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The work in this paper is a simulation experiment performed by a computer program to determine the OCDMA system parameters limitations. The system was built up with LED light source in the transmitter with filters to construct the code where the receiver is constructed based on AND-subtraction detection scheme. The system was designed to be compatible with the enhanced double weight (EDW) code, passive optical network (PON), P2P network connection and fiber to the home (FTTH) topology. Five system parameters were considered in this work: the number of users, the transmission distance, the bitrate, the chip spacing and the transmitted power. Optisys 6.0 software program was used as a simulator; the simulator considered the entire practical effects in the system, like nonlinearities, attenuation in the fiber and dispersion. This paper shows that for sufficient system performance parameters (BER ? 1×10–9, Q ? 6) the system can stand for the maximum number of 3 users, the maximum distance of 21 km and the minimum chip spacing of 0.2. The system also shows that it cannot work for any number of users or any distance without the amplifier.
Słowa kluczowe
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Rocznik
Tom
Strony
669--676
Opis fizyczny
Bibliogr. 10 poz.
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autor
autor
autor
- Photonics Technology Laboratory, Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan, Malaysia 43600 UKM, Bangi, Selangor, Malaysia
Bibliografia
- [1] JIANG Z., SEO D.S., YANG S.-D., LEAIRD D.E., ROUSSEV R.V., LANGROCK C., FEJER M.M.,WEINER A.M., Four-user, 2.5-Gb/s, spectrally coded OCDMA system demonstration using low-power nonlinear processing, Journal of Lightwave Technology 23(1), 2005, pp. 143–158.
- [2] AZMI P., NASIRI-KENARI M., SALEHI J.A., Low-rate super-orthogonal channel coding for fiber-optic CDMA communication systems, Journal of Lightwave Technology 19(6), 2001 pp. 847–855.
- [3] SMITH E.D.J., BLAIKIE R.J., TAYLOR D.P., Performance enhancement of spectral-amplitude-coding optical CDMA using pulse-position modulation, IEEE Transactions on Communications 46(9), 1998,pp. 1176–1185.
- [4] ZOU WEI, GHAFOURI-SHIRAZ H., Proposal of a novel code for spectral amplitude-coding optical CDMA systems, IEEE Photonics Technology Letters 14(3), 2002, pp. 414–416.
- [5] ZACCARIN D., KAVEHRAD M., New architecture for incoherent optical CDMA to achieve bipolar capacity, Electronics Letters 30(3), 1994, pp. 258–259.
- [6] HASOON F.N., ALJUNID S.A., SAMAD M.D.A., ABDULLAH M.K., SHAARI S., Spectral amplitude coding OCDMA using AND subtraction technique, Applied Optics 47(9), 2008, pp. 1263–1268.
- [7] ZOU WEI, SHALABY H.M.H., GHAFOURI-SHIRAZ H., Modified quadratic congruence codes for fiber Bragg-grating-based spectral-amplitude-coding optical CDMA systems, Journal of Lightwave Technology 19(9), 2001, pp. 1274–1281.
- [8] HASOON F.N., ABDULLAH M.K., ALJUNID S.A., SHAARI S., Performance of OCDMA systems using a complementary subtraction technique, Journal of Optical Networking 6(7), 2007, pp. 854–859.676 I.SH. HMUD, F.N. HASOON, S. SHAARI
- [9] IHSSAN SH. HMUD, F.N. HASOON, S.A. ALJUNID, SAHBUDIN SHAARI, Performance of OCDMA system using AND subtraction technique based on EDW code, Journal of Optical Communications 29(3),2008, pp. 178–181.
- [10] HASOON F.N., MOHAMAD KHAZANI ABDULLAH, ALJUNID S.A., SAHBUDIN SHAARI, Construction of a new code for spectral amplitude coding in optical code-division multiple-access systems,Optical Engineering 46(7), 2007, p. 75004.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPW7-0014-0015