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:
Jan. 25, 2011
Filed:
Mar. 28, 2007
Applicants:
Hua YE, Durham, NC (US);
Daniel Iancu, Pleasantville, NY (US);
Inventors:
Hua Ye, Durham, NC (US);
Daniel Iancu, Pleasantville, NY (US);
Assignee:
Aspen Acquisition Corporation, San Diego, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 5/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of demapping in a receiver including deriving M intermediate soft bit values yfor the I and Q data of the input signal as a function of the spacing in the constellation; and limiting the range of the M values y. A look-up table index is derived for each of the limited M values y. A look-up table, having 2entries for supporting up to N soft bit outputs, is indexed using the derived indices; and K soft bits for each of the M values yof the I and Q data are outputted.