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Full Duplex Prototype of OFDM on GNURadio and USRPs

Wei Zhou 1 Guillaume Villemaud 1, * Tanguy Risset 1 
* Corresponding author
1 SOCRATE - Software and Cognitive radio for telecommunications
Inria Grenoble - Rhône-Alpes, CITI - CITI Centre of Innovation in Telecommunications and Integration of services
Abstract : Full-duplex is a technology in telecommunication domain that can perform transmitting and receiving at the same time and in the same frequency band. The major obstacle of full-duplex is the self-interference (SI). Some previous works have focused on the SI cancellation in radio frequency (RF), and generally on a narrowband signal model. We have implemented a full-duplex prototype with orthogonal frequency-division multiplexing (OFDM) technology on GNURadio and Universal Software Radio Peripherals (USRP). We focus on the baseband, namely the digital part of the SI cancellation. Our testbed can achieve a digital cancellation of 27dB. After the cancellation, the signal of interest can achieve a bit error rate (BER) in the scale of 105 at 4 meters, which is very close to the performance of half-duplex. This is, to our knowledge, the first full duplex implementation for OFDM technology.
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Submitted on : Thursday, December 19, 2013 - 1:54:20 PM
Last modification on : Wednesday, March 9, 2022 - 3:30:40 PM
Long-term archiving on: : Thursday, March 20, 2014 - 11:46:37 AM


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  • HAL Id : hal-00920902, version 1



Wei Zhou, Guillaume Villemaud, Tanguy Risset. Full Duplex Prototype of OFDM on GNURadio and USRPs. IEEE Radio Wireless Symposium, Jan 2014, Newport Beach, United States. ⟨hal-00920902⟩



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