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:
Jan. 08, 2013
Filed:
Mar. 30, 2009
Zigang Yang, Plano, TX (US);
Fernando A. Mujica, Allen, TX (US);
Gregory Copeland, Plano, TX (US);
Murtaza Ali, Plano, TX (US);
Zigang Yang, Plano, TX (US);
Fernando A. Mujica, Allen, TX (US);
Gregory Copeland, Plano, TX (US);
Murtaza Ali, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An apparatus and system are provided for crest factor reduction (CFR). Preferably, a peak from the wideband signal is detected. A gain from the magnitude of the peak and a threshold can then be calculated. Based on this information, each carrier's contribution to the peak can be approximated, and a cancellation pulse coefficient for each carrier from its contribution to the peak can be calculated. A base cancellation pulse can be calculated from the cancellation pulse coefficients for each carrier, and a cancellation pulse can be calculated from the base cancellation pulse and the gain, which can then be applied to the wideband signal.