Campus Units
Electrical and Computer Engineering
Document Type
Article
Publication Version
Accepted Manuscript
Publication Date
1-2002
Journal or Book Title
IEEE Journal on Selected Areas in Communications
Volume
20
Issue
1
First Page
202
Last Page
215
DOI
10.1109/49.974674
Abstract
The advances in photonic switching have paved the way for realizing all-optical time switched networks. The current technology of wavelength division multiplexing (WDM) offers bandwidth granularity that matches peak electronic transmission speed by dividing the fiber bandwidth into multiple wavelengths. However, the bandwidth of a single wavelength is too large for certain traffic. Time division multiplexing (TDM) allows multiple traffic streams to share the bandwidth of a wavelength efficiently. While introducing wavelength converters and time slot interchangers to improve network blocking performance, it is often of interest to know the incremental benefits offered by every additional stage of switching. As all-optical networks in the future are expected to employ heterogeneous switching architectures, it is necessary to have a generalized network model that allows the study of such networks under a unified framework. A network model, called the trunk switched network (TSN), is proposed to facilitate the modeling and analysis of such networks. An analytical model for evaluating the blocking performance of a class of TSNs is also developed. With the proposed framework, it is shown that a significant performance improvement can be obtained with a time-space switch with no wavelength conversion in multiwavelength TDM switched networks. The framework is also extended to analyze the blocking performance of multicast tree establishment in optical networks. To the best of our knowledge, this is the first work that provides an analytical model for evaluating the blocking performance for tree establishment in an optical network. The analytical model allows a comparison between the performance of various multicast tree construction algorithms and the effects of different switch architectures.
Rights
© 2002 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Copyright Owner
IEEE
Copyright Date
2002
Language
en
File Format
application/pdf
Recommended Citation
Srinivasan, Renuka and Somani, Arun K., "A generalized framework for analyzing time-space switched optical networks" (2002). Electrical and Computer Engineering Publications. 289.
https://lib.dr.iastate.edu/ece_pubs/289
Comments
This is a manuscript of an article published as Srinivasan, Renuka, and Arun K. Somani. "A generalized framework for analyzing time-space switched optical networks." IEEE Journal on Selected Areas in Communications 20, no. 1 (2002): 202-215. DOI: 10.1109/49.974674. Posted with permission.