Columbia University

Full-duplex Wireless: From Integrated Circuits to Networks (FlexICoN)

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The growing demand for wireless bandwidth and congestion of the wireless spectrum call for the design of spectrum efficient methods to support emerging new 5G standards. Full-duplex communication — simultaneous transmission and reception on the same frequency channel — is an emerging and transformative communication technology that can substantially improve spectrum efficiency.

To bring full-duplex communication closer to practical implementation and evaluate the benefits of using such a technology, we have been performing research as a part of the Full-duplex Wireless: From Integrated Circuits to Networks (FlexICoN) project. This is a cross-disciplinary multi-PI research effort to exploit the interactions between the physical and the higher layers in full-duplex systems.

At the WiMNet lab, we have been evaluating the benefits of full-duplex communication based on realistic full-duplex hardware models, for the hardware that was designed and developed within the FlexICoN project. Our results include insightful analytical and algorithmic results for power control on full-duplex links. We have also quantified the achievable full-duplex gains in various full-duplex communication scenarios. Our current research efforts are directed towards the design of joint scheduling and resource allocation algorithms for Wi-Fi and small-cell cellular networks. We are also developing a full-duplex testbed that will be used for implementation and evaluation of our algorithmic results.

An overview of the project is available in an IEEE Spectrum Article (July 2016).

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