A Novel GAMP-Based Receiver for Nonlinearly Distorded Precoded OFDM Signals

Hugo Parmentier; Frédéric Lehmann; Antoine O. Berthet

doi:10.1109/VTC2025-Spring65109.2025.11174777

A Novel GAMP-Based Receiver for Nonlinearly Distorded Precoded OFDM Signals

Hugo Parmentier
, Frédéric Lehmann
, Antoine O. Berthet

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

Abstract

We address the post-compensation of nonlinear distortion in precoded orthogonal frequency division multiplexing signals caused by power amplifier impairments. An iterative message-passing receiver is proposed, using generalized approximate message passing to perform OFDM demodulation and nonlinearity compensation, while deriving new messages towards the equalizer to establish a turbo-equalization scheme. Additionally, the complex integral required for GAMP is simplified, reducing it to a one-dimensional integral that can be computed numerically. The proposed receiver significantly outperforms previous GAMPbased distortion compensation techniques.

Original language	English
Title of host publication	2025 IEEE 101st Vehicular Technology Conference, VTC 2025-Spring 2025 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9798331531478
DOIs	https://doi.org/10.1109/VTC2025-Spring65109.2025.11174777
Publication status	Published - 1 Jan 2025
Event	101st IEEE Vehicular Technology Conference, VTC 2025-Spring 2025 - Oslo, Norway Duration: 17 Jun 2025 → 20 Jun 2025

Publication series

Name	IEEE Vehicular Technology Conference
ISSN (Print)	1550-2252

Conference

Conference	101st IEEE Vehicular Technology Conference, VTC 2025-Spring 2025
Country/Territory	Norway
City	Oslo
Period	17/06/25 → 20/06/25

Keywords

OFDM
belief propagation
factor graphs
generalized approximate message passing
iterative (turbo) equalization
message-passing algorithm
nonlin-ear distortion
nonlinear power amplifier

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10.1109/VTC2025-Spring65109.2025.11174777

Cite this

Parmentier, H., Lehmann, F., & Berthet, A. O. (2025). A Novel GAMP-Based Receiver for Nonlinearly Distorded Precoded OFDM Signals. In 2025 IEEE 101st Vehicular Technology Conference, VTC 2025-Spring 2025 - Proceedings (IEEE Vehicular Technology Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VTC2025-Spring65109.2025.11174777

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title = "A Novel GAMP-Based Receiver for Nonlinearly Distorded Precoded OFDM Signals",

abstract = "We address the post-compensation of nonlinear distortion in precoded orthogonal frequency division multiplexing signals caused by power amplifier impairments. An iterative message-passing receiver is proposed, using generalized approximate message passing to perform OFDM demodulation and nonlinearity compensation, while deriving new messages towards the equalizer to establish a turbo-equalization scheme. Additionally, the complex integral required for GAMP is simplified, reducing it to a one-dimensional integral that can be computed numerically. The proposed receiver significantly outperforms previous GAMPbased distortion compensation techniques.",

keywords = "OFDM, belief propagation, factor graphs, generalized approximate message passing, iterative (turbo) equalization, message-passing algorithm, nonlin-ear distortion, nonlinear power amplifier",

author = "Hugo Parmentier and Fr{\'e}d{\'e}ric Lehmann and Berthet, \{Antoine O.\}",

note = "Publisher Copyright: {\textcopyright} 2025 IEEE.; 101st IEEE Vehicular Technology Conference, VTC 2025-Spring 2025 ; Conference date: 17-06-2025 Through 20-06-2025",

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Parmentier, H, Lehmann, F & Berthet, AO 2025, A Novel GAMP-Based Receiver for Nonlinearly Distorded Precoded OFDM Signals. in 2025 IEEE 101st Vehicular Technology Conference, VTC 2025-Spring 2025 - Proceedings. IEEE Vehicular Technology Conference, Institute of Electrical and Electronics Engineers Inc., 101st IEEE Vehicular Technology Conference, VTC 2025-Spring 2025, Oslo, Norway, 17/06/25. https://doi.org/10.1109/VTC2025-Spring65109.2025.11174777

A Novel GAMP-Based Receiver for Nonlinearly Distorded Precoded OFDM Signals. / Parmentier, Hugo; Lehmann, Frédéric; Berthet, Antoine O.
2025 IEEE 101st Vehicular Technology Conference, VTC 2025-Spring 2025 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2025. (IEEE Vehicular Technology Conference).

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

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N2 - We address the post-compensation of nonlinear distortion in precoded orthogonal frequency division multiplexing signals caused by power amplifier impairments. An iterative message-passing receiver is proposed, using generalized approximate message passing to perform OFDM demodulation and nonlinearity compensation, while deriving new messages towards the equalizer to establish a turbo-equalization scheme. Additionally, the complex integral required for GAMP is simplified, reducing it to a one-dimensional integral that can be computed numerically. The proposed receiver significantly outperforms previous GAMPbased distortion compensation techniques.

AB - We address the post-compensation of nonlinear distortion in precoded orthogonal frequency division multiplexing signals caused by power amplifier impairments. An iterative message-passing receiver is proposed, using generalized approximate message passing to perform OFDM demodulation and nonlinearity compensation, while deriving new messages towards the equalizer to establish a turbo-equalization scheme. Additionally, the complex integral required for GAMP is simplified, reducing it to a one-dimensional integral that can be computed numerically. The proposed receiver significantly outperforms previous GAMPbased distortion compensation techniques.

KW - OFDM

KW - belief propagation

KW - factor graphs

KW - generalized approximate message passing

KW - iterative (turbo) equalization

KW - message-passing algorithm

KW - nonlin-ear distortion

KW - nonlinear power amplifier

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U2 - 10.1109/VTC2025-Spring65109.2025.11174777

DO - 10.1109/VTC2025-Spring65109.2025.11174777

M3 - Conference contribution

AN - SCOPUS:105019052891

T3 - IEEE Vehicular Technology Conference

BT - 2025 IEEE 101st Vehicular Technology Conference, VTC 2025-Spring 2025 - Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 101st IEEE Vehicular Technology Conference, VTC 2025-Spring 2025

Y2 - 17 June 2025 through 20 June 2025

ER -

A Novel GAMP-Based Receiver for Nonlinearly Distorded Precoded OFDM Signals

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