NDLI: Wireless infrared communications

Content Provider	IEEE Xplore Digital Library
Author	Kahn, J.M. Barry, J.R.
Copyright Year	1963
Abstract	The use of infrared radiation as a medium for high-speed short-range wireless digital communication is discussed. Available infrared links and local-area networks are described. Advantages and drawbacks of the infrared medium are compared to those of radio and microwave media. The physical characteristics of infrared channels using intensity modulation with direct detection (IM/DD) are presented including path losses and multipath responses. Natural and artificial ambient infrared noise sources are characterized. Strategies for designs of transmitter and receivers that maximize link signal-to-noise ratio (SNR) are described. Several modification formats are discussed in detail, including on-off keying (OOK) pulse-position modulation (PPM), and subcarrier modulation. The performance of these techniques in the presence of multipath distortion is quantified. Techniques for multiplexing the transmissions of different users are reviewed. The performance of an experimental 50-Mb/s on-off-keyed diffuse infrared link is described.
Sponsorship	IEEE Publication
Starting Page	265
Ending Page	298
Page Count	34
File Size	2331847
File Format	PDF
ISSN	00189219
Volume Number	85
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-02-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless communication Optical fiber communication Pulse modulation Infrared detectors Signal to noise ratio Digital communication Local area networks Intensity modulation Signal design Radio transmitters
Content Type	Text
Resource Type	Article
Subject	Computer Science Electrical and Electronic Engineering

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