Feasibility of DFT-s-OFDM in 6G Downlink: Coverage and Energy-Efficiency Assessment

Lauri Anttila; Vili Toivonen; Oskari Tervo; Esa Tiirola; Kari Hooli; Jukka Talvitie; Mikko Valkama

doi:10.1109/EuCNC/6GSummit60053.2024.10597123

Feasibility of DFT-s-OFDM in 6G Downlink: Coverage and Energy-Efficiency Assessment

Lauri Anttila, Vili Toivonen, Oskari Tervo, Esa Tiirola, Kari Hooli, Jukka Talvitie, Mikko Valkama

Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

Abstract

The future 6G mobile communication systems are expected not only to improve the broadband connectivity and other services but also enhance the network coverage, energy-efficiency and sustainability. In this paper, we address the coverage and energy-efficiency challenges, and study the feasibility of discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) as the potential downlink physical-layer radio access waveform. Building on the prevailing 5G New Radio (NR) downlink transmit signal quality requirements and behavior of contemporary power amplifier (PA) systems, we assess and show the available downlink coverage gain and energy saving potential, compared to ordinary cyclic prefix (CP) OFDM. The obtained results show that DFT-s-OFDM allows improving the downlink coverage by up to 20%, with largest gains available for low modulation orders. The results also show that truly saving energy for a given throughput requirement is more difficult - yet possible, assuming that the PA bias and supply voltages can be properly controlled during the downlink transmission.

Original language	English
Title of host publication	2024 Joint European Conference on Networks and Communications and 6G Summit, EuCNC/6G Summit 2024
Publisher	IEEE
Pages	475-480
Number of pages	6
ISBN (Electronic)	9798350344998
ISBN (Print)	9798350345001
DOIs	https://doi.org/10.1109/EuCNC/6GSummit60053.2024.10597123
Publication status	Published - 2024
Publication type	A4 Article in conference proceedings
Event	Joint European Conference on Networks and Communications and 6G Summit - Antwerp, Belgium Duration: 3 Jun 2024 → 6 Jun 2024

Publication series

Name	European Conference on Networks and Communications
ISSN (Print)	2475-6490
ISSN (Electronic)	2575-4912

Conference

Conference	Joint European Conference on Networks and Communications and 6G Summit
Country/Territory	Belgium
City	Antwerp
Period	3/06/24 → 6/06/24

Publication forum classification

Publication forum level 1

ASJC Scopus subject areas

Artificial Intelligence
Computer Networks and Communications
Modelling and Simulation
Instrumentation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/EuCNC/6GSummit60053.2024.10597123

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Cite this

Anttila, L., Toivonen, V., Tervo, O., Tiirola, E., Hooli, K., Talvitie, J., & Valkama, M. (2024). Feasibility of DFT-s-OFDM in 6G Downlink: Coverage and Energy-Efficiency Assessment. In 2024 Joint European Conference on Networks and Communications and 6G Summit, EuCNC/6G Summit 2024 (pp. 475-480). (European Conference on Networks and Communications). IEEE. https://doi.org/10.1109/EuCNC/6GSummit60053.2024.10597123

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title = "Feasibility of DFT-s-OFDM in 6G Downlink: Coverage and Energy-Efficiency Assessment",

abstract = "The future 6G mobile communication systems are expected not only to improve the broadband connectivity and other services but also enhance the network coverage, energy-efficiency and sustainability. In this paper, we address the coverage and energy-efficiency challenges, and study the feasibility of discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) as the potential downlink physical-layer radio access waveform. Building on the prevailing 5G New Radio (NR) downlink transmit signal quality requirements and behavior of contemporary power amplifier (PA) systems, we assess and show the available downlink coverage gain and energy saving potential, compared to ordinary cyclic prefix (CP) OFDM. The obtained results show that DFT-s-OFDM allows improving the downlink coverage by up to 20%, with largest gains available for low modulation orders. The results also show that truly saving energy for a given throughput requirement is more difficult - yet possible, assuming that the PA bias and supply voltages can be properly controlled during the downlink transmission.",

author = "Lauri Anttila and Vili Toivonen and Oskari Tervo and Esa Tiirola and Kari Hooli and Jukka Talvitie and Mikko Valkama",

note = "Publisher Copyright: {\textcopyright} 2024 IEEE.; Joint European Conference on Networks and Communications and 6G Summit ; Conference date: 03-06-2024 Through 06-06-2024",

