Pathway to coherent phase acquisition in multi-channel USRP SDRs for direction of arrival estimation
Xhafa, Alda (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes)
Fabra, Fran (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes)
López Salcedo, José Antonio (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes)
Seco Granados, Gonzalo (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes)
Lapin, Ivan (European Space Agency (Noordwijk))

Imprint:	Institute of Electrical and Electronics Engineers, 2023
Description:	8 pàg.
Abstract:	This paper sheds lights onto the challenging problem of achieving coherent phase reception between the RF channels of existing multi-channel software-defined radios (SDR). This is a key problem that must be solved, for instance, in applications dealing with 5G positioning and integrated sensing and communications (ISAC) when direction of arrival estimation is needed. Despite being a fundamental problem, it is far from being straightforward to implement in practice with existing SDR devices. In this regard, the present paper provides a set of golden guidelines in order to succeed in this endeavor, and thus to leverage the full potential that multi-channel SDR devices have to offer. Apart from phase coherence, practical recommendations are provided as well to achieve the highest possible data throughput between the SDR and the controlling computer. Finally, a comparison among the most relevant features of different models of Universal Software Radio Peripheral (USRP) SDR devices is discussed, including an analysis of their performance in terms of phase differences between RF channels.
Grants:	Agencia Estatal de Investigación PDC2021-121362-I00 Agencia Estatal de Investigación PID2020-118984GB-I00
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Language:	Anglès
Document:	Capítol de llibre ; recerca ; Versió acceptada per publicar
Subject:	5G ; Coherent Phase ; Direction-of-Arrival ; SDR ; Synchronization ; USRP
Published in:	2023 Tenth International Conference on Software Defined Systems (SDS), 2023, p. 1-8, ISBN 979-8-3503-8223-5

DOI: 10.1109/SDS59856.2023.10329093

Available from: 2026-10-11 Postprint

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Engineering > Signal Processing for Communications and Navigation (SPCOMNAV)
Books and collections > Book chapters