Academic literature on the topic 'Optical orthogonal codes (OOC)'
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Journal articles on the topic "Optical orthogonal codes (OOC)"
Kumar, Ankit, Manisha Bharti, and Tanya Kumar. "Performance Investigation of 2-D Optical Orthogonal Codes for OCDMA." Journal of Optical Communications 40, no. 4 (October 25, 2019): 455–62. http://dx.doi.org/10.1515/joc-2017-0112.
Full textLi, X. B., H. B. Huang, and L. C. Wang. "Discussion on Construction of OCDMA PON Address Code-(F,K,2) Optical Orthogonal Codes." Advanced Materials Research 216 (March 2011): 804–8. http://dx.doi.org/10.4028/www.scientific.net/amr.216.804.
Full textAsif, Muhammad, Wuyang Zhou, Qingping Yu, Xingwang Li, and Nauman Ali Khan. "A Deterministic Construction for Jointly Designed Quasicyclic LDPC Coded-Relay Cooperation." Wireless Communications and Mobile Computing 2019 (September 26, 2019): 1–12. http://dx.doi.org/10.1155/2019/5249373.
Full textBaicheva, Tsonka, and Svetlana Topalova. "Maximal (v, k, 2, 1) Optical Orthogonal Codes with k = 6 and 7 and Small Lengths." Mathematics 11, no. 11 (May 26, 2023): 2457. http://dx.doi.org/10.3390/math11112457.
Full textBouregaa, Mouweffeq, Mohammed El Kebir Chikh-Bled, Mohammed Debbal, Mohammed Chamse Eddine Ouadah, and Hicham Chikh-Bled. "Optical Code Division Multiple Access for FTTH system." Photonics Letters of Poland 10, no. 4 (December 31, 2018): 121. http://dx.doi.org/10.4302/plp.v10i4.861.
Full textChee, Yeow Meng, Han Mao Kiah, San Ling, and Hengjia Wei. "Geometric Orthogonal Codes of Size Larger Than Optical Orthogonal Codes." IEEE Transactions on Information Theory 64, no. 4 (April 2018): 2883–95. http://dx.doi.org/10.1109/tit.2017.2788140.
Full textMurad, Mohsin, Imran A. Tasadduq, and Pablo Otero. "Coded-GFDM for Reliable Communication in Underwater Acoustic Channels." Sensors 22, no. 7 (March 30, 2022): 2639. http://dx.doi.org/10.3390/s22072639.
Full textSheng Peng Wan and Yu Hu. "Two-dimensional optical CDMA differential system with prime/OOC codes." IEEE Photonics Technology Letters 13, no. 12 (December 2001): 1373–75. http://dx.doi.org/10.1109/68.969912.
Full textArgon, Cenk. "Semi-randomly constructed optical orthogonal codes." Optics Communications 282, no. 4 (February 2009): 500–503. http://dx.doi.org/10.1016/j.optcom.2008.10.043.
Full textChang, Yanxun, and Ying Miao. "Constructions for optimal optical orthogonal codes." Discrete Mathematics 261, no. 1-3 (January 2003): 127–39. http://dx.doi.org/10.1016/s0012-365x(02)00464-8.
Full textDissertations / Theses on the topic "Optical orthogonal codes (OOC)"
Isaksson, Erica. "Cardinality for optical orthogonal codes with variable length and weight." Thesis, Linköping University, Department of Electrical Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-7672.
Full textTo let many users benefit from the high speed communication in an optical fiber, a way to share the channel is needed. One way to share the channel between the users is the multiple access technique of Code Division Multiple Access, CDMA. This technique is based on coding. By assigning the users different codewords, the receiver is able to distinguish the information sent from each user. One family of codes suitable to use in a fiber optic network is the constant weight Optical Orthogonal Codes, OOC.
To influence the users interference tolerability it is possible to assign the users codewords of the same length but with different weights. By letting the users have codewords of different length it is possible to have different data rates in the system. These two versions of optical orthogonal codes, with variable length and weight, are investigated in this thesis for their cardinality. The variable weight and variable length codes were created by combining optical orthogonal codes with different parameters.
I have found that for variable length OOC:s of weight 2 it seems to be possible to increase the cardinality of a code, but for codes with higer weights than that, it is better that all users are assigned codewords of the same length. But since an upper bound for the cardinality of these types of codes has not been found, it is not possible to verify if this conclusion is correct. For variable weight OOC:s it is found that it is only possible to increase the cardinality of small, not optimal, codes. For codes including many codewords it is rarely possible to include more codewords without breaking the conditions on cross correlation between the codewords.
Karlsson, Andreas. "Simulation of a CDMA system based on optical orthogonal codes." Thesis, Linköping University, Department of Electrical Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2300.
