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. 20, 2002
Filed:
Sep. 07, 2000
Mikko Huttunen, Espoo, FI;
Nokia Networks Oy, Espoo, FI;
Abstract
A self-optimizing channel equalization and detection method and a channel equalizer/detector ( ) implementing the method, the method comprising receiving a signal (RFI), taking samples of the signal within each symbol period over a timeslot, calculating reference constellation points within each symbol period on the basis of a channel estimate, updating the channel estimate within each symbol period on the basis of an error between each sample point and the reference constellation point, the error having been processed by one or more adaptivity parameters, and defining, for bit detection, the signal path having the best error metrics in the timeslot on the basis of the error metrics calculated from the sample points on the basis of the channel estimate. One or more adaptivity parameters used in channel estimate update are updated by timeslots in a direction which tends to decrease the error metrics of the best defined signal path within a single-timeslot or multiple-timeslot observation period when being compared with the error metrics of a corresponding path in a previous timeslot.