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. 17, 2012
Filed:
Jun. 30, 2009
Henry P. Largey, Wylie, TX (US);
Dallas L. Webster, Grand Prairie, TX (US);
Henry P. Largey, Wylie, TX (US);
Dallas L. Webster, Grand Prairie, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
One aspect of the invention includes a communication system that includes a tone generator configured to generate a first tone, a second tone, and a third tone. The third tone can have a frequency that is a harmonic product of at least one of the frequencies of the first and second tones. A transmitter that includes a predistortion system transmits a test signal comprising the first, second, and third tones. A receiver that is communicatively coupled to the transmitter receives and processes a received test signal corresponding to the test signal. The system further includes a controller that generates a set of correction coefficients based on a measured interaction of the third tone with a non-linear signal component in the received test signal. The set of correction coefficients can be provided to the predistortion system for substantially linearizing communication signals transmitted from the transmitter.