A SLM Scheme for PAPR Reduction in Polar Coded OFDM-IM Systems Without Using Side Information

In the present article, we propose a novel selected mapping (SLM) scheme based on a Polar coding technique for peak to average power ratio (PAPR) reduction in orthogonal frequency division multiplexing with index modulation (OFDM-IM) systems. The proposed scheme by utilizing random frozen bits in po...

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Bibliographic Details
Published in:IEEE transactions on broadcasting Vol. 67; no. 2; pp. 463 - 472
Main Authors: Zhang, Si-Yu, Shahrrava, Behnam
Format: Journal Article
Language:English
Published: New York IEEE 01.06.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Bit error rate
Coders
Decoding
Error correction
Error correction & detection
Error correction codes
Error reduction
Orthogonal Frequency Division Multiplexing
Orthogonal frequency division multiplexing with index modulation(OFDM-IM)
Peak to average power ratio
peak to average power ratio (PAPR)
polar codes
Receivers
selected mapping (SLM)
Sequences
side information (SI)
Simulation
successive cancellation list (SCL)
White noise
ISSN:0018-9316, 1557-9611
Online Access:Get full text
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Summary:In the present article, we propose a novel selected mapping (SLM) scheme based on a Polar coding technique for peak to average power ratio (PAPR) reduction in orthogonal frequency division multiplexing with index modulation (OFDM-IM) systems. The proposed scheme by utilizing random frozen bits in polar codes generates different number of candidate sequences. Then the candidate sequence with the smallest PAPR is selected for transmission. The proposed scheme can be considered as one block in an OFDM-IM system that performs both PAPR reduction and error correction. For a fair comparison, the performance of an OFDM-IM system based on the proposed scheme is compared with a system that carries out the same operations with two separate blocks where a Polar encoder is cascaded with the one for PAPR reduction (such as conventional SLM or PTS), and a Polar coded OFDM-IM system without any PAPR reduction scheme. Moreover, based on our proposed SLM scheme, a novel receiver without using side information (SI) is proposed. This SI free receiver is based on the successive cancellation list (SCL) polar decoding scheme. Simulation results show that as the Polar code can bring both error correction and PAPR reduction capabilities by using our proposed scheme. Also, the proposed SI free receiver can achieve similar bit error rate (BER) performance as that of the ideal case in both additive Gaussian white noise (AWGN) and frequency selective channels.
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ISSN:0018-9316
1557-9611
DOI:10.1109/TBC.2020.3039696