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:
Mar. 11, 2003
Filed:
May. 21, 1999
Chris Heegard, Santa Rosa, CA (US);
Alantro Communications, Inc., Santa Rosa, CA (US);
Abstract
A method and apparatus for producing a variable rate precoded signal are presented in which a variable rate encoder receives a rate control signal and a data signal and generates a constellation size signal and data symbols. The data symbols and constellation size signal can be used by a precoder to produce a variable rate precoded signal. The precoder can be a Tomlinson/Harashima-Miyakawa precoder which uses the constellation size signal as part of the quantization process. The system can also be used to generate a variable rate modulation encoded signal. The invention provides the ability to create a variable rate signal which can be precoded and to which error correcting codes can be readily applied.