Smart antenna spatial sweeping for combined directionality and transmit diversity

In this paper, we present a novel application for antenna arrays in wireless communication systems. Here, antenna arrays at the base station are used to create 1) directionality which supports spatial multiplexing and 2) a scanning beam pattern, allowing receivers at the mobile unit to subdivide the...

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Bibliographic Details
Published in:Journal of communications and networks 2000-12, Vol.2 (4), p.325-330
Main Authors: Zekavat, Seyed Alireza, Nassar, Carl R., Shattil, Steve
Format: Article
Language:English
Subjects:
Antenna arrays
directionality
Diversity methods
Diversity reception
Mobile antennas
Mobile communication
Receivers
scanning beam pattern
smart antenna
time diversity
Transmit diversity
Transmitting antennas
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Description
Summary:In this paper, we present a novel application for antenna arrays in wireless communication systems. Here, antenna arrays at the base station are used to create 1) directionality which supports spatial multiplexing and 2) a scanning beam pattern, allowing receivers at the mobile unit to subdivide the symbol time into L partitions, each with independent fades. Combining the signals received in different symbol time partitions (at the mobile unit) results in diversity gains. In this way, diversity benefits (due to an antenna array) are achieved at the mobile unit with the smart antenna array located at the base station (rather than in the mobile itself), a significant cost saving for wireless communication systems.
ISSN:1229-2370
1976-5541
DOI:10.1109/JCN.2000.6596766