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Record 1 of 11132
Mobile Propagation Results from Using the ACTS Mobile Terminal
Author and Affiliation:
Pinck, Deborah(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA United States)
Rice, Michael D.(Brigham Young Univ., Provo, UT United States)
Abstract: NASA's Advanced Communications Technology Satellite (ACTS) provides an ideal spaced-based platform for analyzing the Ka-band mobile satellite channel. This paper reports on the results of the Ka-band mobile propagation analysis campaign using the ACTS Mobile Terminal (AMT) developed by the Jet Propulsion Laboratory (JPL). The objectives of the mobile propagation experiments were to measure and analyze the fading characteristics of the Ka-band channel. The analysis involved examining pilot tone tests in three environments: lightly shadowed suburban, moderately shadowed suburban, and heavily shadowed suburban. The results indicate that Ka-band pilot tones experience significant multipath and fading effects. It may be possible to design link margins to provide reliable service for the lightly shadowed suburban environment at Ka-band. However, for areas with moderate and heavy shadowing, the link margin required to realize reliable communications with 99% availability is excessive (26 dB for moderate shadowing, and greater then 30 dB for heavy shadowing). An alternate approach would be to use shadowing/fading countermeasures (e.g., interleaved error control coding and antenna diversity). Such mitigation techniques, necessary for reliable Ka-band mobile communication within a suburban environment, are currently being considered within the NASA program.
Publication Date: May 01, 1996
Document ID:
19960026915
(Acquired Aug 07, 1996)
Accession Number: 96N28431
Subject Category: COMMUNICATIONS AND RADAR
Document Type: Conference Paper
Publication Information: Advanced Communication Technology Satellite Results Conference; Part 2; (NASA-CP-10183); (SEE 19960026901)
Financial Sponsor: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA United States
Description: 1p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: ACTS; MOBILE COMMUNICATION SYSTEMS; EARTH TERMINALS; SATELLITE COMMUNICATION; MULTIPATH TRANSMISSION; RADIO ATTENUATION; GROUND EFFECT (COMMUNICATIONS); SIGNAL FADING; RADIO COMMUNICATION; EXTREMELY HIGH FREQUENCIES; ATMOSPHERIC ATTENUATION; DATA LINKS
Availability Source: Other Sources
Availability Notes: Abstract Only
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