2025/12/11 by Jiewei Feng, Feng, Jiewei, Peihong Yuan +5
Computer Science · Engineering · #Error Correcting Code Techniques #Advanced Wireless Communication Techniques #Coding theory and cryptography
paper · pdf · doi:10.48550/arxiv.2512.10223
We investigate the use of modern code-agnostic decoders to convert CA-SCL from an incomplete decoder to a complete one. When CA-SCL fails to identify a codeword that passes the CRC check, we apply a code-agnostic decoder that identifies a codeword that satisfies the CRC. We establish that this approach gives gains of up to 0.2 dB in block error rate for CA-Polar codes from the 5G New Radio standard. If, instead, the message had been encoded in a systematic CA-polar code, the gain improves to 0.2 ~ 1dB. Leveraging recent developments in blockwise soft output, we additionally establish that it is possible to control the undetected error rate even when using the CRC for error correction.