Memory management and path sort techniques in a polar code successive cancellation list decoder
US9973301B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2016 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Nov 23, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0058
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Various embodiments are described of a system and method for improved SCL decoder operation. In particular, various embodiments are described which improve the efficiency of the buffer management based on updated path metric statistics. In some embodiments, the SCL decoder may perform selective replacement to limit the extent of LLR updates per row only to the statistics that have changed since the previous update cycle. In some embodiments, the SCL decoder may perform deferred updates, which may involves in-place calculation of both ûφ=0 and ûφ=1 bit estimate (LLR) updates based on the row from which the updated row will be derived.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.