NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
ARQ schemes for data transmission in mobile radio systemsThe problem of providing data communications over a land mobile radio channel is considered, taking into account error detection combined with retransmission on request as a means of obtaining reliability in digital data transmission. The considered systems are referred to as automatic RQ (repeat-request) or ARQ. It is pointed out that the distinguishing features of a land mobile radio (LMR) system, as far as the ARQ protocol is concerned, are a frequency or pair of frequencies shared by a large population of half-duplex users which cannot transmit and receive simultaneously. A description is presented of those variations of ARQ which are adaptable to an LMR system. A new channel model for a fading LMR channel is developed, and several ARQ protocols and some new protocol combinations are described. The relationships are developed for a description of the various protocols in terms of channel failure probabilities. Undetected error probabilities are developed and compared.
Document ID
19840063166
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Comroe, R. A.
(Motorola, Inc. Schaumburg, IL, United States)
Costello, D. J., Jr.
(Illinois Institute of Technology Chicago, IL, United States)
Date Acquired
August 12, 2013
Publication Date
July 1, 1984
Publication Information
Publication: IEEE Journal on Selected Areas in Communications
Volume: SAC-2
ISSN: 0733-8716
Subject Category
Communications And Radar
Accession Number
84A45953
Funding Number(s)
CONTRACT_GRANT: NAG2-202
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available