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Journal Article Empirical Investigation of Array Beamforming Effects on Received Power and Delay Spread Characteristics based on 159 GHz Measurements
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Authors
Juyul Lee, Myung-Don Kim, Jae-Joon Park
Issue Date
2025-02
Citation
IEEE Wireless Communications Letters, v.47, no.2, pp.1042-1055
ISSN
2162-2337
Publisher
IEEE Communications Society
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1109/LWC.2024.3507615
Abstract
Array beamforming is vital for high-frequency communications, yet its impact on propagation channels remains unclear. This letter investigates the effects of uniform linear array beamforming on received power and delay spread by applying array beam patterns to actual outdoor and indoor measurement data at 159 GHz. We examine both single- and multi-directional beamforming. Our results show that the received power is affected by both the number of array elements and the environment types. Moreover, the delay spread is significantly reduced compared to the omnidirectional case and decreases further as the number of elements increases, up to eight, in our measurements.
KSP Keywords
Delay spread, Empirical investigation, High frequency(HF), Number of array elements, Propagation Channel, Received Power, Uniform Linear Array(ULA), array beamforming, measurement data, multi-directional