Full textTo take advantage of the high speed in an optic fiber, one of the basic concept in fiber optic communication is to allow several users to simultaneously transmit data over the channel. One technique that provides multiple access is it fiber optic-code division multiple access (FO-CDMA). In FO-CDMA each user is assigned one or more signature sequences called codewords, which are subsets of a type of optical orthogonal code (OOC). The channel input/output consists of the superposition of several users codewords and at the receiver end an optical correlator extracts the information.
In the parallel code constructions, presented in this report, each user j is assigned a subset Cj from a code C. The subsets are disjoint and their union is the whole set C. A new way to map the information bits is to insert up to L zeros before each codeword from Cj and let this represent information aswell. This gives high rates for active users but an investigation is needed to ensure that this does not compromise the systems wanted property of sending information with a small probability of errors for all users. Therefore a simulation environment has been implemented in Matlab.
The result from these simulations shows that BER for the L parallel codes is acceptable and not much higher than for the traditional constructions. Because of the higher rate these construction should be preferred but an analysis if a hardware implementation is possible.
Boussebt, 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.
Full textThe 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
Mustapha, Mazlyn Mona. "Non-coherent optical fibre-based CDMS using optical orthogonal codes." Thesis, Cranfield University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.435041.
Full textSawa, Masanori. "Optical Orthogonal Signature Pattern Codes with Maximum Collision Parameter 2 and Weight 4." IEEE, 2010. http://hdl.handle.net/2237/14501.
Full textAbaza, Mohamed. "Cooperative MIMO techniques for outdoor optical wireless communication systems." Thesis, Brest, 2015. http://www.theses.fr/2015BRES0073/document.
Full textFree-space optical (FSO) communication has been the subject of ongoing research activities and commercial attention in the past few years. Such attention is driven by the promise of high data rate, license-free operation, and cheap and ecological friendly means of communications alternative to congested radio frequency communications. In most previous work considering multiple transmitters, uncorrelated channel conditions have been considered. An uncorrelated channel requires sufficient spacing between transmitters. However, this can be difficult and may not be always feasible in some applications. Thereby, this thesis studies repetition codes (RCs) and orthogonal space-time block codes performance in correlated log-normal FSO channels using intensity modulation and direct detection (IM/DD). Furthermore, the effect of different weather conditions on the average bit error rate (ABER) performance of the FSO links is studied. Multiple-input multiple-output (MIMO) FSO communication systems using space shift keying (SSK) modulation have been also analyzed. Obtained results show that SSK is a potential technique for spectral efficiencies equal or greater than 4 bits/s/Hz as compared to RCs with multiple pulse amplitude modulations. The performance analysis of a multi-hop decode and forward relays for FSO communication system using IM/DD is also considered in this thesis. It is shown that multi-hop is an efficient technique to mitigate atmospheric turbulence and different weather attenuation effects and geometric losses in FSO communication systems. Our simulation results show that multiple-input single-output (MISO) multi-hop FSO systems are superior to direct link and MISO systems over links exhibiting high attenuation. Meeting the growing demand for higher data rates communication networks, a system with full-duplex (FD) relays is considered. For such a system, the outage probability and the ABER performance are analyzed under different turbulence conditions, misalignment error and path loss effects. FD relays are compared with the direct link and half-duplex relays. Obtained results show that FD relays have the lowest ABER and the outage probability as compared to the two other systems. Finally, the obtained results in this thesis are very promising towards the next generation of FSO systems
Zou, Ding, and Ding Zou. "FPGA-Based LDPC Coded Modulations for Optical Transport Networks." Diss., The University of Arizona, 2017. http://hdl.handle.net/10150/622985.
Full textShivaleela, E. S. "Design Of Two Dimensional Codes For Fiber-Optic CDMA Networks." Thesis, 1996. https://etd.iisc.ac.in/handle/2005/1892.
Full textShivaleela, E. S. "Design Of Two Dimensional Codes For Fiber-Optic CDMA Networks." Thesis, 1996. http://etd.iisc.ernet.in/handle/2005/1892.
Full textChiang, Kun-Ling, and 江昆霖. "Spatial/Spectral Optical CDMA Systems Using Two-Dimensional OOC/M-Sequence Codes." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/jrd25g.
Full text國立中興大學
電機工程學系所
99
In this thesis, a family of new two-dimensional optical codes, so called OOC/M-sequence codes, is proposed for spectral-amplitude-coding optical code-division multiple access. A new 2-D spatial/spectral transceiver structure, which employs the multiple-access-interfering canceling property of the new codes, is also presented. Comparing with a former system using M-matrices codes, our analysis and numerical results show that the proposed system is better in suppressing phase-induced intensity noise and more flexible in choosing code length, and also supports more active user for a given error probability.
