LDPC assisted GAMP for PAPR reduction in Super-QAM OFDM

João Madeira; Zahra Mokhtari; João Guerreiro; Rui Dinis

doi:10.1109/ICFSP59764.2023.10372912

LDPC assisted GAMP for PAPR reduction in Super-QAM OFDM

João Madeira, Zahra Mokhtari, João Guerreiro, Rui Dinis

DEE - Departamento de Engenharia Electrotécnica e de Computadores

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

Abstract

The procurement of higher data rates has motivated significant research into supporting very high order M-ary Quadrature Amplitude Modulation (M-QAM), also known as Super-QAM, combined with Orthogonal Frequency Division Multiplexing (OFDM). Unmitigated, the high Peak-to-Average Power Ratio (PAPR) of OFDM signals results in very low amplification efficiency. However, schemes that improve efficiency can introduce distortion in the transmitted signal, which is particularly challenging for Super-QAM schemes. We propose a simple PAPR reduction operation at the transmitter, which is combined with a Generalized Approximate Message Passing (GAMP) receiver, which is known to cope with nonlinear distortion. It is shown that GAMP's convergence can be greatly improved by incorporating a Low Density Parity Check (LDPC) code within the GAMP detection algorithm, which allows for significantly low PAPR values.

Original language	English
Title of host publication	ICFSP 2023
Subtitle of host publication	2023 8th International Conference on Frontiers of Signal Processing
Place of Publication	Massachusetts
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	1-4
Number of pages	4
ISBN (Electronic)	979-8-3503-0879-2
ISBN (Print)	979-8-3503-0880-8
DOIs	https://doi.org/10.1109/ICFSP59764.2023.10372912
Publication status	Published - 2023
Event	8th International Conference on Frontiers of Signal Processing, ICFSP 2023 - Hybrid, Corfu, Greece Duration: 23 Oct 2023 → 25 Oct 2023

Conference

Conference	8th International Conference on Frontiers of Signal Processing, ICFSP 2023
Country/Territory	Greece
City	Hybrid, Corfu
Period	23/10/23 → 25/10/23

Keywords

GAMP
LDPC
OFDM
PAPR
Super-QAM

Access to Document

10.1109/ICFSP59764.2023.10372912

Cite this

@inproceedings{678c9d79692b41139293ebd51e33a8e7,

title = "LDPC assisted GAMP for PAPR reduction in Super-QAM OFDM",

abstract = "The procurement of higher data rates has motivated significant research into supporting very high order M-ary Quadrature Amplitude Modulation (M-QAM), also known as Super-QAM, combined with Orthogonal Frequency Division Multiplexing (OFDM). Unmitigated, the high Peak-to-Average Power Ratio (PAPR) of OFDM signals results in very low amplification efficiency. However, schemes that improve efficiency can introduce distortion in the transmitted signal, which is particularly challenging for Super-QAM schemes. We propose a simple PAPR reduction operation at the transmitter, which is combined with a Generalized Approximate Message Passing (GAMP) receiver, which is known to cope with nonlinear distortion. It is shown that GAMP's convergence can be greatly improved by incorporating a Low Density Parity Check (LDPC) code within the GAMP detection algorithm, which allows for significantly low PAPR values.",

keywords = "GAMP, LDPC, OFDM, PAPR, Super-QAM",

author = "Jo{\~a}o Madeira and Zahra Mokhtari and Jo{\~a}o Guerreiro and Rui Dinis",

note = "Funding Information: ACKNOWLEDGMENT This work partially supported by Lund Research Center, Huawei Technologies Sweden AB, Sweden and FCT -Funda{\c c}{\~a}o para a Ci{\^e}ncia e Tecnologia and Instituto de Telecomunica{\c c}{\~o}es under a PhD Grant (UI/BD/150877/2021) and project UIDB/50008/2020. Publisher Copyright: {\textcopyright} 2023 IEEE.; 8th International Conference on Frontiers of Signal Processing, ICFSP 2023 ; Conference date: 23-10-2023 Through 25-10-2023",

