiang, Guan Yong y Tjhung Tjeng Thiang, eds. Quasi-orthogonal space-time block code. London: Distributed by World Scientific, 2007.
Buscar texto completoStevens, Janet Emerson. Trellis coded modulation applied to orthogonal signals. Monterey, Calif: Naval Postgraduate School, 1993.
Buscar texto completoPetroutsos, Alexander. Optical orthogonal codes for use in a CDMA fibre optic LAN. Manchester: UMIST, 1995.
Buscar texto completoRoderick, David V. A coded orthogonal frequency division multiplexing simulation of a high data rate, line-of-sight, digital radio for mobile maritime communications. Monterey, Calif: Naval Postgraduate School, 1997.
Buscar texto completo1952-, Hanzo Lajos, ed. OFDM and MC-CDMA for broadband multi-user communications, WLANs, and broadcasting. [Piscataway, N.J.]: IEEE Press, 2003.
Buscar texto completoBattle of wits: The complete story of codebreaking in World War II. New York: Simon & Schuster, 2002.
Buscar texto completoBudiansky, Stephen. Battle of wits: The complete story of codebreaking in World War II. New York: Free Press, 2000.
Buscar texto completoBudiansky, Stephen. Battle of wits: The complete story of codebreaking in World War II. New York: Free Press, 2000.
Buscar texto completoBattle of wits: The complete story of codebreaking in World War II. New York: Free Press, 2000.
Buscar texto completoCapítulos de libros sobre el tema "Codes orthogonaux"
Grolmusz, Vince. "Co-orthogonal Codes". En Lecture Notes in Computer Science, 144–52. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-45655-4_17.
Texto completoMienkina, M. P., C. S. Friedrich, N. C. Gerhardt, M. R. Hofmann y Georg Schmitz. "Multispectral Photoacoustic Coded Excitation using Orthogonal Unipolar Golay Codes". En IFMBE Proceedings, 217–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03879-2_61.
Texto completoMonroe, Laura. "Self-Orthogonal Greedy Codes". En Codes, Designs and Geometry, 75–79. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-1423-3_7.
Texto completoTamm, Ulrich. "Communication complexity and orthogonal polynomials". En Codes and Association Schemes, 277–85. Providence, Rhode Island: American Mathematical Society, 2001. http://dx.doi.org/10.1090/dimacs/056/21.
Texto completoOmrani, Reza, Oscar Moreno y P. Vijay Kumar. "Topics on Optical Orthogonal Codes". En Sequences and Their Applications - SETA 2004, 396–405. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11423461_30.
Texto completoFumy, W. "Orthogonal transform encoding of cyclic codes". En Algebraic Algorithms and Error-Correcting Codes, 131–34. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/3-540-16776-5_715.
Texto completoHedayat, A. S., N. J. A. Sloane y John Stufken. "Orthogonal Arrays and Error-Correcting Codes". En Springer Series in Statistics, 61–86. New York, NY: Springer New York, 1999. http://dx.doi.org/10.1007/978-1-4612-1478-6_4.
Texto completoHedayat, A. S., N. J. A. Sloane y John Stufken. "Construction of Orthogonal Arrays from Codes". En Springer Series in Statistics, 87–111. New York, NY: Springer New York, 1999. http://dx.doi.org/10.1007/978-1-4612-1478-6_5.
Texto completoWu, Dianhua, Jiayun Cao y Pingzhi Fan. "New Optimal Variable-Weight Optical Orthogonal Codes". En Sequences and Their Applications – SETA 2010, 102–12. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-15874-2_8.
Texto completoBitan, Sara y Tuvi Etzion. "On constructions for optimal optical orthogonal codes". En Algebraic Coding, 111–25. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/3-540-57843-9_13.
Texto completoActas de conferencias sobre el tema "Codes orthogonaux"
Harman, S. A. "Orthogonal polyphase code sets with master codes". En 2004 International Waveform Diversity & Design Conference. IEEE, 2004. http://dx.doi.org/10.1109/iwddc.2004.8317552.
Texto completoWu, Weiqi, Ammar Hawbani y Wei Gong. "Ortho-CodeA: Orthogonal Codes Assisted Backscatter Multiple Access". En 2023 IEEE International Conference on Pervasive Computing and Communications (PerCom). IEEE, 2023. http://dx.doi.org/10.1109/percom56429.2023.10099216.
Texto completoChee, Yeow Meng, Han Mao Kiah, San Ling y Hengjia Wei. "Geometric orthogonal codes better than optical orthogonal codes". En 2017 IEEE International Symposium on Information Theory (ISIT). IEEE, 2017. http://dx.doi.org/10.1109/isit.2017.8006758.
Texto completoCardinal, Christian y Bakitanga-Florian Mvutu. "Coded M-PSK Modulation using Convolutional Self-Doubly Orthogonal Codes". En 2009 IEEE 69th Vehicular Technology Conference Spring. IEEE, 2009. http://dx.doi.org/10.1109/vetecs.2009.5073447.
Texto completoWen, James Z., Yang Tao y Xiangyang Yang. "Crosstalk in phase-coded holographic memories using different orthogonal codes". En Optical Science, Engineering and Instrumentation '97, editado por Francis T. S. Yu y Shizhuo Yin. SPIE, 1997. http://dx.doi.org/10.1117/12.287776.
Texto completoGevers, Martin, Patrik Gebhardt, Michael Vogt y Thomas Musch. "Code-division-multiplexing using orthogonal codes for fast electrical impedance tomography". En 2014 IEEE International Instrumentation and Measurement Technology Conference (I2MTC). IEEE, 2014. http://dx.doi.org/10.1109/i2mtc.2014.6860919.
Texto completoLiva, Gianluigi, Balazs Matuz, Enrico Paolini y Mark F. Flanagan. "Non-binary LDPC codes for orthogonal modulations: Analysis and code design". En ICC 2017 - 2017 IEEE International Conference on Communications. IEEE, 2017. http://dx.doi.org/10.1109/icc.2017.7996749.
Texto completoKim, Sang-Min, Jae-Hee Song y Tai-Kyong Song. "Harmonic Golay coded excitation using mutually orthogonal Golay codes and pulse inversion". En SPIE Medical Imaging, editado por Stephen A. McAleavey y Jan D'hooge. SPIE, 2009. http://dx.doi.org/10.1117/12.811550.
Texto completoMienkina, Martin P., Annika Eder, Georg Schmitz, Claus-Stefan Friedrich, Nils C. Gerhardt y Martin R. Hofmann. "Feasibility study of multispectral photoacoustic coded excitation using orthogonal unipolar Golay codes". En 2009 IEEE International Ultrasonics Symposium. IEEE, 2009. http://dx.doi.org/10.1109/ultsym.2009.5441941.
Texto completoIhan Martoyo, Philip, Andi Susanto, Eddy Wijanto, Herman Kanalebe y Kuniwati Gandi. "Chaos codes vs. orthogonal codes for CDMA". En Applications (ISSSTA). IEEE, 2010. http://dx.doi.org/10.1109/isssta.2010.5652316.
Texto completoInformes sobre el tema "Codes orthogonaux"
Kondrashov, Dmitri, Joseph Wang y Paulette C. Liewer. A Study of Stability and Energy Conservation of a 3-D Electromagnetic PIC Code for Non-Orthogonal Meshes. Fort Belvoir, VA: Defense Technical Information Center, enero de 1997. http://dx.doi.org/10.21236/ada357700.
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