Experimentation with full-duplex wireless in the COSMOS testbed

Tingjun Chen, Jackson Welles, Manav Kohli, Mahmood Baraani Dastjerdi, Jakub Kolodziejski, Michael Sherman, Ivan Seskar, Harish Krishnaswamy, Gil Zussman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In order to support experimentation with full-duplex (FD) wireless, we integrated the FlexICoN Gen-2 wideband FD radio with the city-scale PAWR COSMOS testbed [1]. In particular, the implemented FD radio consists of an antenna, a customized Gen-2 RF self-interference (SI) canceller box, a USRP software-defined radio (SDR), and a compute node. The RF canceller box includes an RF SI canceller implemented using discrete components on a printed circuit board (PCB), which emulates its RFIC canceller counterpart. The Gen-2 RF SI canceller achieves 50dB RF SI cancellation across 20MHz bandwidth using the technique of frequency-domain equalization (FDE) [2]. In this abstract, we present the design and implementation of the remotely accessible Gen-2 wideband FD radio integrated with the COSMOS sandbox at Columbia University. We also present an example real-time wideband FD wireless link demonstration using the GNU Radio software.

Original languageEnglish (US)
Title of host publication27th IEEE International Conference on Network Protocols, ICNP 2019
PublisherIEEE Computer Society
ISBN (Electronic)9781728127002
DOIs
StatePublished - Oct 2019
Event27th IEEE International Conference on Network Protocols, ICNP 2019 - Chicago, United States
Duration: Oct 7 2019Oct 10 2019

Publication series

NameProceedings - International Conference on Network Protocols, ICNP
Volume2019-October

Conference

Conference27th IEEE International Conference on Network Protocols, ICNP 2019
Country/TerritoryUnited States
CityChicago
Period10/7/1910/10/19

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Software

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