Next Article in Journal
Smartwatch-Based Eating Detection: Data Selection for Machine Learning from Imbalanced Data with Imperfect Labels
Next Article in Special Issue
A Review of Remote Sensing Image Dehazing
Previous Article in Journal
Analytical Approach to Sampling Estimation of Underwater Tunnels Using Mechanical Profiling Sonars
Previous Article in Special Issue
A Spoof Surface Plasmon Polaritons (SSPPs) Based Dual-Band-Rejection Filter with Wide Rejection Bandwidth
 
 
Communication

Angle-of-Arrival Estimation Using Difference Beams in Localized Hybrid Arrays

School of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, China
*
Author to whom correspondence should be addressed.
Academic Editor: Shuai Zhang
Sensors 2021, 21(5), 1901; https://doi.org/10.3390/s21051901
Received: 26 January 2021 / Revised: 15 February 2021 / Accepted: 22 February 2021 / Published: 9 March 2021
(This article belongs to the Special Issue Communications and Sensing Technologies for the Future)
Angle-of-arrival (AoA) estimation in localized hybrid arrays suffers from phase ambiguity owing to its localized structure and vulnerability to noise. In this letter, we propose a novel phase shift design, allowing each subarray to exploit difference beam steering in two potential AoA directions. This enables the calibration of cross-correlations and an enhanced phase offset estimation between adjacent subarrays. We propose two unambiguous AoA estimation schemes based on the even and odd ratios of the number of antennas per subarray N to the number of different phase shifts per symbol K (i.e., N/K), respectively. The simulation results show that the proposed approach greatly improves the estimation accuracy as compared to the state of the art when the ratio N/K is even. View Full-Text
Keywords: hybrid array; localized subarrays; angle-of-arrival estimation; mmWave communications hybrid array; localized subarrays; angle-of-arrival estimation; mmWave communications
Show Figures

Figure 1

MDPI and ACS Style

Li, H.; Cheng, Z. Angle-of-Arrival Estimation Using Difference Beams in Localized Hybrid Arrays. Sensors 2021, 21, 1901. https://doi.org/10.3390/s21051901

AMA Style

Li H, Cheng Z. Angle-of-Arrival Estimation Using Difference Beams in Localized Hybrid Arrays. Sensors. 2021; 21(5):1901. https://doi.org/10.3390/s21051901

Chicago/Turabian Style

Li, Hang, and Zhiqun Cheng. 2021. "Angle-of-Arrival Estimation Using Difference Beams in Localized Hybrid Arrays" Sensors 21, no. 5: 1901. https://doi.org/10.3390/s21051901

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop