Deep Unfolding-Powered Analog Beamforming for In-Band Full-Duplex
Bilbao, Inigo; Iradier, Eneko; Montalban, Jon; Angueira, Pablo; Nguyen, Nhan Thanh; Juntti, Markku (2024-06-21)
IEEE
21.06.2024
I. Bilbao, E. Iradier, J. Montalbán, P. Angueira, N. Thanh Nguyen and M. Juntti, "Deep Unfolding-Powered Analog Beamforming for In-Band Full-Duplex," in IEEE Open Journal of the Communications Society, vol. 5, pp. 3753-3761, 2024, doi: 10.1109/OJCOMS.2024.3417349.
https://creativecommons.org/licenses/by-nc-nd/4.0/
© 2024 The Authors. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. For more information, see https://creativecommons.org/licenses/by-nc-nd/4.0/.
https://creativecommons.org/licenses/by-nc-nd/4.0/
© 2024 The Authors. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. For more information, see https://creativecommons.org/licenses/by-nc-nd/4.0/.
https://creativecommons.org/licenses/by-nc-nd/4.0/
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202408075254
https://urn.fi/URN:NBN:fi:oulu-202408075254
Tiivistelmä
Abstract
In-band full-duplex (IBFD) can double the spectral efficiency of wireless communications systems. However, its major drawback is the self-interference, which interferes with the desired signal at the terminal. Self-interference cancelation can be operated in antenna, analog, and digital domains. In the antenna domain, beamformers are designed to minimize the leaked signal entering the system. This paper proposes an efficient analog beamforming design to maximize the channel achievable rate of massive multiple-input multiple-output (MIMO) IBFD systems. Specifically, we propose a low-complexity deep unfolding technique that provides a significantly better achievable rate than the state-of-the-art to deal with the non-convex design objective and constraints. More concretely, a complexity reduction of 75% is achieved for some scenarios, and of 50% is reached for the rest.
In-band full-duplex (IBFD) can double the spectral efficiency of wireless communications systems. However, its major drawback is the self-interference, which interferes with the desired signal at the terminal. Self-interference cancelation can be operated in antenna, analog, and digital domains. In the antenna domain, beamformers are designed to minimize the leaked signal entering the system. This paper proposes an efficient analog beamforming design to maximize the channel achievable rate of massive multiple-input multiple-output (MIMO) IBFD systems. Specifically, we propose a low-complexity deep unfolding technique that provides a significantly better achievable rate than the state-of-the-art to deal with the non-convex design objective and constraints. More concretely, a complexity reduction of 75% is achieved for some scenarios, and of 50% is reached for the rest.
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