Browsing by Author "Optical Networks"

Now showing items 41-60 of 82

    • MAC protocol requirements for OFDMA-PONs 

      Lim, Wansu; Milosavljevic, Milos; Gliwan, Ali; Kourtessis, Pandelis; Senior, J.M. (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      This paper provides specifications of the parameters defining the design of medium access control (MAC) protocols for orthogonal frequency division multiple access (OFDMA) passive optical networks (PONs). A dynamic bandwidth ...

    • Minimization of amplified spontaneous emission noise in upstream SuperPON 512 ONU, 10 Gbit/s 

      Jabar, S.A.; Jamro, M.Y.; Senior, J.M. (Institute of Electrical and Electronics Engineers (IEEE), 2005)
      We demonstrated the effect of presenting optical band pass filter for point to multipoint architecture such SuperPON. The position of optical filter and the range of optical filter bandwidth to minimise amplified spontaneous ...

    • Modeling Chirp and Phase Inversion in Wavelength Converters based on Symmetrical MZI-SOAs for use in All-Optical Networks 

      Jamro, M.Y.; Senior, J.M.; Leeson, M.S.; Murtaza, G. (2003-05-01)
      All-optical wavelength conversion based on multi-section semiconductor optical amplifiers (SOAs) in a symmetrical Mach-Zehnder interferometer (SMZI) is modeled for use in optical networks. It incorporates an enhanced SOA ...

    • Modeling of LTE back-hauling through OFDMA-PONs 

      Lim, Wansu; Kourtessis, Pandelis; Kanonakis, Konstantinos; Milosavljevic, Milos; Tomkos, Ioannis; Senior, J.M. (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      This paper evaluates a novel mapping and scheduling scheme which allows efficient control over the quality-of-service (QoS) experienced by long term evolution (LTE) users when backhauled over an orthogonal frequency division ...

    • Modelling the response of different WDM PON architectures to varying traffic load 

      Senior, J.M.; Handley, M.R.; Leeson, M.S.; Phillips, A.J.; Ball, P.; Wright, I. (1999)
      The introduction of wavelength division multiplexing into the access network is a potentially attractive alternative upgrade strategy to increasing the bit rate of passive optical networks (PON). A number of different ...

    • Modified ShuffleNet for Multihop All-Optical WDM Networks Employing Wavelength Reuse 

      Jamro, M.Y.; Murtaza, G.; Leeson, M.S.; Senior, J.M. (2000)
      A modified multihop ShuffleNet configuration for WDM all-optical networks is described which is rearrangeable and allows wavelength reuse at each node as it expands. This configuration does not require any rearrangement ...

    • Multi-PON access network using a coarse AWG for smooth migration from TDM to WDM PON 

      Shachaf, Y.; Chang, C-H.; Kourtessis, P.; Senior, J.M. (2007)
      An interoperable access network architecture based on a coarse array waveguide grating (AWG) is described, displaying dynamic wavelength assignment to manage the network load across multiple PONs. The multi-PON architecture ...

    • Multi-PON access/metro network using a coarse-WDM AWG router 

      Shachaf, Y.; Kourtessis, P.; Senior, J.M. (ACM Press, 2006)
      A novel access/metro network architecture based on a coarse wavelength division multiplexing array waveguide grating router, supporting multiple passive optical networks (PONs) in the downstream and switching up to 32 ...

    • A multi-wavelength access network featuring WiMAX transmission over GPON links 

      Milosavljevic, M.; Thakur, M.P.; Kourtessis, P.; Mitchell, J.E.; Senior, J.M. (Institute of Electrical and Electronics Engineers (IEEE), 2010)
      An IEEE802.16e compliant PON architecture with wavelength band overlay has been demonstrated. Transparent transmission of mobile-WiMAX RF channels over multi-wavelength GPON links, based on FDM, has demonstrated at remote ...

    • Multi-wavelength WiMAX-PONs with overlapping cells 

      Milosavljevic, M.; Kourtessis, P.; Senior, J.M. (2011)
      An access network architecture integrating standard wireless signal formats over multi-wavelength splitter-PON based on radio over fiber (RoF) technology is demonstrated. Frequency division multiplexing (FDM) is applied ...

