2019 53rd Asilomar Conference on Signals, Systems, and Computers 2019
DOI: 10.1109/ieeeconf44664.2019.9048867
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Analog Beamforming For Active Imaging Using Sparse Arrays

Abstract: This paper studies hybrid beamforming for active sensing applications, such as millimeter-wave or ultrasound imaging. Hybrid beamforming can substantially lower the cost and power consumption of fully digital sensor arrays by reducing the number of active front ends. Sparse arrays can be used to further reduce hardware costs. We consider phased arrays and employ linear beamforming with possibly sparse sensor configurations at both the transmitter and receiver. The quality of the acquired images is improved by … Show more

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Cited by 7 publications
(7 citation statements)
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“…A necessary condition for (12) to hold for any w Σ ∈ C NΣ is therefore that Q(N t + N r − Q) ≥ N Σ . This quadratic inequality directly yields the bound in (22).…”
Section: A Fully Digital Beamformermentioning
confidence: 86%
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“…A necessary condition for (12) to hold for any w Σ ∈ C NΣ is therefore that Q(N t + N r − Q) ≥ N Σ . This quadratic inequality directly yields the bound in (22).…”
Section: A Fully Digital Beamformermentioning
confidence: 86%
“…We address the general case when the analog beamforming network consists of phase shifters with quantized phases. In a related work, we study the special case of a single front end connected to phase shifters with continuous phases [22]. The paper is organized as follows.…”
Section: A Contributions and Organization Of Papermentioning
confidence: 99%
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