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• W2893561068 abstract "Antenna design and angle-of-arrival (AoA) estimation are critical to the efficiency of wireless information and power transfer. The AoA estimation is challenging for energy-efficient lens antenna arrays (LAAs), due to discrete sets of fixed discrete Fourier transform (DFT) beams. This paper presents a novel fast and accurate approach for the AoA estimation of LAAs. The key idea is that we prove the two differential outputs of three adjacent lens beams, referred to as “DFT beam differences (DBDs),” that are the strongest at the two sides of an AoA. They are easy to identify and robust to noises, and their powers are proved to provide an accurate estimate of the AoA. Another important aspect is a new beam synthesis technique which produces different beam widths based on DFT beams and practical 1-bit phase shifts in real time. As a result, the angular region containing the AoA can exponentially narrow down, and the two strongest DBDs can be quickly identified. The proposed approach can operate in coupling with successive interference cancellation to estimate the AoAs of multiple paths. Simulations show that the proposed approach is able to outperform the state of the art by orders of magnitude in terms of accuracy. The power transfer efficiency can be dramatically improved." @default.
• W2893561068 created "2018-10-05" @default.
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• W2893561068 date "2019-01-01" @default.
• W2893561068 modified "2023-10-06" @default.
• W2893561068 title "Efficient Angle-of-Arrival Estimation of Lens Antenna Arrays for Wireless Information and Power Transfer" @default.
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• W2893561068 doi "https://doi.org/10.1109/jsac.2018.2872363" @default.
• W2893561068 hasPublicationYear "2019" @default.
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