    • Multi-wavelength wireless-PON 

      Milosavljevic, M.; Gliwan, A.; Kourtessis, P.; Senior, J.M. (Institute of Electrical and Electronics Engineers (IEEE), 2010)
      An innovative architectural platform demonstrating transparent transmission of frequency division multiplexed (FDM) WiMAX channels over multi-wavelength splitter-PONs enriched by overlapping cell functionalities has been ...

    • Multicast polling for 10G-EPON 

      Lim, Wansu; Yang, Yeon-Mo; Milosavljevic, Milos (2012-04)
      A multicast polling scheme is proposed for 10G Ethernet passive optical networks (10G-EPONs). In the multicast polling scheme, the GATE message is broadcast to all ONUs with a new op-code of 0007. Comparing the proposed ...

    • Multiple - PON access network architecture 

      Shachaf, Y.; Kourtessis, P.; Senior, J.M. (Institution of Engineering and Technology (IET), 2006)
      A novel access network architecture based on a coarse wavelength division multiplexing array waveguide grating router for switching up to 32 optical network units per passive optical network over a single coarse wavelength ...

    • Near-Field Terahertz Communications: Model-Based and Model-Free Channel Estimation 

      Elbir, Ahmet M.; Shi, Wei; Papazafeiropoulos, Anastasios K.; Kourtessis, Pandelis; Chatzinotas, Symeon (2023-04-11)
      Terahertz (THz) band is expected to be one of the key enabling technologies of the sixth generation (6G) wireless networks because of its abundant available bandwidth and very narrow beamwidth. Due to high frequency ...

    • A New efficient dynamic MAC protocol for the delivery of multiple services over GPON 

      Jiang, J.; Senior, J.M. (2009)
      The Gigabit-capable passive optical network (GPON) has become an attractive and promising solution for the broadband access network. It is apparent that an efficient medium access control (MAC) protocol is crucial not only ...

    • New wavelength assignment schemes for wavelength division multiplexed passive optical networks 

      Senior, J.M.; Handley, M.R.; Leeson, M.S.; Phillips, A.J.; Ainscough, J. (2000)
      The passive optical network has been shown to be a cost effective method of introducing fibre to the access network. However, the expected increase in demand for broadband services will inevitably mean that upgrades in ...

    • Next generation PONs with wireless backhauling 

      Milosavljevic, M.; Kourtessis, P.; Lim, W.; Senior, J.M. (Institute of Electrical and Electronics Engineers (IEEE), 2011)
      This paper is tackling the issue that stem from the coexistence of diverse technologies, such as emerging OFDMA-PON and WiMAX/LTE, within the same infrastructure. It outlines the key requirements that need to be fulfilled ...

    • Nuts and Bolts of a Realistic Stochastic Geometric Analysis of mmWave HetNets: Hardware Impairments and Channel Aging 

      Papazafeiropoulos, Anastasios; Ratnarajah, Tharmalingam; Kourtessis, Pandelis; Chatzinotas, Symeon (2019-03-28)
      Motivated by heterogeneous network (HetNet) design in improving coverage and by millimeter-wave (mmWave) transmission offering an abundance of extra spectrum, we present a general analytical framework shedding light on the ...

    • An OFDMA-Based Optical Access Network Architecture Exhibiting Ultra-High Capacity and Wireline-Wireless Convergence 

      Kanonakis, Konstantinos; Tomkos, Ioannis; Krimmel, H.; Schaich, F.; Lange, C.; Weis, E.; Leuthold, J.; Winter, M.; Romero, S.; Kourtessis, Pandelis; Milosavljevic, Milos; Cano, I.N.; Prat, O. (2012-08)
      This paper presents a novel optical access network architecture based on Orthogonal Frequency Division Multiple Access (OFDMA) technology and applied on a Passive Optical Network (PON) topology. In compliance with Next ...

    • Optical amplifier number and placement in the SuperPON architecture 

      Sakena, A.J.; Jamro, M.Y.; Senior, J.M. (2004-01-01)
      Three alternative optically amplified long reach, wide splitting ratio PON (SuperPON) amplifier placement strategies (i.e architectural configurations) are modelled using the Virtual Photonic Integration (VPI) simulation ...