Name
Abstract | ||
|---|---|---|
Although iterative decoding of polar codes has recently made huge progress based on the idea of permuted factor graphs, it still suffers from a non-negligible performance degradation when compared to state-of-the-art CRC-aided successive cancellation list (CA-SCL) decoding. In this work, we show that iterative decoding of polar codes based on the belief propagation list (BPL) algorithm can approach the error-rate performance of CA-SCL decoding and, thus, can be efficiently used for decoding the standardized 5G polar codes. Rather than only utilizing the cyclic redundancy check (CRC) as a stopping condition (i.e., for error-detection), we also aim to benefit from the error-correction capabilities of the outer CRC code. For this, we develop two distinct soft-decision CRC decoding algorithms: a Bahl-Cocke-Jelinek-Raviv (BCJR)-based approach and a sum product algorithm (SPA)-based approach. Further, an optimized selection of permuted factor graphs is analyzed and shown to reduce the decoding complexity significantly. Finally, we benchmark the proposed CRC-aided belief propagation list (CA-BPL) decoding to state-of-the-art 5G polar codes under CA-SCL decoding and, thereby, showcase an error-rate performance not just close to the CA-SCL but also close to the maximum likelihood (ML) bound as estimated by ordered statistic decoding (OSD). |
Year | DOI | Venue |
|---|---|---|
2020 | 10.1109/ISIT44484.2020.9174249 | 2020 IEEE International Symposium on Information Theory (ISIT) |
Keywords | DocType | ISSN |
CRC-aided belief propagation list decoding,polar codes,iterative decoding,permuted factor graphs,nonnegligible performance degradation,state-of-the-art CRC-aided successive cancellation list decoding,belief propagation list algorithm,error-rate performance,CA-SCL decoding,outer CRC code,soft-decision CRC,decoding complexity,ordered statistic decoding | Conference | 2157-8095 |
ISBN | Citations | PageRank |
978-1-7281-6433-5 | 0 | 0.34 |
References | Authors | |
12 | 5 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Geiselhart Marvin | 1 | 0 | 0.34 |
| Elkelesh Ahmed | 2 | 0 | 0.34 |
| Ebada Moustafa | 3 | 0 | 0.34 |
| sebastian cammerer | 4 | 157 | 16.76 |
| Stephan ten Brink | 5 | 2912 | 204.86 |