Fast GAMP Algorithm for Nonlinearly Distorted OFDM Signals

Chaosan Yang; Xiaobei Liu; Yong Liang Guan; Rongke Liu

doi:10.1109/LCOMM.2021.3056657

Fast GAMP Algorithm for Nonlinearly Distorted OFDM Signals

Chaosan Yang, Xiaobei Liu, Yong Liang Guan, Rongke Liu^*

^*Corresponding author for this work

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

16 Citations (Scopus)

Abstract

In this letter, the design of a low-complexity receiver which is robust to orthogonal frequency division multiplex (OFDM) signals with nonlinear clipping distortion is investigated. An approximation of the probability density function (PDF) of the received signals with nonlinear distortion is derived. Based on iteration-dependent approximation of the mean and variance of the clipped signal, a fast generalized approximate message passing (F-GAMP) algorithm is proposed. The proposed F-GAMP achieves bit error rate (BER) performance gain over the conventional OFDM receiver due to the F-GAMP's ability to recover inter-carrier interference (ICI) and exploit frequency diversity induced by the spectral growth of a clipped signal.

Original language	English
Article number	9345729
Pages (from-to)	1682-1686
Number of pages	5
Journal	IEEE Communications Letters
Volume	25
Issue number	5
DOIs	https://doi.org/10.1109/LCOMM.2021.3056657
Publication status	Published - May 2021
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 1997-2012 IEEE.

ASJC Scopus Subject Areas

Modelling and Simulation
Computer Science Applications
Electrical and Electronic Engineering

Keywords

generalized approximate message passing
Orthogonal frequency division multiplex (OFDM)
peak-to-average power ratio (PAPR)

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10.1109/LCOMM.2021.3056657

Cite this

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title = "Fast GAMP Algorithm for Nonlinearly Distorted OFDM Signals",

abstract = "In this letter, the design of a low-complexity receiver which is robust to orthogonal frequency division multiplex (OFDM) signals with nonlinear clipping distortion is investigated. An approximation of the probability density function (PDF) of the received signals with nonlinear distortion is derived. Based on iteration-dependent approximation of the mean and variance of the clipped signal, a fast generalized approximate message passing (F-GAMP) algorithm is proposed. The proposed F-GAMP achieves bit error rate (BER) performance gain over the conventional OFDM receiver due to the F-GAMP's ability to recover inter-carrier interference (ICI) and exploit frequency diversity induced by the spectral growth of a clipped signal.",

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AU - Yang, Chaosan

AU - Liu, Xiaobei

AU - Guan, Yong Liang

AU - Liu, Rongke

PY - 2021/5

Y1 - 2021/5

N2 - In this letter, the design of a low-complexity receiver which is robust to orthogonal frequency division multiplex (OFDM) signals with nonlinear clipping distortion is investigated. An approximation of the probability density function (PDF) of the received signals with nonlinear distortion is derived. Based on iteration-dependent approximation of the mean and variance of the clipped signal, a fast generalized approximate message passing (F-GAMP) algorithm is proposed. The proposed F-GAMP achieves bit error rate (BER) performance gain over the conventional OFDM receiver due to the F-GAMP's ability to recover inter-carrier interference (ICI) and exploit frequency diversity induced by the spectral growth of a clipped signal.

AB - In this letter, the design of a low-complexity receiver which is robust to orthogonal frequency division multiplex (OFDM) signals with nonlinear clipping distortion is investigated. An approximation of the probability density function (PDF) of the received signals with nonlinear distortion is derived. Based on iteration-dependent approximation of the mean and variance of the clipped signal, a fast generalized approximate message passing (F-GAMP) algorithm is proposed. The proposed F-GAMP achieves bit error rate (BER) performance gain over the conventional OFDM receiver due to the F-GAMP's ability to recover inter-carrier interference (ICI) and exploit frequency diversity induced by the spectral growth of a clipped signal.

KW - generalized approximate message passing

KW - Orthogonal frequency division multiplex (OFDM)

KW - peak-to-average power ratio (PAPR)

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Fast GAMP Algorithm for Nonlinearly Distorted OFDM Signals

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

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