The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform

Leonid G. Kazovsky - One of the best experts on this subject based on the ideXlab platform.

  • wdm Metropolitan Area Network based on csma ca packet switching
    IEEE Photonics Technology Letters, 1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, K Shrikhande, Leonid G. Kazovsky
    Abstract:

    The bursty nature of traffic in Metropolitan Area Networks results in underutilized and inefficient SONET Networks. The hybrid optoelectronic ring Network (HORNET) is a Network being developed at the Optical Communications Research Laboratory at Stanford University to address the problems of SONET transport in Metropolitan Area Networks (MAN's). HORNET performs packet switching using a fast-tunable wavelength transmitter, which hops to different wavelengths on a packet-by-packet basis. In this letter, we present simulation results which quantify the benefits of a wavelength tunable transmitter in a packet switched wavelength-division-multiplexed MAN. We show that a tunable transmitter is able to take advantage of imbalances in wavelength utilization, and provides a 45% improvement in packet latency characteristics. We also show that in order to maintain these benefits the tuning time of the transmitter cannot exceed 10% of the packet transmit time.

  • WDM Metropolitan Area Network based on CSMA/CA packet switching
    Photonics Technology Letters IEEE, 1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, K Shrikhande, T One, Leonid G. Kazovsky
    Abstract:

    The bursty nature of traffic in Metropolitan Area Networks results in underutilized and inefficient SONET Networks. The hybrid optoelectronic ring Network (HORNET) is a Network being developed at the Optical Communications Research Laboratory at Stanford University to address the problems of SONET transport in Metropolitan Area Networks (MAN's). HORNET performs packet switching using a fast-tunable wavelength transmitter, which hops to different wavelengths on a packet-by-packet basis. In this letter, we present simulation results which quantify the benefits of a wavelength tunable transmitter in a packet switched wavelength-division-multiplexed MAN. We show that a tunable transmitter is able to take advantage of imbalances in wavelength utilization, and provides a 45% improvement in packet latency characteristics. We also show that in order to maintain these benefits the tuning time of the transmitter cannot exceed 10% of the packet transmit time

  • hornet a packet switched wdm Metropolitan Area Network
    1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, K Shrikhande, Leonid G. Kazovsky
    Abstract:

    HORNET is a metro Network designed to better face the challenges offered by next generation Metropolitan Area Networks. HORNET uses a packet-over-WDM transport on a bi-directional ring Network. Fast-tunable packet transmitters and wavelength routing enable it to scale cost-effectively to ultra-high capacities. A control-channel-based MAC protocol enables the nodes to share the bandwidth of the Network while preventing collisions. The MAC protocol is designed to transport variable-sized IP packets and guaranteed bit-rate circuits while maintaining fairness in the Network. Survivability protocols protect circuit and best effort traffic against a fiber cut or node failure. A burst mode receiver, in conjunction with the tunable transmitter and constant gain optical amplifiers make up the essential sub-systems inside a node. This article summarizes the accomplishments of the HORNET project, including the design, analysis, and demonstration of the architecture, protocols, sub-systems and testbed. As this work shows, the HORNET architecture is an excellent candidate for next-generation high-capacity metro Networks.

  • learn stanford sprint reconfigurable wdm Metropolitan Area Network
    Lasers and Electro-Optics Society Meeting, 1998
    Co-Authors: S M Gemelos, D Wonglumsom, Leonid G. Kazovsky
    Abstract:

    Channel crosstalk generates signal beat terms that reduce the digital SNR at the receiver. The digital SNR falls off with the size of the OADM and the number of add/drop channels, suggesting that the number of channels in a Network is limited by crosstalk in the AWG router. With an optical filter added at the output of the AWG router the digital SNR is independent of the total number of channels in the Network and the number of add/drop channels.

  • LEARN: Stanford/sprint reconfigurable WDM Metropolitan Area Network
    Conference Proceedings. LEOS'98. 11th Annual Meeting. IEEE Lasers and Electro-Optics Society 1998 Annual Meeting (Cat. No.98CH36243), 1998
    Co-Authors: S M Gemelos, D Wonglumsom, Leonid G. Kazovsky
    Abstract:

    Channel crosstalk generates signal beat terms that reduce the digital SNR at the receiver. The digital SNR falls off with the size of the OADM and the number of add/drop channels, suggesting that the number of channels in a Network is limited by crosstalk in the AWG router. With an optical filter added at the output of the AWG router the digital SNR is independent of the total number of channels in the Network and the number of add/drop channels.

