A Modified Selected Mapping Scheme for Peak-to-Average Power Ratio Reduction in Polar-Coded Orthogonal Frequency-Division Multiplexing Systems
This paper proposes a modified polar coding-based selected mapping (PC-SLM) scheme to reduce the peak-to-average power ratio (PAPR) in orthogonal frequency-division multiplexing (OFDM) systems. In the proposed transmitter, modulated signal vector for a subset of frozen bits, termed PAPR bits, are pr...
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MDPI AG
2025-05-01
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| author | Chao Xing Nixi Chen Hu Ana García Armada |
| author_facet | Chao Xing Nixi Chen Hu Ana García Armada |
| author_sort | Chao Xing |
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| description | This paper proposes a modified polar coding-based selected mapping (PC-SLM) scheme to reduce the peak-to-average power ratio (PAPR) in orthogonal frequency-division multiplexing (OFDM) systems. In the proposed transmitter, modulated signal vector for a subset of frozen bits, termed PAPR bits, are precomputed, enabling a single polar encoder and modulator to generate multiple modulation symbols, thereby significantly reducing the hardware complexity compared to existing PC-SLM schemes. To achieve side information (SI)-free transmission, a novel belief propagation (BP)-based receiver is introduced, incorporating a G-matrix-based early termination criterion and a frozen bit check (BP-GF) for joint detection and decoding. Simulation results show that the proposed scheme significantly reduces PAPR across various code lengths, with greater gains as the number of PAPR bits increases. Furthermore, for PC-SLM schemes employing the partially frozen bit method, the BP-GF-based receiver achieves a PAPR reduction and error correction performance comparable to that of the successive cancellation (SC)-based receiver. Additionally, the BP-GF-based receiver exhibits lower decoding latency than the successive cancellation list (SCL)-based receiver. |
| format | Article |
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| institution | DOAJ |
| issn | 2078-2489 |
| language | English |
| publishDate | 2025-05-01 |
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| spelling | doaj-art-e2fa5183f51c4b0db40485752b35b80b2025-08-20T03:14:31ZengMDPI AGInformation2078-24892025-05-0116538410.3390/info16050384A Modified Selected Mapping Scheme for Peak-to-Average Power Ratio Reduction in Polar-Coded Orthogonal Frequency-Division Multiplexing SystemsChao Xing0Nixi Chen Hu1Ana García Armada2College of Information Science and Technology, Henan University of Technology, Zhengzhou 450000, ChinaDepartment of Signal Theory and Communications, University Carlos III de Madrid, E-28911 Leganes, SpainDepartment of Signal Theory and Communications, University Carlos III de Madrid, E-28911 Leganes, SpainThis paper proposes a modified polar coding-based selected mapping (PC-SLM) scheme to reduce the peak-to-average power ratio (PAPR) in orthogonal frequency-division multiplexing (OFDM) systems. In the proposed transmitter, modulated signal vector for a subset of frozen bits, termed PAPR bits, are precomputed, enabling a single polar encoder and modulator to generate multiple modulation symbols, thereby significantly reducing the hardware complexity compared to existing PC-SLM schemes. To achieve side information (SI)-free transmission, a novel belief propagation (BP)-based receiver is introduced, incorporating a G-matrix-based early termination criterion and a frozen bit check (BP-GF) for joint detection and decoding. Simulation results show that the proposed scheme significantly reduces PAPR across various code lengths, with greater gains as the number of PAPR bits increases. Furthermore, for PC-SLM schemes employing the partially frozen bit method, the BP-GF-based receiver achieves a PAPR reduction and error correction performance comparable to that of the successive cancellation (SC)-based receiver. Additionally, the BP-GF-based receiver exhibits lower decoding latency than the successive cancellation list (SCL)-based receiver.https://www.mdpi.com/2078-2489/16/5/384polar codespeak-to-average power ratio (PAPR)belief propagation (BP)early termination criteria |
| spellingShingle | Chao Xing Nixi Chen Hu Ana García Armada A Modified Selected Mapping Scheme for Peak-to-Average Power Ratio Reduction in Polar-Coded Orthogonal Frequency-Division Multiplexing Systems Information polar codes peak-to-average power ratio (PAPR) belief propagation (BP) early termination criteria |
| title | A Modified Selected Mapping Scheme for Peak-to-Average Power Ratio Reduction in Polar-Coded Orthogonal Frequency-Division Multiplexing Systems |
| title_full | A Modified Selected Mapping Scheme for Peak-to-Average Power Ratio Reduction in Polar-Coded Orthogonal Frequency-Division Multiplexing Systems |
| title_fullStr | A Modified Selected Mapping Scheme for Peak-to-Average Power Ratio Reduction in Polar-Coded Orthogonal Frequency-Division Multiplexing Systems |
| title_full_unstemmed | A Modified Selected Mapping Scheme for Peak-to-Average Power Ratio Reduction in Polar-Coded Orthogonal Frequency-Division Multiplexing Systems |
| title_short | A Modified Selected Mapping Scheme for Peak-to-Average Power Ratio Reduction in Polar-Coded Orthogonal Frequency-Division Multiplexing Systems |
| title_sort | modified selected mapping scheme for peak to average power ratio reduction in polar coded orthogonal frequency division multiplexing systems |
| topic | polar codes peak-to-average power ratio (PAPR) belief propagation (BP) early termination criteria |
| url | https://www.mdpi.com/2078-2489/16/5/384 |
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