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:
Jun. 05, 2001
Filed:
Aug. 27, 1998
Kazuhiko Fukawa, Yokohama, JP;
NTT Mobile Communications Network Inc., Tokyo, JP;
Abstract
Received baseband signals from a plurality of antennas,to,are linearly combined through multiplication by weighting coefficients, then a decision signal is delayed for one symbol duration, and the delayed signal is multiplied by a feedback filter coefficient w,* to generate intersymbol interference, which is subtracted from the linearly combined output y(i). The subtracted output is subjected to a signal decision to obtain a decision signal, then the difference between the input into a decision unit,and the decision signal is obtained as an error signal e(i), and weighting coefficients w,* to w,* and the feedback filter coefficient w,* are estimated in a parameter estimation part,so that the square of the error signal e(i) is minimized. At the transmitting side a transmitted signal is delayed for 1T and is then multiplied by the feedback filter coefficient w,*, then intersymbol interference is subtracted from the transmitted signal to distort it, and the distorted signal is multiplied by the weighting coefficients w,* to w,*, respectively, thereby creating transmitted baseband signals for application to the antennas,to,.