2017/05/16 by Carlo Condo, Condo, Carlo, Seyyed Ali Hashemi +3
Biochemistry, Genetics and Molecular Biology · Computer Science · Engineering · #Advanced Wireless Communication Techniques #Advanced biosensing and bioanalysis techniques #Error Correcting Code Techniques #FOS: Computer and information sciences #Information Theory (cs.IT)
paper · pdf · doi:10.48550/arxiv.1705.05674
openalex publication_date 2017/05/16 · openalex created_date 2022/10/03 · openalex updated_date 2026/07/28
Polar codes are a family of capacity-achieving error-correcting codes, and\nthey have been selected as part of the next generation wireless communication\nstandard. Each polar code bit-channel is assigned a reliability value, used to\ndetermine which bits transmit information and which parity. Relative\nreliabilities need to be known by both encoders and decoders: in case of\nmulti-mode systems, where multiple code lengths and code rates are supported,\nthe storage of relative reliabilities can lead to high implementation\ncomplexity. In this work, observe patterns among code reliabilities. We propose\nan approximate computation technique to easily represent the reliabilities of\nmultiple codes, through a limited set of variables and update rules. The\nproposed method allows to tune the trade-off between reliability accuracy and\nimplementation complexity. An approximate computation architecture for encoders\nand decoders is designed and implemented, showing 50.7% less area occupation\nthan storage-based solutions, with less than 0.05 dB error correction\nperformance degradation.\n