Books on the topic "Optical orthogonal codes (OOC)"
Petroutsos, Alexander. Optical orthogonal codes for use in a CDMA fibre optic LAN. Manchester: UMIST, 1995.
Find full textBook chapters on the topic "Optical orthogonal codes (OOC)"
Omrani, Reza, Oscar Moreno, and P. Vijay Kumar. "Topics on Optical Orthogonal Codes." In Sequences and Their Applications - SETA 2004, 396–405. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11423461_30.
Full textWu, Dianhua, Jiayun Cao, and Pingzhi Fan. "New Optimal Variable-Weight Optical Orthogonal Codes." In 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.
Full textBitan, Sara, and Tuvi Etzion. "On constructions for optimal optical orthogonal codes." In Algebraic Coding, 111–25. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/3-540-57843-9_13.
Full textOmrani, Reza, Petros Elia, and P. Vijay Kumar. "New Constructions and Bounds for 2-D Optical Orthogonal Codes." In Sequences and Their Applications - SETA 2004, 389–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11423461_29.
Full textAlderson, T. L., and Keith E. Mellinger. "Optical orthogonal codes from Singer groups." In Series on Coding Theory and Cryptology, 51–69. WORLD SCIENTIFIC, 2007. http://dx.doi.org/10.1142/9789812772022_0004.
Full textConference papers on the topic "Optical orthogonal codes (OOC)"
Ji, Jianhua, Zhao Luo, Hongxia Zheng, Wenjun Li, Ke Wang, Ming Xu, and Shuwen Yang. "A new family of two-dimensional optical orthogonal codes with zero cross-correlation zone." In 2015 Optoelectronics Global Conference (OGC). IEEE, 2015. http://dx.doi.org/10.1109/ogc.2015.7336824.
Full textChee, Yeow Meng, Han Mao Kiah, San Ling, and Hengjia Wei. "Geometric orthogonal codes better than optical orthogonal codes." In 2017 IEEE International Symposium on Information Theory (ISIT). IEEE, 2017. http://dx.doi.org/10.1109/isit.2017.8006758.
Full textKhurana, Ritu, and Gurjit Kaur. "Performance comparison of OOC codes at various receivers for OCDMA system." In 2010 10th International Conference on Laser and Fiber-Optical Networks Modeling (LFNM). IEEE, 2010. http://dx.doi.org/10.1109/lfnm.2010.5624239.
Full textMoreno, O., P. V. Kumar, Hsiao-feng Lu, and R. Omrani. "New constructions for optical orthogonal codes, distinct difference sets and synchronous optical orthogonal codes." In IEEE International Symposium on Information Theory, 2003. Proceedings. IEEE, 2003. http://dx.doi.org/10.1109/isit.2003.1228342.
Full textMartirosyan, Samvel, A. J. Han Vinck, and Ashot N. Harutyunyan. "On Optical Orthogonal, Cyclically Permutable, and Super Optical Orthogonal Codes." In 2007 IEEE International Symposium on Information Theory. IEEE, 2007. http://dx.doi.org/10.1109/isit.2007.4557579.
Full textZhao, Na, and Nam Yul Yu. "Design of new fingerprinting codes using optical orthogonal codes." In 2015 21st Asia-Pacific Conference on Communications (APCC). IEEE, 2015. http://dx.doi.org/10.1109/apcc.2015.7412529.
Full textTaketomi, Yoshinao, Joseph E. Ford, Hironori Sasaki, Jian Ma, Yeshayahu Fainman, Sing H. Lee, and Jack Feinberg. "Hologram multiplexing using orthogonal phase codes and incremental recording." In Optical Computing. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/optcomp.1991.wa2.
Full textOmrani, R., H. Lu, O. Moreno, and P. V. Kumar. "Construction of low density parity check codes from optical orthogonal codes." In IEEE International Symposium on Information Theory, 2003. Proceedings. IEEE, 2003. http://dx.doi.org/10.1109/isit.2003.1228074.
Full textChung, Jin-Ho, and Kyeongcheol Yang. "New construction of asymptotically optimal optical orthogonal codes." In 2015 IEEE Information Theory Workshop - Fall (ITW). IEEE, 2015. http://dx.doi.org/10.1109/itwf.2015.7360748.
Full textMaity, Goutam Kumar, and Santi P. Maity. "Realization of orthogonal codes in optical information processing." In 2012 Third International Conference on Emerging Applications of Information Technology (EAIT). IEEE, 2012. http://dx.doi.org/10.1109/eait.2012.6407930.
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