| 講演抄録/キーワード |
| 講演名 |
2025-11-14 15:25
Candidate waveform for 6G Satellite Communications: Affine Frequency Division Multiplexing (AFDM) ○Hee Wook Kim・Ryu Joon Gyu(ETRI)・Qu Luo(UoS) SANE2025-77 |
| 抄録 |
(和) |
This paper investigates Affine Frequency Division Multiplexing (AFDM) as a potential additional waveform candidate for 6G radio, based on the 3GPP RAN1 Study Item on 6G Radio (6GR). AFDM utilizes the Discrete Affine Fourier Transform (DAFT) to diagonalize doubly dispersive channels in the delay–Doppler domain, providing inherent robustness under high mobility and non-terrestrial network (NTN) conditions. Simulation analyses indicate that AFDM offers up to 1.5 dB block error rate (BLER) gain under strong Doppler spreads compared to conventional CP-OFDM. The waveform’s chirp-based structure also enables native compatibility with integrated sensing and communication (ISAC), allowing radar-like sensing without additional resource overhead. Furthermore, AFDM can be integrated into the 3GPP NR architecture through minor modifications to existing FFT/IFFT-based hardware. These results demonstrate that AFDM represents an OFDM-extensible waveform candidate suitable for addressing key 6G requirements including robustness, efficiency, and ISAC integration. |
| (英) |
This paper investigates Affine Frequency Division Multiplexing (AFDM) as a potential additional waveform candidate for 6G radio, based on the 3GPP RAN1 Study Item on 6G Radio (6GR). AFDM utilizes the Discrete Affine Fourier Transform (DAFT) to diagonalize doubly dispersive channels in the delay–Doppler domain, providing inherent robustness under high mobility and non-terrestrial network (NTN) conditions. Simulation analyses indicate that AFDM offers up to 1.5 dB block error rate (BLER) gain under strong Doppler spreads compared to conventional CP-OFDM. The waveform’s chirp-based structure also enables native compatibility with integrated sensing and communication (ISAC), allowing radar-like sensing without additional resource overhead. Furthermore, AFDM can be integrated into the 3GPP NR architecture through minor modifications to existing FFT/IFFT-based hardware. These results demonstrate that AFDM represents an OFDM-extensible waveform candidate suitable for addressing key 6G requirements including robustness, efficiency, and ISAC integration. |
| キーワード |
(和) |
AFDM / CP-OFDM / DAFT / NR / NTN / ISAC / / |
| (英) |
AFDM / CP-OFDM / DAFT / NR / NTN / ISAC / / |
| 文献情報 |
信学技報, vol. 125, no. 245, SANE2025-77, pp. 119-123, 2025年11月. |
| 資料番号 |
SANE2025-77 |
| 発行日 |
2025-11-06 (SANE) |
| ISSN |
Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
| PDFダウンロード |
SANE2025-77 |