S M Gemelos - One of the best experts on this subject based on the ideXlab platform.

  • wdm Metropolitan Area Network based on csma ca packet switching
    IEEE Photonics Technology Letters, 1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, K Shrikhande, Leonid G. Kazovsky
    Abstract:

    The bursty nature of traffic in Metropolitan Area Networks results in underutilized and inefficient SONET Networks. The hybrid optoelectronic ring Network (HORNET) is a Network being developed at the Optical Communications Research Laboratory at Stanford University to address the problems of SONET transport in Metropolitan Area Networks (MAN's). HORNET performs packet switching using a fast-tunable wavelength transmitter, which hops to different wavelengths on a packet-by-packet basis. In this letter, we present simulation results which quantify the benefits of a wavelength tunable transmitter in a packet switched wavelength-division-multiplexed MAN. We show that a tunable transmitter is able to take advantage of imbalances in wavelength utilization, and provides a 45% improvement in packet latency characteristics. We also show that in order to maintain these benefits the tuning time of the transmitter cannot exceed 10% of the packet transmit time.

  • WDM Metropolitan Area Network based on CSMA/CA packet switching
    Photonics Technology Letters IEEE, 1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, K Shrikhande, T One, Leonid G. Kazovsky
    Abstract:

    The bursty nature of traffic in Metropolitan Area Networks results in underutilized and inefficient SONET Networks. The hybrid optoelectronic ring Network (HORNET) is a Network being developed at the Optical Communications Research Laboratory at Stanford University to address the problems of SONET transport in Metropolitan Area Networks (MAN's). HORNET performs packet switching using a fast-tunable wavelength transmitter, which hops to different wavelengths on a packet-by-packet basis. In this letter, we present simulation results which quantify the benefits of a wavelength tunable transmitter in a packet switched wavelength-division-multiplexed MAN. We show that a tunable transmitter is able to take advantage of imbalances in wavelength utilization, and provides a 45% improvement in packet latency characteristics. We also show that in order to maintain these benefits the tuning time of the transmitter cannot exceed 10% of the packet transmit time

  • hornet a packet switched wdm Metropolitan Area Network
    1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, K Shrikhande, Leonid G. Kazovsky
    Abstract:

    HORNET is a metro Network designed to better face the challenges offered by next generation Metropolitan Area Networks. HORNET uses a packet-over-WDM transport on a bi-directional ring Network. Fast-tunable packet transmitters and wavelength routing enable it to scale cost-effectively to ultra-high capacities. A control-channel-based MAC protocol enables the nodes to share the bandwidth of the Network while preventing collisions. The MAC protocol is designed to transport variable-sized IP packets and guaranteed bit-rate circuits while maintaining fairness in the Network. Survivability protocols protect circuit and best effort traffic against a fiber cut or node failure. A burst mode receiver, in conjunction with the tunable transmitter and constant gain optical amplifiers make up the essential sub-systems inside a node. This article summarizes the accomplishments of the HORNET project, including the design, analysis, and demonstration of the architecture, protocols, sub-systems and testbed. As this work shows, the HORNET architecture is an excellent candidate for next-generation high-capacity metro Networks.

  • learn stanford sprint reconfigurable wdm Metropolitan Area Network
    Lasers and Electro-Optics Society Meeting, 1998
    Co-Authors: S M Gemelos, D Wonglumsom, Leonid G. Kazovsky
    Abstract:

    Channel crosstalk generates signal beat terms that reduce the digital SNR at the receiver. The digital SNR falls off with the size of the OADM and the number of add/drop channels, suggesting that the number of channels in a Network is limited by crosstalk in the AWG router. With an optical filter added at the output of the AWG router the digital SNR is independent of the total number of channels in the Network and the number of add/drop channels.

  • LEARN: Stanford/sprint reconfigurable WDM Metropolitan Area Network
    Conference Proceedings. LEOS'98. 11th Annual Meeting. IEEE Lasers and Electro-Optics Society 1998 Annual Meeting (Cat. No.98CH36243), 1998
    Co-Authors: S M Gemelos, D Wonglumsom, Leonid G. Kazovsky
    Abstract:

    Channel crosstalk generates signal beat terms that reduce the digital SNR at the receiver. The digital SNR falls off with the size of the OADM and the number of add/drop channels, suggesting that the number of channels in a Network is limited by crosstalk in the AWG router. With an optical filter added at the output of the AWG router the digital SNR is independent of the total number of channels in the Network and the number of add/drop channels.

R. Ramaswami - One of the best experts on this subject based on the ideXlab platform.

  • All-optical packet-switched Metropolitan-Area Network proposal
    Journal of Lightwave Technology, 1993
    Co-Authors: P.e. Green, L.a. Coldren, K.m. Johnson, J.g. Lewis, C.m. Miller, J.f. Morrison, R. Olshansky, R. Ramaswami, E.h. Smithand
    Abstract:

    A proposal for developing a precompetitive, commercially viable all-optical Network architecture using dense optical wavelength division is described. The objective was to demonstrate a packet-switched high-capacity all-optical LAN/MAN Network based on wavelength-division multiplexing (WDM) and capable of supporting several hundred to a thousand nodes, each requiring gigabit-per-second throughputs. The discussion covers the rationale and objectives of the program; tunable components, optical amplifiers, Network protocol, and application development; Network interconnection studies; and testbed construction.

  • A prototype circuit-switched multi-wavelength optical Metropolitan-Area Network
    Journal of Lightwave Technology, 1993
    Co-Authors: F.j. Janniello, R. Ramaswami, D.g. Steinberg
    Abstract:

    A description is given of Rainbow, a prototype optical Network based on wavelength-division multiaccess (WDMA). Rainbow supports full-duplex circuit-switched interconnection of up to 32 workstations over a diameter of 25 km, at sustained bit rates of up to 300 Mb/s per connection, allowing a total Network capacity of 9.6 Gb/s. Different connections are transparent to each other and may use different protocols and bit rates.

Ruei-i Chang - One of the best experts on this subject based on the ideXlab platform.

  • Improved Wireless Token Ring Protocol (IWTRP) for Wireless Metropolitan Area Networks
    2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring, 2007
    Co-Authors: Ray-guang Cheng, Ruei-i Chang
    Abstract:

    A multi-hop wireless Metropolitan Area Network (WMAN) is a Metropolitan Area Network that adopts the wireless multi-hop technique to provide high-speed data link between adjacent nodes for Metropolitan Area. This work presents an improved wireless token ring (IWTRP) protocol for W-MAN. IWTRP adopts the concept of spatial reuse to enhance the throughput of the W-MAN via using multiple tokens. It provides mechanisms to enable multi-token circulation within a ring and to prevent from the possible packet collisions. An analytical model is further proposed to derive the per-node saturation throughput of the W-MAN. Simulation results demonstrate the accuracy of the analysis and the superiority of IWTRP

  • VTC Spring - Improved Wireless Token Ring Protocol (IWTRP) for Wireless Metropolitan Area Networks
    2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring, 2007
    Co-Authors: Ray-guang Cheng, Ruei-i Chang
    Abstract:

    A multi-hop wireless Metropolitan Area Network (WMAN) is a Metropolitan Area Network that adopts the wireless multi-hop technique to provide high-speed data link between adjacent nodes for Metropolitan Area. This work presents an improved wireless token ring (IWTRP) protocol for W-MAN. IWTRP adopts the concept of spatial reuse to enhance the throughput of the W-MAN via using multiple tokens. It provides mechanisms to enable multi-token circulation within a ring and to prevent from the possible packet collisions. An analytical model is further proposed to derive the per-node saturation throughput of the W-MAN. Simulation results demonstrate the accuracy of the analysis and the superiority of IWTRP

D Wonglumsom - One of the best experts on this subject based on the ideXlab platform.

