High Performance Low Latency Parallel Successive Cancelation Decoder Structures for Polar Codes
Year: 2020
Type: article
Abstract: Multi-Parallel SCD Polar Coding BEC 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.
Source: DergiPark (Istanbul University)
Authors: Abdelkareim Alrtaimi, Orhan Gazi
Language: English
Subfield: Computer Networks and Communications
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W3094988872