Construction and performance research on variable-length codes for multirate OCDMA multimedia networks

Abstract

A new kind of variable-length codes with good correlation properties for the multirate asynchronous optical code division multiple access (OCDMA) multimedia networks is proposed, called non-repetition interval (NRI) codes. The NRI codes can be constructed by structuring the interval-sets with no repetition, and the code length depends on the number of users and the code weight. According to the structural characteristics of NRI codes, the formula of bit error rate (BER) is derived. Compared with other variable-length codes, the NRI codes have lower BER. A multirate OCDMA multimedia simulation system is designed and built, the longer codes are assigned to the users who need slow speed, while the shorter codes are assigned to the users who need high speed. It can be obtained by analyzing the eye diagram that the user with slower speed has lower BER, and the conclusion is the same as the actual demand in multimedia data transport.

Keywords

Code Length / Code Weight / Simultaneous User / Short Code / Optical Code Division Multiple Access

References

[1] TangadeS S, ShivaleelaE SBetter Quality of Servies in Multimedia Transmission by Using Wavelength/Time Single-Pulse-per-Row Encoding Technique in OCDMA NetworksIEEE India Conference, 2012, 525

[2] SahuguedeS, MorelleM, Julien-VergonjanneA, CancesJ-PMulti-Rate and QoS Differentiation in Optical Code Division Multiple Access NetworksConsumer Communications and Networking Conference, 2008, 581

[3] ShaarA A, DavisP A. Electronics Letter, 1983, 19: 888

[4] ChauhanR C S, KumarR, ShuklaM, SighA K, BagariaG PProposal for One Dimensional Optical Orthogonal Codes: Design, Analysis, & AlgorithmCommunication Systems and Network Technologies, 2011, 514

[5] AnamanJ O, PrinceSCorrelation Properties and Performance Evaluation of 1-Dimensional OOC’s for OCDMAInternational Conference on Devices, Circuits and Systems, 2012, 167

[6] LiX, ShiYConstruction of Variable-Weight Optical Orthogonal Codes for OCDMA Passive Optical NetworkIEEE 11th International Conference on Signal Processing, 2012, 1

[7] LiC-q, XiaQ, ZhangY, ZhouY-y. Optoelectronics Letters, 2009, 5: 372

[8] VardakasJ S, MoscholiosI D. IEEE Transactions on Communications, 2013, 61: 3374

[9] Lic, Huj, Hed, Chenm, Wangd, Cheny. Optoelectronics Letters, 2013, 9: 473

[10] WangY-F, NovelAOVSF-based Multi-rate OCDMA-PON and Its Optimal ConfigurationInformation Security and Intelligence Control, 2012, 133

[11] VardakasJ S, MoscholiosyI D, LogothetisM D, StylianakisV GOn Code Reservation in Multi-Rate OCDMA Passive Optical Networks8th IEEE IET International Symposium on Communication Systems, Networks and Digital Signal Processing, 2012, 1

[12] LiuX-l, EnD, WangL-g. Journal of Optoelectronics ·Laser, 2014, 25: 876

[13] KwongW C, YangG C. IEEE Transactions on Communications, 2002, 50: 1258

[14] MatsumotoR, KodamaT, ShimizuS, NomuraR, OmichiK, WadaN, KitayamaK-iApodized SSFBG Encoder/Decoder for 40G-OCDMA-PON SystemOptoElectronics and Communications Conference, 2013, 1

Just Accepted

This article has successfully passed peer review and final editorial review, and will soon enter typesetting, proofreading and other publishing processes. The currently displayed version is the accepted final manuscript. The officially published version will be updated with format, DOI and citation information upon launch. We recommend that you pay attention to subsequent journal notifications and preferentially cite the officially published version. Thank you for your support and cooperation.