Shadow fading correlation between uplink and downlink

Selection diversity among base stations can be employed to combat shadow fading in mobile telephony. Selection of the strongest uplink received signal from a mobile at several base stations is straightforward. However, determining the base station from which to transmit to the mobile for downlink di...

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Main Authors: Perahia, E., Cox, D.C.
Format: Conference Proceeding
Language:English
Subjects:
Azimuth
Cities and towns
Downlink
Fading
GSM
Hospitals
Poles and towers
Sea level
System performance
Wireless communication
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Cox, D.C.
description Selection diversity among base stations can be employed to combat shadow fading in mobile telephony. Selection of the strongest uplink received signal from a mobile at several base stations is straightforward. However, determining the base station from which to transmit to the mobile for downlink diversity often relies on the assumption that shadow fading on the uplink is highly correlated with the shadow fading on the downlink. Signal level data were collected from a GSM system in rural and suburban propagation environments at 1900 MHz. After averaging out the small scale multipath fading, the correlation between uplink and downlink shadow fading ranged between 0.66 and 0.92. The experiment, environment and results are described.
doi_str_mv 10.1109/VETECS.2001.944854
format conference_proceeding
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ispartof IEEE VTS 53rd Vehicular Technology Conference, Spring 2001. Proceedings (Cat. No.01CH37202), 2001, Vol.1, p.308-312 vol.1
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2577-2465
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Azimuth
Cities and towns
Downlink
Fading
GSM
Hospitals
Poles and towers
Sea level
System performance
Wireless communication
title Shadow fading correlation between uplink and downlink
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