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. 27, 2004
Filed:
Aug. 14, 2000
Applicant:
Inventor:
Bijit Halder, Mountain View, CA (US);
Assignee:
Virata Corporation, Raleigh, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/325 ; H03M 1/341 ;
U.S. Cl.
CPC ...
H03M 1/325 ; H03M 1/341 ;
Abstract
The present invention, generally speaking, provides efficient multi-rate trellis encoder and decoder structures. The trellis encoder allows for a variable number of uncoded bits to be represented in a transmit symbol. The decoder maps received symbols to a smaller constellation by dropping selected symbol bits, whereby, for each of multiple cosets, points within that coset are mapped to a fewer number of points. Substantial simplification of the decoder structure is therefore achieved.