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:
May. 26, 2009
Filed:
Mar. 12, 2004
Douglas A. Cairns, Durham, NC (US);
Gregory E. Bottomley, Cary, NC (US);
Yi-pin Eric Wang, Cary, NC (US);
Tracy L. Fulghum, Durham, NC (US);
Elias Jonsson, Malmö, SE;
Douglas A. Cairns, Durham, NC (US);
Gregory E. Bottomley, Cary, NC (US);
Yi-Pin Eric Wang, Cary, NC (US);
Tracy L. Fulghum, Durham, NC (US);
Elias Jonsson, Malmö, SE;
Telefonaftiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
Exemplary received signal processing may be based on maintaining a model of received signal impairment correlations, wherein each term of the model is updated periodically or as needed based on measuring impairments for a received signal of interest. An exemplary model comprises an interference impairment term scaled by a first model fitting parameter, and a noise impairment term scaled by a second model fitting parameters. The model terms may be maintained based on current channel estimates and delay information and may be fitted to measured impairment by adapting the model fitting parameters based on the measured impairment. The modeled received signal impairment correlations may be used to compute RAKE combining weights for received signal processing, or to compute Signal-to-Interference (SIR) estimates. Combined or separate models may be used for multiple received signals. As such, the exemplary modeling is extended to soft handoff, multiple antennas, and other diversity situations.