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. 27, 2010
Filed:
Aug. 28, 2007
Stephan Ten Brink, Irvine, CA (US);
Ravishankar H. Mahadevappa, Irvine, CA (US);
Stephan ten Brink, Irvine, CA (US);
Ravishankar H. Mahadevappa, Irvine, CA (US);
Realtek Semiconductor Corp., Hsinchu, TW;
Abstract
Transmission systems and methods for reducing interference by wideband communication systems with narrowband communications systems are disclosed. In some embodiments an ultrawideband system employing orthogonal frequency division multiplexing (OFDM) with a null post-fix nulls symbols for sub-carriers at potentially interfering frequencies prior to transformation to the time domain and filters a time domain representation using a notch filter to further reduce spectral components at the potentially interfering frequencies. In further embodiments pre-emphasis is applied to a frequency domain representation of symbols to reduce ripples introduced by the notch filter.