Phase-coherent multichannel SDR - Sparse array beamforming

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Journal Title
Journal ISSN
Volume Title
Conference article in proceedings
Date
2020
Major/Subject
Mcode
Degree programme
Language
en
Pages
5
1856-1860
Series
28th European Signal Processing Conference, EUSIPCO 2020 - Proceedings, European Signal Processing Conference
Abstract
We introduce a modular and affordable coherent multichannel software-defined radio (SDR) receiver and demonstrate its performance by direction-of-arrival (DOA) estimation on signals collected from a 7 X 3 element uniform rectangular array antenna, comparing the results between the full and sparse arrays. Sparse sensor arrays can reach the resolution of a fully populated array with reduced number of elements, which relaxes the required structural complexity of e.g. antenna arrays. Moreover, sparse arrays facilitate significant cost reduction since fewer expensive RF-IF front ends are needed. Results from the collected data set are analyzed with Multiple Signal Classification (MUSIC) DOA estimator. Generally, the sparse array estimates agree with the full array.
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Keywords
Coherent receiver, DOA estimation, Sparse array
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Citation
Laakso, M, Rajamäki, R, Wichman, R & Koivunen, V 2020, Phase-coherent multichannel SDR - Sparse array beamforming . in 28th European Signal Processing Conference, EUSIPCO 2020 - Proceedings ., 9287664, European Signal Processing Conference, European Association For Signal and Imag Processing, pp. 1856-1860, European Signal Processing Conference, Amsterdam, Netherlands, 24/08/2020 . https://doi.org/10.23919/Eusipco47968.2020.9287664