A Novel PAPR Reduction Scheme for Polar-Coded OFDM Systems

A novel joint channel coding and peak-to-average power ratio (PAPR) reduction technique for polar-coded orthogonal frequency-division multiplexing (OFDM) systems is proposed. The main concept is to introduce shaping indices to polar encoder, and generate multiple OFDM symbol candidates according to...

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Bibliographic Details
Published in:IEEE communications letters 2019-12, Vol.23 (12), p.2372-2375
Main Authors: Matsumine, Toshiki, Ochiai, Hideki
Format: Article
Language:English
Subjects:
Algorithms
Coders
Codes
Decoding
Error analysis
Measurement
Orthogonal Frequency Division Multiplexing
orthogonal frequency-division multiplexing (OFDM)
Peak to average power ratio
peak-to-average power ratio (PAPR)
Polar codes
Receivers
Reduction
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Summary:A novel joint channel coding and peak-to-average power ratio (PAPR) reduction technique for polar-coded orthogonal frequency-division multiplexing (OFDM) systems is proposed. The main concept is to introduce shaping indices to polar encoder, and generate multiple OFDM symbol candidates according to various shaping bit patterns and then select the one with the lowest PAPR as a transmitted signal. Since information and shaping bits can be jointly decoded using the conventional decoding algorithm of polar codes, transmission of side information is not required. The polar code design algorithm for efficient PAPR reduction is also discussed. It is demonstrated that the proposed shaping method offers a gain of more than 4.5dB in terms of PAPR performance without affecting the decoding complexity.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2019.2943334