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:
Feb. 18, 2014
Filed:
Jul. 20, 2010
Wei Zhou, Beijing, CN;
LI Zou, Shangal, CN;
Yuping Zhao, Beijing, CN;
Xiaoxin Zhang, Beijing, CN;
Peng Liu, Beijing, CN;
Charles Chuanming Wang, Philadelphia, PA (US);
Wei Zhou, Beijing, CN;
Li Zou, Shangal, CN;
Yuping Zhao, Beijing, CN;
Xiaoxin Zhang, Beijing, CN;
Peng Liu, Beijing, CN;
Charles Chuanming Wang, Philadelphia, PA (US);
Thomson Licensing, Issy les Moulineaux, FR;
Abstract
Modern coding and modulation techniques have greatly improved the transmission of signals. A method is described including receiving a stream of data bits, demultiplexing the stream into a first and second substream, encoding the first and second substream using a low density parity check coding process, and mapping the first substream to a first region of a symbol constellation map and the second substream to a second region. Also, an apparatus is described including a demultiplexer that produces a first and second bitstream, a first encoder that encodes the first substream using a low density parity check coding process at a first encoding rate, a second encoder that encodes the second substream at a second rate, and a symbol mapper that maps bits from the first substream to a first region of a symbol constellation map and maps bits from the second substream to a second region.