Patent · US Active

Generation of polar codes with a variable block length utilizing

US10749633B2 · kind B2 · utility

2Cited by

2References

32Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Changlong XU · Beijing, CN
Jian Li · Beijing, CN
Jilei Hou · San Diego, US
Neng Wang · Beijing, CN

Key dates

Filing date	Aug 17, 2016
Grant date	Aug 18, 2020
Priority date	—
Expiry date	Aug 17, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH04L1/0057
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Polar codes may be generated with a variable block length utilizing puncturing. Some puncturing schemes consider punctured bits as unknown bits, and set the log likelihood ratio (LLR) for those bits to zero; while other puncturing schemes consider punctured bits as known bits, and set the LLR for those bits to infinity. Each of these puncturing schemes has been observed to provide benefits over the other under different circumstances, especially corresponding to different coding rates or different signal to noise ratio (SNR). According to aspects of the present disclosure, both puncturing schemes are compared, and the puncturing scheme resulting in the better performance is utilized for transmission.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.