Journal Title : International Journal of Modern Trends in Engineering and Science

Author’s Name : R.Dharsini

Volume 01 Issue o5  Year 2014  

ISSN no:  2348-3121 

Page no: 79-85

Abstract—Currently, digital signal processing methods have been widely studied and various DSP based schemes have been nominated for next-generation passive optical network (PON). A hybrid technique is proposed which combines time-division-multiplexing (TDM) architecture with advanced DSP methods to achieve high spectrum-efficiency colorless transmission. Orthogonal frequency division multiplexing (OFDM) with frequency-domain equalization, is chosen for both upstream and downstream transmissions. A DSP-based evolution scheme from customary TDM-PON to TDM-OFDM-PON is suggested and experimentally analyzed by upgrading the optical line terminal (OLT), which can maintain the current optical distribution network (ODN). This paper proposes and experimentally demonstrates the chaos scrambling for a secure time division multiplexing with orthogonal frequency-division-multiplexing passive optical network (TDM-OFDM-PON) based on. The Logistic map is adopted for the chaos mapping. The chaos scrambling algorithm the confidentiality of the physical layer is enhanced by  dynamically allocate the scrambling matrices for different OFDM frames according to the initial condition, which enhance. Hence  a secure transmission at physical layer is achieved in TDM-OFDM-PON for data encryption. The results indicate the robustness against eavesdropping. Hence enhances the quality of service.

Keywords— OFDM-PON, orthogonal frequency division multiplexing (OFDM), passive optical network (PON), TDM-OFDM-PON,Scrambling.


[1] I. Koffman, V. Roman, “Broadband wireless access solutions based on OFDM access in IEEE 802.16,” IEEE Commun. Mag., Vol. 40, No. 4, Apr. (2002).
[2] M. Morelli, “Timing and frequency synchronization for the uplink of an OFDMA system,” IEEE Trans. Commun., Vol. 52, No. 2, Feb. (2004).
[3] P. E. Green, Jr., “Fiber to the home: The next big broadband thing,” IEEE Commun. Mag., Vol. 42, No. 9, pp. 100–106, Sep. (2004).
[4] C. E. Shannon, “Communication theory of secrecy systems,” Bell Syst. Tech. J., Vol. 28,
[5] C. Lee, W. V. Sorin, and B. Y. Kim, “Fiber to the home using a PON infrastructure,” J. Lightw. Technol., Vol. 24, pp. 4568–4583, 2006.
[6] H. Nakamura, H. Suzuki, J. Kani and K. Iwatsuki Reliable wide-area wavelength division multiplexing passive optical network accommodating gigabit ethernet and 10-Gb ethernet services J. Lightw. Technol., Vol. 24, No. 5, pp. 2045-2051, 2006.
[7] A. Lowery and J. Armstrong “Orthogonal frequency division multiplexing for dispersion compensation of long-haul optical systems” OSA Opt. Exp., Vol. 14, No. 6, pp. 2079-2084, (2006).
[8] W. Shieh and C. Athaudage “Coherent optical orthogonal frequency division multiplexing”Electron. Lett., Vol. 42, No. 10, pp. 587-589, (2006).
[9] L. G. Kazovsky,W.-T.Shaw, D. Gutierrez, N. Cheng, and S.-W.Wong, “Next-generation optical access networks,” J. Lightw. Technol., Vol. 25, pp. 3428–3442, (2007).
[10] D. Qian, J. Hu, J. Yu, P. N. Ji, L. Xu, T. Wang, M. Cvijetic, and T. Kusano, “Experimental demonstration of a novel OFDMA-based 10 Gb/s PON architecture,” presented at the Proc. ECOC, (2007), paper Mo 5.4.1, unpublished.
[11] N. Cvijetic, D. Qian, J. Hu, and T. Wang, “Orthogonal frequency division multiple access PON (OFDMA-PON) for colorless upstream transmission beyond 10 Gb/s”.

Full Pdf Paper-Click Here


Scroll Up