Results 131 to 140 of about 2,725 (185)

Joint Design of Hybrid Beamforming and Phase Shifts for IRS-Assisted Multi-User mmWave Systems. [PDF]

Sensors (Basel)
Zhang R, Wang Y.
europepmc   +1 more source

Short-Time Homomorphic Deconvolution (STHD): A Novel 2D Feature for Robust Indoor Direction of Arrival Estimation. [PDF]

Sensors (Basel)
Park Y, Kim JH.
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High-Accuracy Wave Direction Estimation Using Kalman Fusion of Interferometric Measurements and Energy Field Reconstruction. [PDF]

Sensors (Basel)
Wang C, Li X, Xue L.
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Comparison of machine learning models for mapping Arecanut based agroforestry system in Goa by enhancing precision and efficiency. [PDF]

Sci Rep
Uthappa AR, Das B, Chavan SB, Raizada A, Desai S, Paramesha V, Kumar P, Jha PK, Prasad PVV.   +8 more
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Crowdsourced biodiversity monitoring fills gaps in global plant trait mapping. [PDF]

Nat Commun
Lusk D, Wolf S, Svidzinska D, Dormann CF, Kattge J, Bruelheide H, Sabatini FM, Damasceno G, Moreno Martínez Á, Violle C, Hending D, Hähn GJA, Tabeni S, Phartyal S, Gonçalves F, Kreft H, Schmidt M, Chen H, Güler B, Dolezal J, Pielech R, Guido A, Dwyer C, Napoleone F, Willie J, Gasper AL, Macía MJ, Chytry M, Lenoir J, Thakur D, Dengler J, Świerszcz S, Altman J, Mucina L, Nerlekar AN, Kakinuma K, Rawat P, Stančić Z, Testolin R, Hatim MZ, Rodrigues F, Homeier J, Marques MCM, McCarthy JK, El-Sheikh MA, Korznikov K, Gerberding K, Kattenborn T.   +47 more
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Exploiting AoA Estimation Accuracy for Indoor Localization: A Weighted AoA-Based Approach

IEEE Wireless Communications Letters, 2019
For angle-of-arrival (AoA)-based localization methods, the AoA estimation accuracy would notably influence the localization performance. In this letter, we evaluate the estimation accuracy of different AoAs in a multipath environment and propose a weighted AoA-based localization approach.
Junyu Liu, Yang Zheng, Min Sheng
exaly   +2 more sources

Blind AoA Estimation With Hybrid Antenna Arrays

IEEE Transactions on Wireless Communications, 2021
Angle-of-arrival (AoA) information is vital for beamforming which is used to combat severe propagation loss in millimetre wave communications. Although blind AoA estimation has been extensively studied for digital array, few results were reported for hybrid array.
Huan-Tang Sheng, Wen-Rong Wu
openaire   +1 more source

LoRay: AoA Estimation System for Long Range Communication Networks

IEEE Transactions on Wireless Communications, 2021
In this paper, we introduce a comprehensive angle of arrival (AoA) estimation solution for the long range (LoRa) communication network. Termed the LoRa array (LoRay), the proposed system constitutes hardware and software solutions to estimate the AoA of the received signals in real life urban environments.
Noori Bnilam, Michiel Aernouts, Maarten Weyn   +2 more
exaly   +3 more sources

Single-Antenna AoA Estimation with UWB Radios

2021 IEEE Wireless Communications and Networking Conference (WCNC), 2021
Ultra-wideband (UWB) is becoming a major localization technology enabler for the indoor environment. Traditional localization systems rely on time-of-arrival (ToA)-based methods such as two-way ranging (TWR) and time difference of arrival (TDoA). Such solutions cannot scale due to interference from multiple devices sharing the same part of the wireless
Nour Smaoui, Milad Heydariaan, Omprakash Gnawali   +2 more
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Joint Channel and AoA Estimation in OFDM Systems: One Channel Tap With Multiple AoAs Problem

IEEE Communications Letters, 2021
Recently, a joint channel and angle-of-arrival (AoA) estimation scheme for pilot-assisted multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems with digital arrays has been proposed; in that scheme, compressive sensing-based time-domain channel estimation is applied. In the scheme, it is assumed that each channel
Wei-Han Hsiao, Wen-Rong Wu, Huan-Tang Sheng   +2 more
exaly   +2 more sources