  • wdm Metropolitan Area Network based on csma ca packet switching
    IEEE Photonics Technology Letters, 1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, K Shrikhande, Leonid G. Kazovsky
    Abstract:

    The bursty nature of traffic in Metropolitan Area Networks results in underutilized and inefficient SONET Networks. The hybrid optoelectronic ring Network (HORNET) is a Network being developed at the Optical Communications Research Laboratory at Stanford University to address the problems of SONET transport in Metropolitan Area Networks (MAN's). HORNET performs packet switching using a fast-tunable wavelength transmitter, which hops to different wavelengths on a packet-by-packet basis. In this letter, we present simulation results which quantify the benefits of a wavelength tunable transmitter in a packet switched wavelength-division-multiplexed MAN. We show that a tunable transmitter is able to take advantage of imbalances in wavelength utilization, and provides a 45% improvement in packet latency characteristics. We also show that in order to maintain these benefits the tuning time of the transmitter cannot exceed 10% of the packet transmit time.

  • WDM Metropolitan Area Network based on CSMA/CA packet switching
    Photonics Technology Letters IEEE, 1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, K Shrikhande, T One, Leonid G. Kazovsky
    Abstract:

    The bursty nature of traffic in Metropolitan Area Networks results in underutilized and inefficient SONET Networks. The hybrid optoelectronic ring Network (HORNET) is a Network being developed at the Optical Communications Research Laboratory at Stanford University to address the problems of SONET transport in Metropolitan Area Networks (MAN's). HORNET performs packet switching using a fast-tunable wavelength transmitter, which hops to different wavelengths on a packet-by-packet basis. In this letter, we present simulation results which quantify the benefits of a wavelength tunable transmitter in a packet switched wavelength-division-multiplexed MAN. We show that a tunable transmitter is able to take advantage of imbalances in wavelength utilization, and provides a 45% improvement in packet latency characteristics. We also show that in order to maintain these benefits the tuning time of the transmitter cannot exceed 10% of the packet transmit time

  • hornet a packet switched wdm Metropolitan Area Network
    1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, K Shrikhande, Leonid G. Kazovsky
    Abstract:

    HORNET is a metro Network designed to better face the challenges offered by next generation Metropolitan Area Networks. HORNET uses a packet-over-WDM transport on a bi-directional ring Network. Fast-tunable packet transmitters and wavelength routing enable it to scale cost-effectively to ultra-high capacities. A control-channel-based MAC protocol enables the nodes to share the bandwidth of the Network while preventing collisions. The MAC protocol is designed to transport variable-sized IP packets and guaranteed bit-rate circuits while maintaining fairness in the Network. Survivability protocols protect circuit and best effort traffic against a fiber cut or node failure. A burst mode receiver, in conjunction with the tunable transmitter and constant gain optical amplifiers make up the essential sub-systems inside a node. This article summarizes the accomplishments of the HORNET project, including the design, analysis, and demonstration of the architecture, protocols, sub-systems and testbed. As this work shows, the HORNET architecture is an excellent candidate for next-generation high-capacity metro Networks.

  • learn stanford sprint reconfigurable wdm Metropolitan Area Network
    Lasers and Electro-Optics Society Meeting, 1998
    Co-Authors: S M Gemelos, D Wonglumsom, Leonid G. Kazovsky
    Abstract:

    Channel crosstalk generates signal beat terms that reduce the digital SNR at the receiver. The digital SNR falls off with the size of the OADM and the number of add/drop channels, suggesting that the number of channels in a Network is limited by crosstalk in the AWG router. With an optical filter added at the output of the AWG router the digital SNR is independent of the total number of channels in the Network and the number of add/drop channels.

  • LEARN: Stanford/sprint reconfigurable WDM Metropolitan Area Network
    Conference Proceedings. LEOS'98. 11th Annual Meeting. IEEE Lasers and Electro-Optics Society 1998 Annual Meeting (Cat. No.98CH36243), 1998
    Co-Authors: S M Gemelos, D Wonglumsom, Leonid G. Kazovsky
    Abstract:

    Channel crosstalk generates signal beat terms that reduce the digital SNR at the receiver. The digital SNR falls off with the size of the OADM and the number of add/drop channels, suggesting that the number of channels in a Network is limited by crosstalk in the AWG router. With an optical filter added at the output of the AWG router the digital SNR is independent of the total number of channels in the Network and the number of add/drop channels.