Title:
METHODS AND SYSTEMS FOR OPTIMIZING COMPUTATION OF LOG-LIKELIHOOD RATIO (LLR) FOR DECODING MODULATED SYMBOLS
Document Type and Number:
WIPO Patent Application WO/2021/201651
Kind Code:
A1
Abstract:
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as long term evolution (LTE). Methods and systems for optimizing computation of log-likelihood ratio (LLR) for decoding modulated symbols. A method disclosed herein involves receiving at least one symbol transmitted from at least one device, wherein the received at least one symbol is encoded and modulated symbol including a plurality of data bits. The method further includes computing a log-likelihood ratio (LLR) of each bit in the received at least one symbol for decoding the received at least one symbol using a centroid method that involves exploiting a symmetry of a constellation of code words and/or a uncertainty region defined on a constellation of code words.
Inventors:
VANKAYALA SATYA KUMAR (IN)
GUNDETI RAVI TEJA (IN)
SAH ABHAY KUMAR (IN)
NIGAM ANSHUMAN (IN)
GODAVARTI SATYA VENKATA UMAKISHORE (IN)
KOMMINENI ISSAAC (IN)
SHETTY SHRUTI (IN)
GUNDETI RAVI TEJA (IN)
SAH ABHAY KUMAR (IN)
NIGAM ANSHUMAN (IN)
GODAVARTI SATYA VENKATA UMAKISHORE (IN)
KOMMINENI ISSAAC (IN)
SHETTY SHRUTI (IN)
Application Number:
PCT/KR2021/004146
Publication Date:
October 07, 2021
Filing Date:
April 02, 2021
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
International Classes:
H04L1/00; H03M13/11; H03M13/39; H04L25/03; H04L27/34; H04L27/38
Foreign References:
| US20070260959A1 | 2007-11-08 | |||
| US20160087757A1 | 2016-03-24 | |||
| US20090323846A1 | 2009-12-31 | |||
| US20120219097A1 | 2012-08-30 |
Other References:
LE, DINH-DUNG; NGUYEN, DUC-PHUC; TRAN, THI-HONG; NAKASHIMA, YASUHIKO: "Log-Likelihood Ratio Calculation Using 3-Bit Soft-Decision for Error Correction in Visible Light Communication Systems", IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, vol. E101-A, no. 12, 12 December 2018 (2018-12-12), JP, pages 2210 - 2212, XP009531122, ISSN: 1745-1337, DOI: 10.1587/transfun.E101.A.2210
Attorney, Agent or Firm:
KWON, Hyuk-Rok et al. (KR)
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