Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

BER-Based Call Admission in Wavelength-Routed Optical Networks

Not Accessible

Your library or personal account may give you access


In a wavelength-routed optical network, a transmitted signal remains in the optical domain over the entire route (lightpath) assigned to it between its source and destination nodes. The optical signal may have to traverse a number of crossconnect switches (XCSs), fiber segments, and optical amplifiers, e.g., erbium-doped fiber amplifiers (EDFAs). Thus, while propagating through the network, the signal may degrade in quality as it encounters crosstalk at the XCSs and also picks up amplified spontaneous emission (ASE) noise at the EDFAs. Since these impairments continue to degrade the signal quality as it progresses towards its destination, the receiver bit error rate (BER) at the destination node might become unacceptably high. Previous work on the lightpath routing and wavelength assignment (RWA) problems assumed an ideal physical layer and ignored these transmission impairments. The mam contribution of our work is to incorporate the role the physical layer in setting up lightpaths by employing appropriate models of multi-wavelength optical devices (XCSs and EDFAs) such that the BER of a candidate lightpath can be computed to determine if this lightpath should be used for the call. Features from existing RWA algorithms are integrated with our on-line BER calculation mechanism. Our simulation studies indicate that employing BER-based call admission algorithms has a significant impact on the performance of realistic networks.

© 1998 Optical Society of America

PDF Article
More Like This
BER-based call admission In wavelength-routed optical networks

Debasish Datta, Byrav Ramamurthy, Helena Feng, Jonathan P. Heritage, and Biswanath Mukherjee
TuP4 Optical Fiber Communication Conference (OFC) 1998

Transparent vs. opaque vs. translucent wavelength-routed optical networks

Byrav Ramamurthy, Helena Feng, Debasish Datta, Jonathan P. Heritage, and Biswanath Mukherjee
TuF2 Optical Fiber Communication Conference (OFC) 1999

On the Number of Wavelengths in Arbitrarily-Connected Wavelength-Routed Optical Networks

Stefano Baroni, Polina Bayvel, and Richard J. Gibbens
MN2 Optical Networks and Their Applications (ONA) 1998


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access Optica Member Subscription

Select as filters

Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved