The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Sistem CDMA optikal (OCDMA) ialah teknologi yang fleksibel untuk rangkaian capaian berbilang jalur lebar masa hadapan. Rangkaian OCDMA yang selamat dalam teknologi capaian optik jalur lebar juga menjadi isu yang sangat penting. Dalam makalah ini, kami mencadangkan kod optik masa panjang gelombang (WT) yang boleh dikonfigurasikan semula yang membawa kepada penghantaran selamat dalam rangkaian OCDMA. Kod optik WT yang dicadangkan dibina dengan menggunakan quasigroups (QGs) untuk lompatan panjang gelombang dan kod ortogonal optik satu dimensi (OOC) untuk penyebaran masa; kami memanggil mereka QGs/OOCs. Kedua-dua QG dan OOC dijana secara rawak oleh carian komputer untuk memastikan bahawa penyadap tidak dapat meningkatkan prestasi pemintasannya dengan menggunakan struktur pengekodan. Kemudian, QG/OOC yang boleh dikonfigurasikan semula yang dicadangkan boleh menyediakan lebih banyak kata kod dan banyak corak set kod yang berbeza, yang berbeza dalam kedua-dua kedudukan panjang gelombang dan masa untuk parameter kod yang diberikan. Selain itu, kebarangkalian ralat bit bagi kod yang dicadangkan dianalisis secara berangka. Untuk merealisasikan kod yang dicadangkan, sistem selamat dicadangkan dengan menggunakan pengekod/penyahkod boleh dikonfigurasikan semula berdasarkan kisi pandu gelombang tatasusunan (AWG), yang membolehkan pengguna menukar corak kata kod mereka untuk melindungi daripada mencuri dengar. Akhir sekali, kebarangkalian untuk memecahkan kata kod tertentu dalam sistem yang dicadangkan dinilai secara analitikal. Keputusan menunjukkan bahawa kod dan sistem yang dicadangkan boleh menyediakan corak kata kod yang besar, dan mengurangkan kebarangkalian untuk memecahkan kata kod tertentu, untuk meningkatkan keselamatan rangkaian OCDMA.
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Salinan
NASARUDDIN, Tetsuo TSUJIOKA, "A Novel Design of Reconfigurable Wavelength-Time Optical Codes to Enhance Security in Optical CDMA Networks" in IEICE TRANSACTIONS on Communications,
vol. E91-B, no. 8, pp. 2516-2524, August 2008, doi: 10.1093/ietcom/e91-b.8.2516.
Abstract: An optical CDMA (OCDMA) system is a flexible technology for future broadband multiple access networks. A secure OCDMA network in broadband optical access technologies is also becoming an issue of great importance. In this paper, we propose novel reconfigurable wavelength-time (W-T) optical codes that lead to secure transmission in OCDMA networks. The proposed W-T optical codes are constructed by using quasigroups (QGs) for wavelength hopping and one-dimensional optical orthogonal codes (OOCs) for time spreading; we call them QGs/OOCs. Both QGs and OOCs are randomly generated by a computer search to ensure that an eavesdropper could not improve its interception performance by making use of the coding structure. Then, the proposed reconfigurable QGs/OOCs can provide more codewords, and many different code set patterns, which differ in both wavelength and time positions for given code parameters. Moreover, the bit error probability of the proposed codes is analyzed numerically. To realize the proposed codes, a secure system is proposed by employing reconfigurable encoders/decoders based on array waveguide gratings (AWGs), which allow the users to change their codeword patterns to protect against eavesdropping. Finally, the probability of breaking a certain codeword in the proposed system is evaluated analytically. The results show that the proposed codes and system can provide a large codeword pattern, and decrease the probability of breaking a certain codeword, to enhance OCDMA network security.
URL: https://global.ieice.org/en_transactions/communications/10.1093/ietcom/e91-b.8.2516/_p
Salinan
@ARTICLE{e91-b_8_2516,
author={NASARUDDIN, Tetsuo TSUJIOKA, },
journal={IEICE TRANSACTIONS on Communications},
title={A Novel Design of Reconfigurable Wavelength-Time Optical Codes to Enhance Security in Optical CDMA Networks},
year={2008},
volume={E91-B},
number={8},
pages={2516-2524},
abstract={An optical CDMA (OCDMA) system is a flexible technology for future broadband multiple access networks. A secure OCDMA network in broadband optical access technologies is also becoming an issue of great importance. In this paper, we propose novel reconfigurable wavelength-time (W-T) optical codes that lead to secure transmission in OCDMA networks. The proposed W-T optical codes are constructed by using quasigroups (QGs) for wavelength hopping and one-dimensional optical orthogonal codes (OOCs) for time spreading; we call them QGs/OOCs. Both QGs and OOCs are randomly generated by a computer search to ensure that an eavesdropper could not improve its interception performance by making use of the coding structure. Then, the proposed reconfigurable QGs/OOCs can provide more codewords, and many different code set patterns, which differ in both wavelength and time positions for given code parameters. Moreover, the bit error probability of the proposed codes is analyzed numerically. To realize the proposed codes, a secure system is proposed by employing reconfigurable encoders/decoders based on array waveguide gratings (AWGs), which allow the users to change their codeword patterns to protect against eavesdropping. Finally, the probability of breaking a certain codeword in the proposed system is evaluated analytically. The results show that the proposed codes and system can provide a large codeword pattern, and decrease the probability of breaking a certain codeword, to enhance OCDMA network security.},
keywords={},
doi={10.1093/ietcom/e91-b.8.2516},
ISSN={1745-1345},
month={August},}
Salinan
TY - JOUR
TI - A Novel Design of Reconfigurable Wavelength-Time Optical Codes to Enhance Security in Optical CDMA Networks
T2 - IEICE TRANSACTIONS on Communications
SP - 2516
EP - 2524
AU - NASARUDDIN
AU - Tetsuo TSUJIOKA
PY - 2008
DO - 10.1093/ietcom/e91-b.8.2516
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E91-B
IS - 8
JA - IEICE TRANSACTIONS on Communications
Y1 - August 2008
AB - An optical CDMA (OCDMA) system is a flexible technology for future broadband multiple access networks. A secure OCDMA network in broadband optical access technologies is also becoming an issue of great importance. In this paper, we propose novel reconfigurable wavelength-time (W-T) optical codes that lead to secure transmission in OCDMA networks. The proposed W-T optical codes are constructed by using quasigroups (QGs) for wavelength hopping and one-dimensional optical orthogonal codes (OOCs) for time spreading; we call them QGs/OOCs. Both QGs and OOCs are randomly generated by a computer search to ensure that an eavesdropper could not improve its interception performance by making use of the coding structure. Then, the proposed reconfigurable QGs/OOCs can provide more codewords, and many different code set patterns, which differ in both wavelength and time positions for given code parameters. Moreover, the bit error probability of the proposed codes is analyzed numerically. To realize the proposed codes, a secure system is proposed by employing reconfigurable encoders/decoders based on array waveguide gratings (AWGs), which allow the users to change their codeword patterns to protect against eavesdropping. Finally, the probability of breaking a certain codeword in the proposed system is evaluated analytically. The results show that the proposed codes and system can provide a large codeword pattern, and decrease the probability of breaking a certain codeword, to enhance OCDMA network security.
ER -