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:
Oct. 09, 2018
Filed:
Apr. 21, 2017
Electronics and Telecommunications Research Institute, Daejeon, KR;
Bing Hui, Daejeon, KR;
Junhyeong Kim, Daejeon, KR;
Il Gyu Kim, Chungcheongbuk-do, KR;
Hoon Lee, Daejeon, KR;
Hee Sang Chung, Daejeon, KR;
Sung woo Choi, Daejeon, KR;
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon, KR;
Abstract
A transmitting apparatus for modulating data based on a predetermined 2-QAM constellation and a receiving apparatus and method for demodulating a signal based on the predetermined 2-QAM constellation, wherein the last q-2 bits corresponding to a quadrant of the predetermined 2-QAM constellation are same with a gray code of a 2-QAM constellation, the last q-2 bits corresponding to the remaining quadrants of the predetermined 2-QAM constellation are determined by performing symmetric transformation for the last q-2 bits of the quadrant of the predetermined 2-QAM around the x-axis or the y-axis.