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. 16, 2011
Filed:
Jan. 04, 2008
Hakan Inanoglu, Acton, MA (US);
Leon Metreaud, Pepperell, MA (US);
Mark S. Wallace, Bedford, MA (US);
Xiangdong Zhang, Westford, MA (US);
Hakan Inanoglu, Acton, MA (US);
Leon Metreaud, Pepperell, MA (US);
Mark S. Wallace, Bedford, MA (US);
Xiangdong Zhang, Westford, MA (US);
Qualcomm Incorporated, San Diego, CA (US);
Abstract
Certain aspects and embodiments provide for accurate measurement and estimation of imbalances between in-phase (I) and quadrature (Q) components of a complex baseband signal. The accuracy of I/Q phase imbalance estimates may be enhanced by conducting them on a transmitter and a receiver that are connected via a local, loopback connection and by removing cross-spectrum interference in transferred packets. Once these accurate I/Q phase imbalances are determined, they may be used to adjust a signal processed by the transmitter or the receiver to increase the performance and data throughput of communications using the signal.