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:
May. 27, 2008
Filed:
May. 23, 2001
Chao Wang, Legal Representative, Ottawa, Ontario, CA;
Mohamed El-tarkhuni, Sharjah, AE;
Zhi Ding, Iowa City, IA (US);
Yuri S. Shinakov, Moscow, 117574, RU;
Alexandre M Chloma, Moskovskaja Oblast, 140160, RU;
Mikhail G. Bakouline, Moskovskaja Oblast, 142110, RU;
Vitali B. Kreindeline, Moscow, 109518, RU;
Chao Wang, legal representative, Ottawa, Ontario, CA;
Mohamed El-Tarkhuni, Sharjah, AE;
Zhi Ding, Iowa City, IA (US);
Yuri S. Shinakov, Moscow, 117574, RU;
Alexandre M Chloma, Moskovskaja Oblast, 140160, RU;
Mikhail G. Bakouline, Moskovskaja Oblast, 142110, RU;
Vitali B. Kreindeline, Moscow, 109518, RU;
Other;
Abstract
An iterative arrangement of channel estimator (), a Kalman filter unit (), and a soft demodulator () is provided for producing an estimate of complex gain of a CDMA communications channel carrying data and pilot channels, and demodulated data of the data channel. An initial channel estimate is produced by the estimator () using only the low-power pilot channel. This later is improved by the iterative process using the data channel. The complex gains is represented by a sum of sinusoidal signals with different frequencies and randomly variable amplitude and phase.