A NOVEL TDM-OFDM METHOD FOR ENHANCED TRANSMISSION IN PASSIVE OPTICAL NETWORKS
Author’s Name : Snoek | Trummel
Volume 01 Issue 01 Year 2014 ISSN No: 2349-252X Page no: 12-16
Abstract -Presently, digital signal process strategies are wide studied and varied DSP primarily based schemes are appointive for next-generation passive optical network (PON). A hybrid technique is projected which mixes time-division-multiplexing (TDM) design with advanced DSP strategies to attain high spectrum-efficiency colorless transmission. Orthogonal frequency division multiplexing (OFDM) with frequency-domain exploit, is chosen for each upstream and downstream transmissions. A DSP-based evolution theme from customary TDM-PON to TDM-OFDM-PON is usually recommended and through an experiment analyzed by upgrading the optical line terminal (OLT), which might maintain this optical distribution network (ODN). This paper proposes and through an experiment demonstrates the chaos scrambling for a secure time division multiplexing with orthogonal frequency-division- multiplexing passive optical network (TDM-OFDM-PON) supported. The provision map is adopted for the chaos mapping. The chaos scrambling algorithmic program the confidentiality of the physical layer is increased by dynamically portion the scrambling matrices for various OFDM frames in step with the initial condition, that enhance. therefore a secure transmission at physical layer is achieved in TDM-OFDM-PON for encryption. The results indicate the strength against eavesdropping.therefore enhances the standard of service.
Keywords –OFDM-PON, orthogonal frequency division multiplexing (OFDM), passive optical network (PON), TDM-OFDM-PON,Scrambling