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. 09, 2014
Filed:
Feb. 26, 2008
Kaj Jansen, Salo, FI;
Markku J. Heikkilä, Oulu, FI;
Ulo Parts, Helsinki, FI;
Juha Heiskala, Helsinki, FI;
Zoltan Safar, Atlanta, GA (US);
Kaj Jansen, Salo, FI;
Markku J. Heikkilä, Oulu, FI;
Ulo Parts, Helsinki, FI;
Juha Heiskala, Helsinki, FI;
Zoltan Safar, Atlanta, GA (US);
Nokia Corporation, Espoo, FI;
Abstract
A semi-single frequency network (SFN) concept is presented. According to the SFN concept, the same data signal is transmitted from multiple base stations to a mobile terminal simultaneously on the same frequency band. Accordingly, the transmitted signals are combined in the radio channel and the mobile terminal experiences the transmitted signals as one signal propagated through a multipath channel. Additionally, each base station transmits a base station specific pilot signal. The mobile terminal carries out a channel estimation procedure for each received pilot signal and combines the channel estimates to obtain information how to equalize the received data signal. Then, the mobile terminal calculates equalization weights from the combined channel estimates and equalizes the received data signal.