Performance Analysis of a Full - Duplex WDM-EPON based System with Fiber to Wireless Optical Network
Wireless technique is speedily becoming more essential during last four decade. Optical wireless channel is a type of communication in which unguided visible, IR, UV light wave is used to carry message signal. Based on transmission range optical wireless channel is used to send message at ultra-short, short, medium, high and ultra-high range. In this paper message signal is send through IR light wave at long range OWC from optical line terminal (OLT), having frequency lying in the range of 750nm-1600nm.On the other hand single mode optical fiber is used at receiver end to carry signal to the optical network unit (ONU).In this paper it is demonstrated that WDM-EPON technology has been successfully deployed in fiber to home which makes system more advanced, cost effective and having very high bandwidth and very high data rate. The proposed bidirectional simulation is made on Optisystem software and analyzed considering Qfactor, BER and power received.
Integration of Optically Generated Impulse Radio UWB Signals Into Baseband WDM-PON
We propose a compact integration system to simultaneously provide wireline and wireless [baseband and ultra-wideband (UWB)] services to end-users in a wavelength-division-multiplexed-passive optical network (WDM-PON). A 1-Gb/s UWB signal is optically generated and shares the same wavelength with the baseband signal. Error-free performance was achieved after 23-km single-mode-fiber (SMF) transmission for both signals and additional 0.4-m wireless transmission for the UWB signal. The low complexity and high spectrum efficiency of this system makes it attractive for deployment of in wireline/wireless converged gigabit optical access networks.
Generic Framing Procedure (GFP)
The Generic Framing Procedure (GFP) is a new protocol recently standardized under ITU-T G.7041/Y.1303 [1] and ANSI T1.105.02 [2] and designed to support variable- and fixed-length packet transport modes over a general-purpose bit or byte synchronous high-speed communications channel. GFP extends the HEC-based packet delineation mechanism used by other broadband applications such as ATM [3] to variable-length data transport applications. GFP exploits the ability of modern point-to-point transmission links to deliver the incoming information stream in a sequential and orderly fashion to greatly simplify data link layer synchronization and frame boundary delineation operations. Unlike packet delineation mechanisms based on the HDLC framing procedure [4], [5], GFP requires no special line encoding for the framed protocol data units (PDU), which substantially reduces processing logic requirements for the data link mapper/demappers. Unlike ATM, GFP delegates high-touch QoS management functions to the client layers, which further reduces operational overhead. The lower implementation complexity makes GFP particularly suitable for high-speed transmission links such as SONET/SDH [6], [7] point-to-point links, wavelength channels in an optical transport network [8], or even dark fiber applications [9]. For high data rate environments, GFP is a very attractive alternative to solutions such as ATM, Frame Relay [10], PPP/HDLC [11], PPP-over-SONET (POS) [12], or X.85/X.86 [13], [14].