TY - GEN
T1 - Hybrid Beam Alignment for Multi-Path Channels
T2 - 56th Asilomar Conference on Signals, Systems and Computers, ACSSC 2022
AU - Yildiz, Ozlem
AU - Khalili, Abbas
AU - Erkip, Elza
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - High-frequency bands such as millimeter-wave and terahertz require narrow beams due to path loss and shadowing. Beam alignment (BA) methods allow the transceivers to adjust the directions of these beams efficiently by exploiting the channel sparsity at high frequencies. This paper investigates BA for an uplink scenario, where the channel between the user equipment (UE) and base station (BS) consists of multiple paths. The BS wishes to find the best beams with a given resolution while using the least number of time slots. At each time slot of the BA, the UE transmits a BA packet and the BS uses hybrid beamforming to scan its angular region. To minimize the expected BA duration, a group testing framework is devised, and the associated novel analog and hybrid BA strategies are described. Simulation studies show the performance improvement both in noiseless and realistic 5G mm Wave BA settings.
AB - High-frequency bands such as millimeter-wave and terahertz require narrow beams due to path loss and shadowing. Beam alignment (BA) methods allow the transceivers to adjust the directions of these beams efficiently by exploiting the channel sparsity at high frequencies. This paper investigates BA for an uplink scenario, where the channel between the user equipment (UE) and base station (BS) consists of multiple paths. The BS wishes to find the best beams with a given resolution while using the least number of time slots. At each time slot of the BA, the UE transmits a BA packet and the BS uses hybrid beamforming to scan its angular region. To minimize the expected BA duration, a group testing framework is devised, and the associated novel analog and hybrid BA strategies are described. Simulation studies show the performance improvement both in noiseless and realistic 5G mm Wave BA settings.
UR - http://www.scopus.com/inward/record.url?scp=85150154977&partnerID=8YFLogxK
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U2 - 10.1109/IEEECONF56349.2022.10051965
DO - 10.1109/IEEECONF56349.2022.10051965
M3 - Conference contribution
AN - SCOPUS:85150154977
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 6
EP - 10
BT - 56th Asilomar Conference on Signals, Systems and Computers, ACSSC 2022
A2 - Matthews, Michael B.
PB - IEEE Computer Society
Y2 - 31 October 2022 through 2 November 2022
ER -