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:
Apr. 20, 2010
Filed:
Jun. 25, 2003
Lydie Desperben, Toulouse, FR;
Mathieu Villion, Toulouse, FR;
Lydie Desperben, Toulouse, FR;
Mathieu Villion, Toulouse, FR;
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
An arrangement () and method, for iterative channel impulse response estimation in a system such as a GSM/EDGE system employing a transmission channel, by: producing () from a received signal (y) a channel impulse response estimate signal (p); and producing () from the received signal (y) a noise estimate signal (w) which is iteratively fed back to improve the channel impulse response estimate signal (p). The noise estimate signal comprises a matrix (w) respresenting the inverse of noise covariance; the matrix may be calculated at each iteration or may be selected from predetermined values corresponding to statistics of expected noise. This provides the advantages of reduced complexity, independence of the equalization method used to produce the channel impulse response estimate signal, and consequent performance improvement.