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:
Sep. 08, 1998
Filed:
Apr. 04, 1996
Robert J O'Dea, Ft. Lauderdale, FL (US);
David L Muri, Sunrise, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A digitally modulated signal is conditioned, such as to facilitate amplification. The digitally modulated signal is derived from an information stream which is mapped onto a symbol constellation to generate a sequence of channel symbols. The sequence of channel symbols is processed to provide a conditioned signal having a signal envelope that avoids signal envelope magnitudes below a threshold value (500). From a signal envelope representing the sequence of channel symbols, symbol interval minimum values are determined as the signal envelope transitions through successive channel symbols of the sequence (510). The conditioned signal is generated by localized adjustment of the signal envelope, such as by insertion of an adjustment pulse, to increase a particular symbol interval minimum value, when that value is below the threshold value (520, 530, 540, 545, 555).