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Multicarrier-Division Duplex: A Duplexing Technique for Shift to 6G Wireless Communications

Multicarrier-Division Duplex: A Duplexing Technique for Shift to 6G Wireless Communications
Multicarrier-Division Duplex: A Duplexing Technique for Shift to 6G Wireless Communications
In-band full-duplex (IBFD) has the potential to not only double the spectral efficiency (SE) but also greatly reduce the transmission latency. However, the less maturity of existing self-interference cancellation (SIC) techniques renders IBFD impractical for future wireless applications. To inherit the merits of full-duplex (FD) but with practical SIC requirements, multicarrier-division duplex (MDD) was proposed and studied recently. In this article, we demonstrate the advantages of MDD over the IBFD mode and the conventional half-duplex (HD) modes of frequency-division duplex (FDD) and time-division duplex (TDD) from several essential aspects, including SIC capability, resource integration and the support for high-mobility communications. Several numerical results are included to show that MDD outperforms IBFD in terms of energy efficiency and SIC. Compared with the HD modes, MDD is capable of efficiently integrating the DL/UL resources to achieve higher SE and significantly outperforms TDD, when communicating over fast time-varying channels. Lastly, some implementation challenges of MDD systems are discussed.
Li, Bohan
79b7a5a4-0966-4611-805b-621d4ff9abb5
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Maunder, Robert
76099323-7d58-4732-a98f-22a662ccba6c
Xiao, Pei
48e5c554-b0e2-41a9-bf48-546628bc4bcc
Sun, Songlin
7edd623a-6d43-4aca-8ab3-d185fcb0a941
Li, Bohan
79b7a5a4-0966-4611-805b-621d4ff9abb5
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Maunder, Robert
76099323-7d58-4732-a98f-22a662ccba6c
Xiao, Pei
48e5c554-b0e2-41a9-bf48-546628bc4bcc
Sun, Songlin
7edd623a-6d43-4aca-8ab3-d185fcb0a941

Li, Bohan, Yang, Lie-Liang, Maunder, Robert, Xiao, Pei and Sun, Songlin (2021) Multicarrier-Division Duplex: A Duplexing Technique for Shift to 6G Wireless Communications. IEEE VechicularTechnology Magazine. (In Press)

Record type: Article

Abstract

In-band full-duplex (IBFD) has the potential to not only double the spectral efficiency (SE) but also greatly reduce the transmission latency. However, the less maturity of existing self-interference cancellation (SIC) techniques renders IBFD impractical for future wireless applications. To inherit the merits of full-duplex (FD) but with practical SIC requirements, multicarrier-division duplex (MDD) was proposed and studied recently. In this article, we demonstrate the advantages of MDD over the IBFD mode and the conventional half-duplex (HD) modes of frequency-division duplex (FDD) and time-division duplex (TDD) from several essential aspects, including SIC capability, resource integration and the support for high-mobility communications. Several numerical results are included to show that MDD outperforms IBFD in terms of energy efficiency and SIC. Compared with the HD modes, MDD is capable of efficiently integrating the DL/UL resources to achieve higher SE and significantly outperforms TDD, when communicating over fast time-varying channels. Lastly, some implementation challenges of MDD systems are discussed.

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MDD_VTM_Final - Accepted Manuscript
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Accepted/In Press date: 14 September 2021

Identifiers

Local EPrints ID: 451513
URI: http://eprints.soton.ac.uk/id/eprint/451513
PURE UUID: 4c0e760f-4bab-4137-98b5-491e43329cf1
ORCID for Bohan Li: ORCID iD orcid.org/0000-0001-7686-8605
ORCID for Lie-Liang Yang: ORCID iD orcid.org/0000-0002-2032-9327
ORCID for Robert Maunder: ORCID iD orcid.org/0000-0002-7944-2615

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Date deposited: 05 Oct 2021 16:31
Last modified: 06 Oct 2021 01:56

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Contributors

Author: Bohan Li ORCID iD
Author: Lie-Liang Yang ORCID iD
Author: Robert Maunder ORCID iD
Author: Pei Xiao
Author: Songlin Sun

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