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Improving Belief Propagation Decoding of Polar Codes using Bi-Directional Bit-Flipping Strategy |
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| รหัสดีโอไอ | |
| Creator | Nuttawat Mitsungnern |
| Title | Improving Belief Propagation Decoding of Polar Codes using Bi-Directional Bit-Flipping Strategy |
| Contributor | Virasit Imtawil, Anupap Meesomboon, Pirat Khunkitti, Watid Phakphisut, Puripong Suthisopapan |
| Publisher | Faculty of Engineering Mahasasakham University |
| Publication Year | 2565 |
| Journal Title | Engineering Access |
| Journal Vol. | 8 |
| Journal No. | 2 |
| Page no. | 287-295 |
| Keyword | polar codes, belief propagation, bit-flipping |
| URL Website | https://ph02.tci-thaijo.org/index.php/mijet/index |
| Website title | THAIJO Engineering Access |
| ISSN | 2730-4175 |
| Abstract | It is difficult to achieve high throughput and low latency from the cyclic redundancy check (CRC-) aided successive cancellation list (CA-SCL) polar decoder employed in 5G new radio systems. To tackle this problem, the hardware-efficient belief propagation (BP) decoder has been extensively studied. Unfortunately, the performance of the BP decoding for polar codes is quite poor. To improve the performance of this decoder, a novel bi-directional bit-flipping (BF) strategy is proposed. The rule of generating the flip set based on the post log-likelihood ratio (LLR) is combined with the possibility of the two-way flipping. With the help of this idea, the decoding performance of BP decoder is identical to that of the CA-SCL decoder. Moreover, with the same complexity, our proposed BF strategy outperforms both the best known one-directional BF strategy and the previously found bi-directional BF strategy at BLER of 10-4 |
