NDLI: A packet-switched multihop lightwave network using subcarrier and wavelength division multiplexing

Content Provider	IEEE Xplore Digital Library
Author	Ramaswami, R. Sivarajan, K.N.
Copyright Year	1972
Abstract	We propose a new architecture for a high-speed packet-switched metropolitan-area lightwave network using a combination of wavelength division multiplexing over fiber and subcarrier multiplexing within each wavelength. Each station transmits on a fixed-wavelength (that may also be used by some other stations) at any one of many available subcarrier frequencies within that wavelength, and receives on some fixed wavelength and fixed subcarrier frequency. Rapid tuning between subcarrier frequencies allows a station to transmit packets to all stations that receive on some subcarrier channel on its transmit wavelength. Packets intended for stations that do not receive on the wavelength of the transmitting station must be routed through intermediate stations. By avoiding rapid tuning between wavelengths, we realise a practical multihop architecture for packet switching with one optical transmitter shared among many stations and one optical receiver per station. This architecture imposes a constraint on the multihop connectivity pattern in the network since all stations using a common transmit wavelength send packets directly to the same set of other stations. The same constraint is applicable to shared-channel multihop networks with a single transmitter and receiver per station. We introduce the notion of "clusterable" directed graphs to represent the connectivity patterns that are possible, and using the properties of these graphs, show that nodes can be added to and removed from the network with minimal disruption to the other nodes. We show that some well-known multihop topologies such as shufflenets and de Bruijn graphs are clusterable. Power budget calculations indicate the feasibility of a 32-wavelength network with five 200 Mb/s FSK subcarrier channels on each wavelength. Our throughput calculations indicate that such a network could support 160 stations with a throughput per station of 44 Mb/s.<>
Starting Page	1198
Ending Page	1211
Page Count	14
File Size	1725265
File Format	PDF
ISSN	00906778
Volume Number	42
Issue Number	234
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spread spectrum communication Frequency shift keying Optical transmitters Optical receivers Throughput Wavelength division multiplexing WDM networks Optical tuning Packet switching Network topology
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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