Conference paper Open Access

FPGA-Based Testbed for Synchronization on Ethernet Fronthaul with Phase Noise Measurements

Joary Paulo; Igor Freire; Ilan Sousa; Chenguang Lu; Miguel Berg; Igor Almeida; Aldebaro Klautau


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    <subfield code="a">© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
This work was supported in part by the Innovation Center, Ericsson Telecomunicacoes S.A., Brazil, the Capes Foundation, Brazil, and by the European Union through the 5GCrosshaul project (H2020-ICT-2014/671598).</subfield>
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    <subfield code="d">29 August -3 September 2016</subfield>
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    <subfield code="a">International Symposium on Instrumentation Systems, Circuits and Transducers</subfield>
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    <subfield code="u">Federal University of Pará</subfield>
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    <subfield code="a">Chenguang Lu</subfield>
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    <subfield code="a">Miguel Berg</subfield>
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    <subfield code="u">Federal University of Pará</subfield>
    <subfield code="a">Aldebaro Klautau</subfield>
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    <subfield code="u">https://zenodo.org/record/1069012/files/2016_Paulo_FPGA-Based_Testbed_for_Synchronization_on_Ethernet_Fronthaul_with_Phase_Noise_Measurement.pdf</subfield>
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    <subfield code="a">Joary Paulo</subfield>
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    <subfield code="a">FPGA-Based Testbed for Synchronization on Ethernet Fronthaul with Phase Noise Measurements</subfield>
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    <subfield code="a">5G-Crosshaul: The 5G Integrated fronthaul/backhaul</subfield>
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    <subfield code="a">&lt;p&gt;Cloud radio access network (C-RAN) is a recent&amp;nbsp;trend of RAN architecture positioned to help the operators to&amp;nbsp;address challenges of new wireless services, such as emerging&amp;nbsp;4G and 5G mobile networks. C-RAN uses baseband processing&amp;nbsp;units in a central server which connects to the radio front-ends&amp;nbsp;at cell sites via the so-called fronthaul network. The fronthaul&amp;nbsp;infrastructure is currently provided by CPRI (Common Public&lt;br&gt;
Radio Interface) and OBSAI (Open Basestation Architecture&amp;nbsp;Initiative) industry standards which use dedicated optical links&amp;nbsp;with high deployment costs. An alternative is to use Ethernet&amp;nbsp;technology aiming to reuse of network infrastructure available&amp;nbsp;in many commercial buildings. However, in contrast to the&lt;br&gt;
traditional synchronous fronthaul, Ethernet suffers with packet&amp;nbsp;delay variation (PDV) and challenging synchronization recovery.&lt;br&gt;
This work presents a complete and flexible testbed to evaluate&amp;nbsp;Ethernet-based fronthaul. The system is validated via extensive&amp;nbsp;measurements that show the effects of synchronization procedures&amp;nbsp;and network impairments on regenerated clock phase&amp;nbsp;noise.&lt;/p&gt;</subfield>
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