@article{article_808902, title={High Performance Low Latency Parallel Successive Cancelation Decoder Structures for Polar Codes}, journal={Cankaya University Journal of Science and Engineering}, volume={17}, pages={128–136}, year={2020}, url={https://izlik.org/JA62KW28JW}, author={Alrtaimi, Abdelkareim and Gazi, Orhan}, keywords={Multi-Parallel SCD, Polar Coding, BEC}, abstract={Polar codes are decoded using successive cancellation (SC) algorithm where likelihood ratios (LRs) for data bits are calculated in a sequential manner, and decisions are made using the calculated LRs. During the decoding of an information bit, the decision results for the predecessor bits are used, and a wrongly decided predecessor bit has negative effect on the accurate calculation of the LR for the information bit being decoded. In SC algorithm, when LR=1, the information bit is decoded as u ̂_i=0, however, such a decision has 50% of chance of being correct. In this paper, we propose improved polar decoders utilizing a number of SC decoders. We consider the case of LR=1, and propose polar decoder structures for the more accurate calculation of the LRs of the successor bits.}, number={2}