year = "2023",

doi = "10.1109/ICFSP59764.2023.10372912",

language = "English",

isbn = "979-8-3503-0880-8",

pages = "1--4",

booktitle = "ICFSP 2023",

publisher = "Institute of Electrical and Electronics Engineers (IEEE)",

address = "United States",

}

Madeira, J, Mokhtari, Z, Guerreiro, J & Dinis, R 2023, LDPC assisted GAMP for PAPR reduction in Super-QAM OFDM. in ICFSP 2023: 2023 8th International Conference on Frontiers of Signal Processing. Institute of Electrical and Electronics Engineers (IEEE), Massachusetts, pp. 1-4, 8th International Conference on Frontiers of Signal Processing, ICFSP 2023, Hybrid, Corfu, Greece, 23/10/23. https://doi.org/10.1109/ICFSP59764.2023.10372912

LDPC assisted GAMP for PAPR reduction in Super-QAM OFDM. / Madeira, João; Mokhtari, Zahra; Guerreiro, João et al.
ICFSP 2023: 2023 8th International Conference on Frontiers of Signal Processing. Massachusetts: Institute of Electrical and Electronics Engineers (IEEE), 2023. p. 1-4.

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

TY - GEN

T1 - LDPC assisted GAMP for PAPR reduction in Super-QAM OFDM

AU - Madeira, João

AU - Mokhtari, Zahra

AU - Guerreiro, João

AU - Dinis, Rui

N1 - Funding Information: ACKNOWLEDGMENT This work partially supported by Lund Research Center, Huawei Technologies Sweden AB, Sweden and FCT -Fundação para a Ciência e Tecnologia and Instituto de Telecomunicações under a PhD Grant (UI/BD/150877/2021) and project UIDB/50008/2020. Publisher Copyright: © 2023 IEEE.

PY - 2023

Y1 - 2023

N2 - The procurement of higher data rates has motivated significant research into supporting very high order M-ary Quadrature Amplitude Modulation (M-QAM), also known as Super-QAM, combined with Orthogonal Frequency Division Multiplexing (OFDM). Unmitigated, the high Peak-to-Average Power Ratio (PAPR) of OFDM signals results in very low amplification efficiency. However, schemes that improve efficiency can introduce distortion in the transmitted signal, which is particularly challenging for Super-QAM schemes. We propose a simple PAPR reduction operation at the transmitter, which is combined with a Generalized Approximate Message Passing (GAMP) receiver, which is known to cope with nonlinear distortion. It is shown that GAMP's convergence can be greatly improved by incorporating a Low Density Parity Check (LDPC) code within the GAMP detection algorithm, which allows for significantly low PAPR values.

AB - The procurement of higher data rates has motivated significant research into supporting very high order M-ary Quadrature Amplitude Modulation (M-QAM), also known as Super-QAM, combined with Orthogonal Frequency Division Multiplexing (OFDM). Unmitigated, the high Peak-to-Average Power Ratio (PAPR) of OFDM signals results in very low amplification efficiency. However, schemes that improve efficiency can introduce distortion in the transmitted signal, which is particularly challenging for Super-QAM schemes. We propose a simple PAPR reduction operation at the transmitter, which is combined with a Generalized Approximate Message Passing (GAMP) receiver, which is known to cope with nonlinear distortion. It is shown that GAMP's convergence can be greatly improved by incorporating a Low Density Parity Check (LDPC) code within the GAMP detection algorithm, which allows for significantly low PAPR values.

KW - GAMP

KW - LDPC

KW - OFDM

KW - PAPR

KW - Super-QAM

UR - http://www.scopus.com/inward/record.url?scp=85183461642&partnerID=8YFLogxK

U2 - 10.1109/ICFSP59764.2023.10372912

DO - 10.1109/ICFSP59764.2023.10372912

M3 - Conference contribution

AN - SCOPUS:85183461642

SN - 979-8-3503-0880-8

SP - 1

EP - 4

BT - ICFSP 2023

PB - Institute of Electrical and Electronics Engineers (IEEE)

CY - Massachusetts

T2 - 8th International Conference on Frontiers of Signal Processing, ICFSP 2023

Y2 - 23 October 2023 through 25 October 2023

ER -

LDPC assisted GAMP for PAPR reduction in Super-QAM OFDM

Abstract

Conference

Keywords

Access to Document

Other files and links

Fingerprint

Cite this