IJSER Home >> Journal >> IJSER
International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 1    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 1,January 2012
Eight User, 4Gb/s, Spectral Phase-Encoded OCDMA System in time domain for Metropolitan area Network
Full Text(PDF, )  PP.183-188  
Savita R.Bhosale Dr. S. L. Nalbalwar and Dr. S.B.Deosarkar
In optical code division multiple access (OCDMA) system, many users share the same transmission medium by assigning unique pseudo-random optical code (OC) to each user. OCDMA is attractive for next generation broadband access networks due to its features of allowing fully asynchronous transmission with low latency access, soft capacity on demand, protocol transparency, simplified network management as well as increased flexibility of QoS control and enhanced confidentiality in the network. Hence, in this paper, we proposed a technique using spectral phase encodingin time domain for eight users. This technique is proved to be much effective to handle eight users at 4 Gb/s bit rate for Metropolitan area Network (MAN). Results indicate significant improvement in term Beat Error Rate (BER) and very high quality factor in the form of Quality of Service (QoS). In our analysis, we have used Pseudo Orthogonal (PSO) codes. The simulations are carried out using OptSim (RSOFT).
[1] to k n E. H. r nt, ― rol of opt l MA n ss n tworks‖, IEEE Communication Magazine40, 83-87 (2002).

[2] K. K t y m , X. W n , n H. oto y s , ― t t of t rt n ppl t ons of opt l o v s on mult pl ss (Inv t ),‖ n ECOC’04, (Stockholm, Sweden, 2004), Tu4.6.

[3] X. W n n K. K t y m , ―An lys s of t no s n coherent and incoherent time-spr n O MA,‖ J. Lightwave Technol 22, 2226-2235, (2004).

[4] . H. k , ― onf nt l ty p rform n of sp tr l-phase-encoded opt l MA‖, J. Lightwave Technol. 23, 1652–1663, (2005).

[5] D. E. Leaird, Z Jiang, and A. M. Wein r, ―Exp r m nt l nv st t on of security issues in OCDMA: a code-sw t n s m ‖, Electron. Lett. 41, 817-819, (2005).

[6] X. W n , N. W , . M y z k , n K. K t y m , ― o r nt O MA syst m us n P K t form t w t l n t t on‖, IEEE Photonic Technol. Lett.18, 826-828, (2006).

[7] Z. G o, X W n , N. K t ok n N. W , ― monstr t on of t m - domain spectral phase encoding/DPSK data modulation using single p s mo ul tor‖, to pr s nt n LEOS Summer Topical 2009, New port, CA, USA,2009.

[8] Z. Jiang, D. Seo, S. Yang, D. E. Leaird, R. V. Roussev, C. Langrock, M. M. F j r, n A. M. W n r, ―Four-user 10-Gb/s spectrally phase-coded O- MA syst m op r t n t 30 fJ/ t‖ IEEE Photonics Technol. Lett., 17, 705-707, (2005).

[9] Xu W n n N oy W ― econfigurable Time Domain Spectral Phase Encoding/Decoding Scheme Using Fibre Bragg Gratings for Two- m ns on l o r nt O MA‖, ECOC’08, P.3.11, September Brussels, Belgium,2008.

[10] Xu Wang and Naoya Wada.. "Spectral phase encoding of ultra-short optical pulse in time domain for OCDMA application", Optics Express 15(12):7319-7326 (2007).

[11] X. W n , K. M tsus m , A. N s k , N. W , n K. K t y m , ―H reflectivitysuperstructured FBG for coherent optical code n r t on n r o n t on‖,Optics Express12, 5457-5468, (2004).

[12] Al n E W lln r, Poory r , V . Ar , ―A v n techniques to increase the number of users and bit rate in OCDMA n tworks,‖ IEEE Journal of Selected Topics in quantum Electronics , vol.13,2007, pp.1403-1414

[13] A. J. Mendez, R. M. Gagliardi, V. J. Hernandez, C. V. Bennet and W. J. L nnon, ―H -performance optical CDMA system based on 2-D optical ort o on l o s,‖ IEEE Journal of Lightwave Technology,vol. 22, pp. 2409- 2419, Nov. 2004.

[14] Z. Jiang, D. S. Seo, S.-D. Yang, D. E. Leaird, A. M. Weiner, R. V. Roussev, . L n ro k, n M. M. F j r, ―Four us r, 2.5 G /s, sp tr lly o O- MA syst m monstr t on us n low pow r nonl n r pro ss n ,‖ in Optical Fiber Communication Conference, 2004Technical Digest Series (Optical Society of America, 2004), paperPDP29.

[15] ―An E t-User Time-Slotted SPECTS O-CDMA Testbed: monstr t on n mul t ons,‖, Journal of Lightwave Technology, VOL. 23, NO. 10, OCTOBER 2005.

[16] J. l , ― MA n qu s n Opt l F r N tworks –P rt I n II‖, IEEE Trans. onCommun., vol.37,no.8, Aug.1989.

[17] J.A. l , A.M. W n r, J.P. H r t , ― o r nt Ultr s ort L t Puls Code- v s on Mult pl A ss ommun t on yst ms‖,IEEE J. of Lightwave Technology, Vol. 8, page 478, March 1990.

Untitled Page