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:
Aug. 14, 2012
Filed:
Nov. 19, 2004
Steven Ciccarelli, Ramona, CA (US);
Arun Raghupathy, Bridgewater, NJ (US);
Brian C. Banister, San Diego, CA (US);
Steven Ciccarelli, Ramona, CA (US);
Arun Raghupathy, Bridgewater, NJ (US);
Brian C. Banister, San Diego, CA (US);
QUALCOMM, Incorporated, San Diego, CA (US);
Abstract
A technique for noise reduction in a wireless communication system uses controllable bandwidth filters () to filter a received signal. In a typical implementation, the filters () are used at baseband frequencies. A measurement (RSSI) is indicative of the strength of the received signal. A control circuit () generates a control signal () to control the bandwidth of the filters (). If the received signal strength is above a first threshold, a wider bandwidth may be used for the filters (). If the received signal is below a second threshold, the control circuit () generates the control signal () to set the filters () to a more narrow bandwidth. The system () may also be used with digital filters () following digitization by analog to digital converters (ADCs) (). The system () is particularly well-suited for operation with noise-shaped ADCs (), such as Delta-Sigma converters.