Title:
POLAR CODING DESIGN FOR PERFORMANCE AND LATENCY
Document Type and Number:
WIPO Patent Application WO/2018/161274
Kind Code:
A1
Abstract:
A wireless device may decode a polar coded codeword using a successive cancelation (SC) or successive cancelation list (SCL) decoder. The decoder may include an indication of the channel indices for the information bits in the codeword, as well as a default value for the frozen bits. The decoder may determine that the frozen bits preceding the first information bit are all the default value, and may refrain from performing decoding operations to decode these frozen bits. To further reduce decoding latency, an encoder may assign the first information bit to a channel with a higher channel index but a lower reliability. The new first information bit may have more frozen bits preceding it, so the decoder may further reduce the number of decoding operations to decode the codeword. In some cases, the encoder may select the channels for the information bits based on performance and latency thresholds.
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Inventors:
LI JIAN (US)
XU CHANGLONG (US)
WEI CHAO (US)
HOU JILEI (US)
XU CHANGLONG (US)
WEI CHAO (US)
HOU JILEI (US)
Application Number:
PCT/CN2017/075969
Publication Date:
September 13, 2018
Filing Date:
March 08, 2017
Export Citation:
Assignee:
QUALCOMM INC (US)
LI JIAN (CN)
XU CHANGLONG (CN)
WEI CHAO (CN)
HOU JILEI (CN)
LI JIAN (CN)
XU CHANGLONG (CN)
WEI CHAO (CN)
HOU JILEI (CN)
International Classes:
H03M13/13
Foreign References:
US20150333775A1 | 2015-11-19 | |||
CN106027068A | 2016-10-12 | |||
US9503126B2 | 2016-11-22 | |||
US20170047947A1 | 2017-02-16 |
Attorney, Agent or Firm:
NTD PATENT & TRADEMARK AGENCY LIMITED (CN)
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