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Journals and Conferences
Dynamically reconfigurable time-division multiplexing (TDM) dense wavelength division multiplexing (DWDM) long-reach passive optical networks (PONs) can support the reduction of nodes and network interfaces by enabling a fully meshed flat optical core. In this paper, we demonstrate the flexibility of the TDM-DWDM PON architecture, which can enable the… (More)
When messages may be intercepted because they contain certain words, terrorists and criminals may replace such words by other words or locutions. If the replacement words have different frequencies from the original words, techniques to detect the substitution are known. In this paper, we consider ways to detect replacements that have similar frequencies to… (More)
A dynamically reconfigurable TDM-DWDM PON for converged multi-services at the physical layer (10G, 100G and wireless fronthaul) has been demonstrated for the first time implementing end-to-end SDN management of the access and core network elements.
We report on the feasibility of using burst-mode electronic dispersion compensation (BM-EDC) combined with a linear burst-mode receiver (LBMRx) to transmit 10 Gbit/s bursts with a loud/soft ratio of up to 15 dB over a reach greater than 100 km. The experimental demonstration used a LBMRx fabricated using a 250 nm SiGe BiCMOS technology and a BM-EDC… (More)
In this paper we make a comparison between the Multiple Access Interference (MAI) incurred in asynchronous Multicarrier Code Division Multiple Access (MC-CDMA) and Direct-Sequence Code Division Multiple Access (DS-CDMA) systems for uplink satellite communications. Using a symbol by symbol recovely approach, we characterize the MAI produced by both systems… (More)
Using burst-mode electronic dispersion compensation and a linear burst-mode receiver, we achieved >100km reach at 15dB loud/soft ratio. Gear shifted least mean squares adaptation limits the number of training bits in the preamble to 250.
This paper presents a method for modeling the bit-error-rate (BER) probability density functions (pdf) of asynchronous Multicarrier Code Division Multiple Access (MC-CDMA) and Direct-Sequence Code Division Multiple Access (DSCDMA) systems. An uplink channel is considered and it is assumed that the only channel distortion introduced by the channel is caused… (More)
Metro-scale TDM-DWDM PONs can enable consolidation of network resources and the convergence of multiple service types on the same infrastructure. Two different SDN enabled metro-scale PON configurations are reported, for densely and sparsely populated areas, supporting 10G PON channels, wireless fronthaul and 100G enterprise services.
This paper proposes an alternative transmission structure to the existing direct-sequence code division multiple access (DSCDMA) technique in order to alleviate the decision variable from a substantial portion of the multiple access interference (MAI) incurred over an asynchronous slow varying Rayleigh fading channel. The proposed technique uses a dual… (More)
The convergence of multiple service demands and different user types on a single physical layer can be enabled by dynamically reconfigurable time-division multiplexing (TDM) dense wavelength division multiplexing (DWDM) long-reach passive optical networks (PONs). In this paper we demonstrate two TDM-DWDM PON designs, the first one for densely populated… (More)