Beam-Space MUSIC DOA System Using Phase Shifter

Seung-Wook NAH, Hiroyuki ARAI

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Summary :

This paper presents a low cost and portable DOA (Direction Of Arrival) estimation system for surveillance using a modifed beamspace MUSIC (MUltiple Signal Classification) by a quasi-orthogonal multi-beam. This is instead of DFT processing and hardware system consisting of chip-sized phase shifters, a single ADC (Analogue to Digital Converter) and a single TR (TRanceiver) module for an antenna array. In the beamspace MUSIC, generated beampatterns have orthogonal properties. This proposed system cannot make such a beampattern due to the variable range limitation of phase shifter, then we use the quasi-orthogonal beam obtained by the calculation of correlation coefficient for beampattern. We demonstrate the proposed system using 4-element microstrip array antenna and chip-sized phase shifters. The DOA experiment in anechoic chamber confirms the proposed system performance.

Publication
IEICE TRANSACTIONS on Communications Vol.E90-B No.2 pp.291-295
Publication Date
2007/02/01
Publicized
Online ISSN
1745-1345
DOI
10.1093/ietcom/e90-b.2.291
Type of Manuscript
PAPER
Category
Wireless Communication Technologies

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