Linear Array Design with Switched Beams for Wireless Communications Systems
This paper presents an analysis for optimal design of switched beamforming applied to a linear array for wireless communication systems. The beam switching scheme provides coverage of a given sector in azimuth and controls the sidelobe level simultaneously. The analysis was developed considering arr...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Hindawi Limited
2015-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2015/278160 |
| Summary: | This paper presents an analysis for optimal design
of switched beamforming applied to a linear array for wireless
communication systems. The beam switching scheme provides
coverage of a given sector in azimuth and controls the sidelobe
level simultaneously. The analysis was developed considering
arrays composed of Quasi-Yagi elements. The model assumes a
user moving in the azimuthal direction under a constant velocity
and with an estimation of the signal-to-noise ratio (SNR) at the
mobile user (MU). The radio base station applies the beam that
yields the best performance during transmission. The decision is
based on the feedback information received from the MU. The
goal of the analysis is to determine the best trade-off between the
array size and number of feedback bits necessary to maximize the
SNR at the receiver. The results show that a compromise between
the number of beam-pointing directions and the array size should
be taken into consideration for a wireless communication system
design. |
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| ISSN: | 1687-5869 1687-5877 |