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LLR-Based SC Decoding of Polar Codes for Two-User Binary-Input MAC
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- Authors
- Jong-Hwan Kim, Yeon Joon Choi, Sang-Hyo Kim, Keunyoung Kim
- Issue Date
- 2018-02
- Citation
- IEEE Communications Letters, v.22, no.2, pp.256-259
- ISSN
- 1089-7798
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Project Code
- 17ZF1100, Wireless Transmission Technolgy in Multi-point to Multi-point Communications, Keunyoung Kim
- Abstract
- This letter considers a hardware-friendly log-likelihood ratio (LLR)-based successive cancellation (SC) decoding of polar codes for two-user binary-input multiple access channels. Based on the known recursive equations in the likelihood domain, we obtain LLR-based recursive equations for the SC decoding. An approximate LLR-based decoding is also introduced, which shows small performance loss at high error rate, but has significantly low complexity compared with the previous likelihood-based decoding.
- KSP Keywords
- Hardware-friendly, Multiple access channels, Performance loss, Polar codes, SC Decoding, Successive cancellation, error rate, log likelihood ratio(LLR), low-complexity