A Novel GAMP-Based Receiver for Nonlinearly Distorded Precoded OFDM Signals
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.
Authors
- Frédéric Lehmann (ORCID: https://orcid.org/0000-0002-6409-1904)
- Antoine O. Berthet (ORCID: https://orcid.org/0000-0002-0524-6814)
- Hugo Parmentier
Institutions
- Centre National de la Recherche Scientifique (FR)
- CentraleSupélec (FR)
Publication Details
- Published
- 2025-06-17
- DOI
- https://doi.org/10.1109/vtc2025-spring65109.2025.11174777
- Primary Topic
- PAPR reduction in OFDM
- Type
- article
- Field-Weighted Citation Impact
- 0.00