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:
Dec. 02, 2014
Filed:
Jul. 02, 2007
Applicants:
Tomas Stolt, Stockholm, SE;
BO Hedberg, Kista, SE;
Inventors:
Tomas Stolt, Stockholm, SE;
Bo Hedberg, Kista, SE;
Assignee:
Unwired Planet, LLC, Reno, NV (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 27/00 (2006.01); H04L 25/03 (2006.01); H04L 1/20 (2006.01); H04L 1/00 (2006.01);
U.S. Cl.
CPC ...
H04L 1/205 (2013.01); H04L 25/03834 (2013.01); H04L 1/0015 (2013.01); H04L 1/0003 (2013.01);
Abstract
A modulation method for data packets transmitted on a mobile communication channel, the method comprising a first linear modulation mode, to be used when the radio conditions are good, and a second constant envelop modulation mode, to be used when the radio conditions are poor. Since a constant envelope-modulated signal is degraded more when time dispersion occurs, the first linear modulation mode is also used when the time dispersion is severe.