NDLI: Reduction of optical beat interference in optical frequency-hopping CDMA networks using coherence multiplexing

Content Provider	IEEE Xplore Digital Library
Author	Kamakura, K. Sasase, I.
Copyright Year	2001
Description	Author affiliation: Dept. of Inf. & Comput. Sci., Keio Univ., Yokohama, Japan (Kamakura, K.)
Abstract	In order to reduce optical beat interference (OBI) in an optical frequency-hopping code division multiple access (FH-CDMA) network, we propose the application of coherence multiplexing (CM). Since the CM technique achieves multiplexing by using time delays exceeding the coherence time of the light sources, the crosstalk between CM channels depends on the space of the delay difference between CM channels. We analyze the crosstalk to signal ratio as a function of the space, and find a channel space that is enough to neglect the crosstalk from other CM channels. Using this channel space, we obtain the number of CM channels accommodated within one chip duration. Since the conventional FH-CDMA supports traffic by the code channels only, its capacity is limited by the OBI as the traffic increases. In addition to the code channel, the proposed network supports traffic by the CM channels. Since the addition of CM channels decreases the number of active code channels for uniform traffic, the OBI is reduced. Numerical results show that the proposed network attains a larger capacity than the conventional FH-CDMA.
Starting Page	695
Ending Page	700
File Size	600996
Page Count	6
File Format	PDF
ISBN	0780370971
DOI	10.1109/ICC.2001.937329
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-06-11
Publisher Place	Finland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interference Optical crosstalk Telecommunication traffic Optical fiber networks Coherence Delay effects Optical frequency conversion Multiaccess communication Code division multiplexing Light sources
Content Type	Text
Resource Type	Article

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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
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