The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 2017
Filed:
Oct. 10, 2014
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventor:
Kenya Sugihara, Tokyo, JP;
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 25/06 (2006.01); H04L 27/38 (2006.01); H04L 1/00 (2006.01); H03M 13/45 (2006.01); H03M 13/11 (2006.01);
U.S. Cl.
CPC ...
H04L 25/067 (2013.01); H03M 13/1108 (2013.01); H03M 13/1111 (2013.01); H03M 13/45 (2013.01); H04L 1/0054 (2013.01); H04L 27/38 (2013.01);
Abstract
There are provided a hard decision value calculator that calculates hard decision values from I-ch and Q-ch coordinates of a received symbol having been subjected to multilevel modulation, and an LLR calculator that approximately calculates LLRs from the I-ch and Q-ch coordinates of the received symbol. In a case where a sign bit of an LLR calculated by the LLR calculator conflicts with a hard decision value calculated by the hard decision value calculator, an LLR corrector inverts the sign bit of the LLR and outputs the sign-bit-inverted LLR as a soft decision value to an error correction decoder.