Low-Complexity AFDM Signal Detection for High-Mobility and LEO Satellite Communications

Can Zheng; Chung G. Kang

doi:10.1109/CCNC65079.2026.11366569

Low-Complexity AFDM Signal Detection for High-Mobility and LEO Satellite Communications

Can Zheng^*
, Chung G. Kang

^*Corresponding author for this work

School of Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

High-mobility and LEO satellite channels cause severe Doppler dispersion that degrades OFDM performance. Affine frequency division multiplexing (AFDM) mitigates this effect with an efficient chirp-based design. To further lower receiver complexity, this paper introduces a variational Bayesian (VB) detector using mean-field factorization and coordinate-ascent updates, eliminating matrix inversion. The proposed method achieves fast, low-complexity soft detection with superior BER for next-generation LEO systems.

Original language	English
Title of host publication	2026 IEEE 23rd Consumer Communications and Networking Conference, CCNC 2026
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9798331596736
DOIs	https://doi.org/10.1109/CCNC65079.2026.11366569
Publication status	Published - 2026
Event	23rd IEEE Consumer Communications and Networking Conference, CCNC 2026 - Las Vegas, United States Duration: 2026 Jan 9 → 2026 Jan 12

Publication series

Name	Proceedings - IEEE Consumer Communications and Networking Conference, CCNC
ISSN (Print)	2331-9860

Conference

Conference	23rd IEEE Consumer Communications and Networking Conference, CCNC 2026
Country/Territory	United States
City	Las Vegas
Period	26/1/9 → 26/1/12

Bibliographical note

Publisher Copyright:
© 2026 IEEE.

Keywords

AFDM
high mobility
low complexity
variational inference
VB detection

ASJC Scopus subject areas

Computer Vision and Pattern Recognition
Computer Networks and Communications
Artificial Intelligence
Electrical and Electronic Engineering

Access to Document

10.1109/CCNC65079.2026.11366569

Cite this

Zheng, C., & Kang, C. G. (2026). Low-Complexity AFDM Signal Detection for High-Mobility and LEO Satellite Communications. In 2026 IEEE 23rd Consumer Communications and Networking Conference, CCNC 2026 (Proceedings - IEEE Consumer Communications and Networking Conference, CCNC). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CCNC65079.2026.11366569

Low-Complexity AFDM Signal Detection for High-Mobility and LEO Satellite Communications. / Zheng, Can; Kang, Chung G.
2026 IEEE 23rd Consumer Communications and Networking Conference, CCNC 2026. Institute of Electrical and Electronics Engineers Inc., 2026. (Proceedings - IEEE Consumer Communications and Networking Conference, CCNC).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Zheng, C & Kang, CG 2026, Low-Complexity AFDM Signal Detection for High-Mobility and LEO Satellite Communications. in 2026 IEEE 23rd Consumer Communications and Networking Conference, CCNC 2026. Proceedings - IEEE Consumer Communications and Networking Conference, CCNC, Institute of Electrical and Electronics Engineers Inc., 23rd IEEE Consumer Communications and Networking Conference, CCNC 2026, Las Vegas, United States, 26/1/9. https://doi.org/10.1109/CCNC65079.2026.11366569

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AB - High-mobility and LEO satellite channels cause severe Doppler dispersion that degrades OFDM performance. Affine frequency division multiplexing (AFDM) mitigates this effect with an efficient chirp-based design. To further lower receiver complexity, this paper introduces a variational Bayesian (VB) detector using mean-field factorization and coordinate-ascent updates, eliminating matrix inversion. The proposed method achieves fast, low-complexity soft detection with superior BER for next-generation LEO systems.

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PB - Institute of Electrical and Electronics Engineers Inc.

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ER -

Low-Complexity AFDM Signal Detection for High-Mobility and LEO Satellite Communications

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this