NDLI: A packet radio network using inhibit sense multiple access with capture

Content Provider	IEEE Xplore Digital Library
Author	Zdunek, K.J. Ucci, D.R. LoCicero, J.L.
Copyright Year	1989
Description	Author affiliation: Motorola Inc., Schaumburg, IL, USA (Zdunek, K.J.)
Abstract	The throughput and delay of the mobile-to-base channel of a packet radio network employing a nonpersistent inhibit sense multiple access (ISMA) technique are investigated using analysis and discrete event simulation. Land-mobile packet radio networks typically employ frequency modulation, which exhibits a distinct capture effect. The capture phenomenon and the distribution of received packet amplitudes caused by propagation losses and multipath effects allow a packet sent on the mobile-to-base channel to be successfully received in the presence of interfering packets. It is found that, under these conditions, the capacity of ISMA can be substantially higher than that of the same protocol without capture. Furthermore, at high channel loading, the packet delivery delay of ISMA with capture is noticeably smaller than the delay of a channel without capture. The particular distribution of received packet signal strengths is a key factor in determining the throughput characteristic with capture. Reducing the capture ratio by choice of modulation technique and error control is therefore a step that system designers can take to improve the capacity of packet radio systems.
Starting Page	702
Ending Page	706
File Size	458851
Page Count	5
File Format	PDF
DOI	10.1109/GLOCOM.1989.64058
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-11-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Packet radio networks Frequency modulation Base stations Frequency shift keying Access protocols Mobile communication Computer networks Delay Transceivers Radio control
Content Type	Text
Resource Type	Article

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