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:
Oct. 23, 2012
Filed:
Jun. 05, 2008
Douglas A. Cairns, Durham, NC (US);
Gregory E. Bottomley, Cary, NC (US);
Andreas Cedergren, Bjärred, SE;
Tracy L. Fulghum, Durham, NC (US);
Elias Jonsson, Malmö, SE;
Douglas A. Cairns, Durham, NC (US);
Gregory E. Bottomley, Cary, NC (US);
Andreas Cedergren, Bjärred, SE;
Tracy L. Fulghum, Durham, NC (US);
Elias Jonsson, Malmö, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
Methods and apparatus for determining an impairment covariance matrix for use in an interference-suppressing CDMA receiver are disclosed. In several of the disclosed embodiments, precise information regarding signal propagation delays is not needed. An exemplary method includes the selection of a plurality of processing delays for processing a received CDMA signal. Net channel coefficients for the processing delays are estimated and used to calculate an impairment covariance matrix. The impairment covariance matrix is calculated as a function of the estimated net channel coefficients and the processing delays, without estimating a propagation medium channel response for the received signal.