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Synchronization of multiple USRP SDRs for coherent receiver applications

Krueckemeier, Markus; Schwartau, Fabian; Monka-Ewe, Carsten; Schoebel, Joerg


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  <dc:creator>Krueckemeier, Markus</dc:creator>
  <dc:creator>Schwartau, Fabian</dc:creator>
  <dc:creator>Monka-Ewe, Carsten</dc:creator>
  <dc:creator>Schoebel, Joerg</dc:creator>
  <dc:date>2019-10-29</dc:date>
  <dc:description>This paper describes the necessary means to combine multiple Ettus Research USRP X310 software-defined radios to a multichannel coherent receiver for direction-of-arrival (DoA) and passive radar applications. The requirements to combine several software-defined radios to a multichannel coherent receiver are examined in general. In particular the requirement of phase coherence necessitates a closer look on the receiver synchronization, since the straightforward approach of synchronizing the systems with a common reference clock will in most cases lead to phase ambiguities between the channels. The mechanism inducing these phase ambiguities between several systems that are phase-locked to a common reference is discussed in detail. Results regarding the achieved phase stability and a preliminary measurement demonstrating the DoA capabilities of the system are shown.</dc:description>
  <dc:identifier>https://zenodo.org/record/3522157</dc:identifier>
  <dc:identifier>10.1109/SDS.2019.8768634</dc:identifier>
  <dc:identifier>oai:zenodo.org:3522157</dc:identifier>
  <dc:language>eng</dc:language>
  <dc:relation>info:eu-repo/grantAgreement/EC/H2020/700002/</dc:relation>
  <dc:relation>url:https://zenodo.org/communities/alfa</dc:relation>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>https://creativecommons.org/licenses/by/4.0/legalcode</dc:rights>
  <dc:title>Synchronization of multiple USRP SDRs for coherent receiver applications</dc:title>
  <dc:type>info:eu-repo/semantics/preprint</dc:type>
  <dc:type>publication-preprint</dc:type>
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