NDLI: Communications diversity advantages for the Mobile User Objective System

Content Provider	IEEE Xplore Digital Library
Author	Kullstam, P.A.
Copyright Year	2000
Description	Author affiliation: PAIRCOM Inc., Springfield, VA, USA (Kullstam, P.A.)
Abstract	The UHF radio frequency (RF) band available for the our future military Mobile User Objective System (MUOS) satellite communications system has to contend with the signal scintillation effects encountered from propagation through the ionosphere as well as multipath signals from terrestrial signal reflections that will be prominent with new handheld terminals. These effects cause signal fading which can severely degrade the communications performance, but fortunately there are a multitude of diversity techniques which can greatly improve the performance as well. In this report we consider: (1) implicit channel diversity over (1a) coherent bandwidth limited channels and (1b) time dispersion by using interleaving and coding, as well as (2) explicit channel diversity employing different (2a) carrier frequencies and (2b) propagation paths. All these techniques can gainfully be used with the MUOS although frequency diversity may be less applicable on the UHF Earth terminal uplink. The material presented should be useful in the system design and evaluation of various system realization concepts.
Starting Page	784
Ending Page	788
File Size	432055
Page Count	5
File Format	PDF
ISBN	0780365216
DOI	10.1109/MILCOM.2000.904037
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-10-22
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Mobile communication RF signals Radio frequency Frequency diversity Military communication Satellite communication UHF propagation Ionosphere Reflection Fading
Content Type	Text
Resource Type	Article

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