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:
Dec. 17, 2002
Filed:
Jun. 27, 1997
Oki Electronic Industry Co., Ltd., Tokyo, JP;
Abstract
A code division multiple access receiver estimates symbol values transmitted by different stations by despreading a combined received signal, weights the estimated symbol values by use of weighting factors calculated for the different stations, respreads the weighted symbol values to estimate the interference due to each station, and subtracts the estimated interference from the received signal to produce a residual signal. The weighting factors can be calculated from the residual signal; the weighting factors are calculated so as to minimize the power of the residual signal. The weighting factors are adjusted at certain intervals, preferably at intervals determined from the rate of fading of the received signal.