year = "2024",

doi = "10.1109/EuCNC/6GSummit60053.2024.10597123",

language = "English",

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Anttila, L , Toivonen, V, Tervo, O, Tiirola, E, Hooli, K, Talvitie, J & Valkama, M 2024, Feasibility of DFT-s-OFDM in 6G Downlink: Coverage and Energy-Efficiency Assessment. in 2024 Joint European Conference on Networks and Communications and 6G Summit, EuCNC/6G Summit 2024. European Conference on Networks and Communications, IEEE, pp. 475-480, Joint European Conference on Networks and Communications and 6G Summit, Antwerp, Belgium, 3/06/24. https://doi.org/10.1109/EuCNC/6GSummit60053.2024.10597123

Feasibility of DFT-s-OFDM in 6G Downlink: Coverage and Energy-Efficiency Assessment. / Anttila, Lauri ; Toivonen, Vili; Tervo, Oskari et al.
2024 Joint European Conference on Networks and Communications and 6G Summit, EuCNC/6G Summit 2024. IEEE, 2024. p. 475-480 (European Conference on Networks and Communications).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

TY - GEN

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T2 - Joint European Conference on Networks and Communications and 6G Summit

AU - Anttila, Lauri

AU - Toivonen, Vili

AU - Tervo, Oskari

AU - Tiirola, Esa

AU - Hooli, Kari

AU - Talvitie, Jukka

AU - Valkama, Mikko

PY - 2024

Y1 - 2024

N2 - The future 6G mobile communication systems are expected not only to improve the broadband connectivity and other services but also enhance the network coverage, energy-efficiency and sustainability. In this paper, we address the coverage and energy-efficiency challenges, and study the feasibility of discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) as the potential downlink physical-layer radio access waveform. Building on the prevailing 5G New Radio (NR) downlink transmit signal quality requirements and behavior of contemporary power amplifier (PA) systems, we assess and show the available downlink coverage gain and energy saving potential, compared to ordinary cyclic prefix (CP) OFDM. The obtained results show that DFT-s-OFDM allows improving the downlink coverage by up to 20%, with largest gains available for low modulation orders. The results also show that truly saving energy for a given throughput requirement is more difficult - yet possible, assuming that the PA bias and supply voltages can be properly controlled during the downlink transmission.

AB - The future 6G mobile communication systems are expected not only to improve the broadband connectivity and other services but also enhance the network coverage, energy-efficiency and sustainability. In this paper, we address the coverage and energy-efficiency challenges, and study the feasibility of discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) as the potential downlink physical-layer radio access waveform. Building on the prevailing 5G New Radio (NR) downlink transmit signal quality requirements and behavior of contemporary power amplifier (PA) systems, we assess and show the available downlink coverage gain and energy saving potential, compared to ordinary cyclic prefix (CP) OFDM. The obtained results show that DFT-s-OFDM allows improving the downlink coverage by up to 20%, with largest gains available for low modulation orders. The results also show that truly saving energy for a given throughput requirement is more difficult - yet possible, assuming that the PA bias and supply voltages can be properly controlled during the downlink transmission.

U2 - 10.1109/EuCNC/6GSummit60053.2024.10597123

DO - 10.1109/EuCNC/6GSummit60053.2024.10597123

M3 - Conference contribution

AN - SCOPUS:85199913172

SN - 9798350345001

T3 - European Conference on Networks and Communications

SP - 475

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BT - 2024 Joint European Conference on Networks and Communications and 6G Summit, EuCNC/6G Summit 2024

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Y2 - 3 June 2024 through 6 June 2024

ER -

Anttila L , Toivonen V, Tervo O, Tiirola E, Hooli K, Talvitie J et al. Feasibility of DFT-s-OFDM in 6G Downlink: Coverage and Energy-Efficiency Assessment. In 2024 Joint European Conference on Networks and Communications and 6G Summit, EuCNC/6G Summit 2024. IEEE. 2024. p. 475-480. (European Conference on Networks and Communications). doi: 10.1109/EuCNC/6GSummit60053.2024.10597123

Feasibility of DFT-s-OFDM in 6G Downlink: Coverage and Energy-Efficiency Assessment

Abstract

Publication series

Conference

Publication forum classification

ASJC Scopus subject areas

UN SDGs

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