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Search Publications by: David W. Griffith (Fed)

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Displaying 151 - 175 of 175

Resource Planning and Bandwidth Allocation in Hybrid Fiber-Coax Residential Networks

October 1, 2004
Author(s)
David W. Griffith, Kotikalapudi Sriram, L Krivulina, Nada T. Golmie
We have implemented a quantum key distribution (QKD) system with polarization encoding at 850 nm over 1 km of optical fiber. The high-speed management of the bit-stream, generation of random numbers and processing of the sifting algorithm are all handled

Backup Resource Pooling in (M : N) n Fault Recovery Schemes in GMPLS Optical Networks

October 1, 2003
Author(s)
Kotikalapudi Sriram, David W. Griffith, San-Nan K. Lee, Nada T. Golmie
In resilient optical networks, there is a tradeoff between the amount of resources allocated for protection versus the probability that a failed working path cannot be covered, known as protection blocking probability. Often the network topology permits

Hierarachical Restoration Scheme for Multiple Failures in GMPLS Networks

May 12, 2003
Author(s)
Sanghun Lee, C Kim, David W. Griffith
It is expected that GMPLS-based recovery could become a viable option for obtaining faster restoration than layer 3 rerouting. Even though dedicated restoration ensures restorability of connections, exclusive use of dedicated scheme would result in wasting

Hierarchical Restoration Scheme for Multiple Failures in GMPLS Networks

May 1, 2003
Author(s)
San-Nan K. Lee, C Kim, David W. Griffith
It is expected that GMPLS-based recovery could become a viable option for obtaining faster restoration than layer 3 rerouting. Even though dedicated restoration ensures restorability of connections, exclusive use of dedicated scheme would result in wasting

The Effect of Delay Mismatch in MPLS Networks Using 1+1 Protection

May 1, 2003
Author(s)
David W. Griffith, Sanghun Lee, L Krivulina
High-capacity optical-fiber backbone networks protect information flows belonging to their premium customers by routing two copies of the customer's data over disjoint paths. This scheme, known as 1+1 protection, ensures that the customer will experience

An Analytical Approach to Shared Backup Path Provisioning in GMPLS Networks

October 1, 2002
Author(s)
Sanghun Lee, David W. Griffith, N-O Song
As GMPLS and its supporting set of protocols develop into a viable control plane for optical networks, an important function that they will need to support will be the restoration and protection function that has been a major feature of legacy optical

A New Analytical Model of Shared Backup Path Provisioning in GMPLS Networks

July 1, 2002
Author(s)
Sanghun Lee, David W. Griffith, N-O Song
As GMPLS and its supporting set of protocols develop into aviable control plane for optical networks, an important function that they will need to support will be the protection and restoration function that has been a major feature of legacy optical

Dynamic Expansion of M:N Protection Groups in GMPLS Optical Networks

May 1, 2002
Author(s)
David W. Griffith, Sanghun Lee
In order to provide reliable connections across metropolitan and wide-area optical networks, the network operator must provide some degree of redundancy so that traffic can be switched from damaged working paths to backup paths that are disjoint from the

A New Analytical Model of Shared Backup Path Provisioning in GMPLS Networks

March 31, 2002
Author(s)
San-Nan K. Lee, David W. Griffith, N-O Song
As GMPLS and its supporting set of protocols develop into a viable control plane for optical networks, an important function that they will need to support will be the protection and restoration function that has been a major feature of legacy optical
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