TY - GEN
T1 - A Novel GAMP-Based Receiver for Nonlinearly Distorded Precoded OFDM Signals
AU - Parmentier, Hugo
AU - Lehmann, Frédéric
AU - Berthet, Antoine O.
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025/1/1
Y1 - 2025/1/1
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
UR - https://www.scopus.com/pages/publications/105019052891
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 -