NDLI: Propagation measurements at microwave frequencies for microcellular mobile and personal communications

Content Provider	IEEE Xplore Digital Library
Author	Rustako Jr., A.J. Amitay, N. Owens, G.J. Roman, R.S.
Copyright Year	1989
Description	Author affiliation: AT&T Bell Lab., Holmdel, NJ, USA (Rustako, A.J., Jr.; Amitay, N.; Owens, G.J.; Roman, R.S.)
Abstract	A series of measurements was conducted in both rural and semiurban areas to measure radio propagation characteristics at microwave and millimeter-wave frequencies in a microcellular mobile radio environment where transmission is essentially line-of-sight (LOS). Measurements were made at 11 GHz with a fixed-site antenna located at the side of the road at heights of up to 30 ft. Data have been taken with both omnidirectional and directional antennas on the mobile, to compare received signal characteristics. It was found that, in rural and semiurban environments, propagation is dominated by interference between the direct ray and a specular, roadway-reflected ray. The average power received does not decay any faster than 1/r/sup 2/ over the measured range of transmitter-to-receiver separation. A wideband communication channel looks feasible, since the dual-ray interference effects and the random components of the received signals can be overcome by simple methods such as higher antenna directivity or space diversity.
Starting Page	316
Ending Page	320
File Size	474134
Page Count	5
File Format	PDF
ISSN	10903038
DOI	10.1109/VETEC.1989.40095
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-05-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microwave propagation Microwave measurements Frequency measurement Microwave frequencies Antenna measurements Millimeter wave measurements Area measurement Interference Broadband antennas Radio propagation
Content Type	Text
Resource Type	Article

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