Multi-Antenna Joint Transmission Scheme for AFDM-Based Mosaic Communication System

Yuliang Song; Ming Li; Zhiyang Li; Suiyao Zhu; Lin Mei

doi:10.1109/LCOMM.2026.3702165

Multi-Antenna Joint Transmission Scheme for AFDM-Based Mosaic Communication System

Yuliang Song
, Ming Li
, Zhiyang Li
, Suiyao Zhu
, Lin Mei^*

^*Corresponding author for this work

School of Electronics and Information Engineering, Harbin Institute of Technology
Shanghai Aerospace Electronic Technology Institute
Shanghai Key Laboratory of Collaborative Computing in Spacial Heterogenous Networks (CCSN)
Peng Cheng Laboratory

Research output: Contribution to journal › Article › peer-review

Abstract

In this letter, we investigate a multi-antenna joint transmission scheme based on affine frequency division multiplexing (AFDM) in the mosaic communication system. Considering the presence of time synchronization errors among different antennas, we propose a non-coherent joint transmission AFDM (NCJT-AFDM) system to improve the reliability of multi-antenna transmission systems. Since multi-antenna transmissions introduce distinct delay-Doppler spreads, which are coupled with the fractional-Doppler-induced interference inherent in AFDM, we develop an embedded single-pilot-aided approximate maximum likelihood successive interference cancellation (ESPA-AML-SIC) method. This method mitigates the adverse impact of insufficient spacing coefficient kv on channel estimation. Simulation results validate the effectiveness of the proposed scheme.

Original language	English
Pages (from-to)	2253-2257
Number of pages	5
Journal	IEEE Communications Letters
Volume	30
DOIs	https://doi.org/10.1109/LCOMM.2026.3702165
State	Published - 2026
Externally published	Yes

Keywords

Multi-antenna joint transmission
NCJT-AFDM
channel estimation
time synchronization error

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10.1109/LCOMM.2026.3702165

Cite this

@article{e851375475744cfeb37399fd749a67ba,

title = "Multi-Antenna Joint Transmission Scheme for AFDM-Based Mosaic Communication System",

abstract = "In this letter, we investigate a multi-antenna joint transmission scheme based on affine frequency division multiplexing (AFDM) in the mosaic communication system. Considering the presence of time synchronization errors among different antennas, we propose a non-coherent joint transmission AFDM (NCJT-AFDM) system to improve the reliability of multi-antenna transmission systems. Since multi-antenna transmissions introduce distinct delay-Doppler spreads, which are coupled with the fractional-Doppler-induced interference inherent in AFDM, we develop an embedded single-pilot-aided approximate maximum likelihood successive interference cancellation (ESPA-AML-SIC) method. This method mitigates the adverse impact of insufficient spacing coefficient kv on channel estimation. Simulation results validate the effectiveness of the proposed scheme.",

keywords = "Multi-antenna joint transmission, NCJT-AFDM, channel estimation, time synchronization error",

author = "Yuliang Song and Ming Li and Zhiyang Li and Suiyao Zhu and Lin Mei",

note = "Publisher Copyright: {\textcopyright} 1997-2012 IEEE.",

year = "2026",

doi = "10.1109/LCOMM.2026.3702165",

language = "英语",

volume = "30",

pages = "2253--2257",

journal = "IEEE Communications Letters",

issn = "1089-7798",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

}

TY - JOUR

T1 - Multi-Antenna Joint Transmission Scheme for AFDM-Based Mosaic Communication System

AU - Song, Yuliang

AU - Li, Ming

AU - Li, Zhiyang

AU - Zhu, Suiyao

AU - Mei, Lin

PY - 2026

Y1 - 2026

N2 - In this letter, we investigate a multi-antenna joint transmission scheme based on affine frequency division multiplexing (AFDM) in the mosaic communication system. Considering the presence of time synchronization errors among different antennas, we propose a non-coherent joint transmission AFDM (NCJT-AFDM) system to improve the reliability of multi-antenna transmission systems. Since multi-antenna transmissions introduce distinct delay-Doppler spreads, which are coupled with the fractional-Doppler-induced interference inherent in AFDM, we develop an embedded single-pilot-aided approximate maximum likelihood successive interference cancellation (ESPA-AML-SIC) method. This method mitigates the adverse impact of insufficient spacing coefficient kv on channel estimation. Simulation results validate the effectiveness of the proposed scheme.

AB - In this letter, we investigate a multi-antenna joint transmission scheme based on affine frequency division multiplexing (AFDM) in the mosaic communication system. Considering the presence of time synchronization errors among different antennas, we propose a non-coherent joint transmission AFDM (NCJT-AFDM) system to improve the reliability of multi-antenna transmission systems. Since multi-antenna transmissions introduce distinct delay-Doppler spreads, which are coupled with the fractional-Doppler-induced interference inherent in AFDM, we develop an embedded single-pilot-aided approximate maximum likelihood successive interference cancellation (ESPA-AML-SIC) method. This method mitigates the adverse impact of insufficient spacing coefficient kv on channel estimation. Simulation results validate the effectiveness of the proposed scheme.

KW - Multi-antenna joint transmission

KW - NCJT-AFDM

KW - channel estimation

KW - time synchronization error

UR - https://www.scopus.com/pages/publications/105041508096

U2 - 10.1109/LCOMM.2026.3702165

DO - 10.1109/LCOMM.2026.3702165

M3 - 文章

AN - SCOPUS:105041508096

SN - 1089-7798

VL - 30

SP - 2253

EP - 2257

JO - IEEE Communications Letters

JF - IEEE Communications Letters

ER -

Multi-Antenna Joint Transmission Scheme for AFDM-Based Mosaic Communication System

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Keywords

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