Scalable In-Band Full-Duplex Phased Arrays: Complexity Reduction and Distributed Processing

Kolodziej, Kenneth E.; Janice, Brian A.; Sands, Adrienne I.; Perry, Beth

doi:10.1109/jsac.2023.3287543

Cited by 8 publications

(1 citation statement)

References 39 publications

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“…P HASED array systems with in-band full-duplex (IBFD) [1] capability can transmit (Tx) and receive (Rx) simultaneously at the same carrier frequency. This can increase spectral efficiency in wireless communication systems [2], [3] and can unlock functionalities such as enhanced continuouswave sensing [4], [5], integrated sensing and communications [6], [7], and spectrum sensing.…”

Section: Introductionmentioning

confidence: 99%

Per-Antenna Self-Interference Cancellation Beamforming Design for Digital Phased Array

Liu

Sheng

Riihonen

2022

IEEE Signal Process. Lett.

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This letter develops a novel transmit beamforming (BF) design for canceling self-interference (SI) in analog in-band full-duplex phased arrays. Our design maximizes transmit BF gain in a desired direction while simultaneously reducing SI power to below a specified threshold on per-antenna basis to avoid saturating receive-chain components, such as LNAs. Core to our approach is that it accounts for real-world phase shifters used in analog phased array systems, whose limited resolution imposes non-convex constraints on BF design. We overcome this by transforming these non-convex constraints into convex polygon constraints, which we then solve through semidefinite relaxation and a rank refinement procedure. Numerical results show that our proposed BF scheme reliably cancels SI to the target power threshold at each receive antenna while sacrificing little in transmit BF gain, even with modest phase shifter resolution.

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Section: Introductionmentioning

confidence: 99%

Per-Antenna Self-Interference Cancellation Beamforming Design for Digital Phased Array

Liu

Sheng

Riihonen

2022

IEEE Signal Process. Lett.

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A Comprehensive Survey on Full-Duplex Communication: Current Solutions, Future Trends, and Open Issues

Mohammadi,

Mobini,

Galappaththige

et al. 2023

IEEE Commun. Surv. Tutorials

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Full-duplex (FD) communication is a potential game changer for future wireless networks. It allows for simultaneous transmit and receive operations over the same frequency band, a doubling of the spectral efficiency. FD can also be a catalyst for supercharging other existing/emerging wireless technologies, including cooperative and cognitive communications, cellular networks, multiple-input multiple-output (MIMO), massive MIMO, non-orthogonal multiple access (NOMA), millimeterwave (mmWave) communications, unmanned aerial vehicle (UAV)-aided communication, backscatter communication (Back-Com), and reconfigurable intelligent surfaces (RISs). These integrated technologies can further improve spectral efficiency, enhance security, reduce latency, and boost the energy efficiency of future wireless networks. A comprehensive survey of such integration has thus far been lacking. This paper fills that need. Specifically, we first discuss the fundamentals, highlighting the FD transceiver structure and the self-interference (SI) cancellation techniques. Next, we discuss the coexistence of FD with the above-mentioned wireless technologies. We also provide case studies for some of the integration scenarios mentioned above and future research directions for each case. We further address the potential research directions, open challenges, and applications for future FD-assisted wireless, including cell-free massive MIMO, mmWave communications, UAV, BackCom, and RISs. Finally, potential applications and developments of other miscellaneous technologies, such as mixed radio-frequency/freespace optical, visible light communication, dual-functional radarcommunication, underwater wireless communication, multi-user ultra-reliable low-latency communications, vehicle-to-everything communications, rate splitting multiple access, integrated sensing and communication, and age of information, are also highlighted.

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In-Band Full-Duplex: The Physical Layer

Smida,

Wichman,

Kolodziej

et al. 2024

Proc. IEEE

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Scalable In-Band Full-Duplex Phased Arrays: Complexity Reduction and Distributed Processing

Cited by 8 publications

References 39 publications

Per-Antenna Self-Interference Cancellation Beamforming Design for Digital Phased Array

Per-Antenna Self-Interference Cancellation Beamforming Design for Digital Phased Array

A Comprehensive Survey on Full-Duplex Communication: Current Solutions, Future Trends, and Open Issues

In-Band Full-Duplex: The Physical Layer

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