Beyond 1$\to$N Decoding: Capacity-Aware Rateless Polar Codes for IR-HARQ
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866914615888183296 |
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| author | Zhang, Huazi Wang, Xianbin Tong, Jiajie Wang, Jun Tong, Wen |
| author_facet | Zhang, Huazi Wang, Xianbin Tong, Jiajie Wang, Jun Tong, Wen |
| contents | This paper introduces a novel framework for polar codes, designed for flexible Incremental Redundancy Hybrid Automatic Repeat Request (IR-HARQ). By generalizing the decoding order beyond the standard 1$\to$N sequence, we enable a capacity-aware scheduling strategy that prioritizes the decoding of reliable subblocks. The framework integrates nested parity-check polar construction and reverse bit-mapping to support continuous and arbitrary transmission lengths $E \in [N_{\min}, N_{\max}]$. Simulation results show that the proposed rateless codes match the coding gain of independently optimized fixed-rate codes across the entire range of rates and lengths. With a validated hardware implementation, this work provides a practical solution for next-generation wireless data channels. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_30885 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Beyond 1$\to$N Decoding: Capacity-Aware Rateless Polar Codes for IR-HARQ Zhang, Huazi Wang, Xianbin Tong, Jiajie Wang, Jun Tong, Wen Information Theory Networking and Internet Architecture This paper introduces a novel framework for polar codes, designed for flexible Incremental Redundancy Hybrid Automatic Repeat Request (IR-HARQ). By generalizing the decoding order beyond the standard 1$\to$N sequence, we enable a capacity-aware scheduling strategy that prioritizes the decoding of reliable subblocks. The framework integrates nested parity-check polar construction and reverse bit-mapping to support continuous and arbitrary transmission lengths $E \in [N_{\min}, N_{\max}]$. Simulation results show that the proposed rateless codes match the coding gain of independently optimized fixed-rate codes across the entire range of rates and lengths. With a validated hardware implementation, this work provides a practical solution for next-generation wireless data channels. |
| title | Beyond 1$\to$N Decoding: Capacity-Aware Rateless Polar Codes for IR-HARQ |
| topic | Information Theory Networking and Internet Architecture |
| url | https://arxiv.org/abs/2605.30885 |