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:
Jul. 11, 2006
Filed:
Jan. 18, 2001
Michael J. Rodriguez, Arlington Heights, IL (US);
Michael J. Rodriguez, Arlington Heights, IL (US);
Motorola, Inc., Schaumberg, IL (US);
Abstract
A method () for simplifying soft-decision metric decisions in a M-ary modulation system includes determining () a single function for a soft-decision metric for each bit in a symbol by restricting the set of all possible Gray-coded constellation points to those closest to a boundary between a bit value of 0 and 1 for each bit in the input symbol and applying a predetermined function corresponding to the range of restricted constellation points to the entire possible range of symbols. A next step includes inputting () a symbol having real part, x, and an imaginary part, y. A next step includes () setting a soft-decision metric for each bit in the symbol using the predetermined function from the determining step ().