Full-duplex Wireless

Theoretical foundations, practical protocol design, and experimental evaluation.

In-band full-duplex wireless, which enables simultaneous transmission and reception in the same frequency band and at the same time, can increase the spectral efficiency of practical systems. Full-duplex breaks one of the fundamental assumption in wireless network design; current networks are either half-duplex in time (like WiFi) and frequency (like most cellular). We are, thus, designing all layers in full-duplex enabled networks. Our methodology is a mix of theoretical foundations, practical protocol design, and experimental evaluation. 

Ashu Sabharwal


Our work on full-duplex wireless at Rice started in early 2009, with first publication in 2010; e.g. see papers by Duarte, Everett, Sahai and Sabharwal (see [C1, C2, C3, C4, C5, J1, J4, J5, J9] in Publications). Since then, our research on full-duplex has expanded considerably to address massive MIMO full-duplex, use of full-duplex to reduce control channel overhead and reduce network delay, network protocols to manage increased inter-node interference and network-scale analyses.

See the latest talk on Massive MIMO Full-duplex, presented at Columbia University, April 2017.  The associated papers can be downloaded in the Publications Section. See recent news in Broader Impact Section: best systems paper award in last 5 years and communications theory advances award (awarded to a paper published in last 15 years).

Full-duplex has been adopted for next-generation cable modems as CableLabs DOCSIS-4.0 standard.

Also, join the mailing list of IEEE Communications Society Full Duplex Communications Emerging Technology Inititaitives.

Funding Support: The research is supported by grants from NSF (Grant 1314937), Xilinx, Intel Labs and Qualcomm.

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