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. 15, 2008
Filed:
Apr. 18, 2003
Decoding method and apparatus using channel state information for use in a wireless network receiver
Milind D. Paranjpe, Mountain View, CA (US);
Brian Hart, Wollstonecraft, AU;
David J. Pignatelli, Saratoga, CA (US);
Ender Ayanoglu, Irvine, CA (US);
Eldad Perahia, Sunnyvale, CA (US);
Philip J. Ryan, Stanmore, AU;
Bretton Lee Douglas, San Jose, CA (US);
Uri Parker, Kibbutz Shaar Hagolan, IL;
Milind D. Paranjpe, Mountain View, CA (US);
Brian Hart, Wollstonecraft, AU;
David J. Pignatelli, Saratoga, CA (US);
Ender Ayanoglu, Irvine, CA (US);
Eldad Perahia, Sunnyvale, CA (US);
Philip J. Ryan, Stanmore, AU;
Bretton Lee Douglas, San Jose, CA (US);
Uri Parker, Kibbutz Shaar Hagolan, IL;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A method, apparatus, and carrier medium for determining channel state information (CSI) in an OFDM radio receiver. The receiver is for receiving packets of OFDM data as a result of OFDM data being transmitted. The method includes forming an estimate of the channels of the subcarriers for received OFDM data to provide frequency responses of the channels of the subcarriers, and forming a measure of quality ('channel state information,' 'CSI') for the channels of the subcarriers based on the relative strength of the frequency responses. The forming of the CSI does not require estimating the relative amount of noise or interference in each channel. The formed CSI is used in demodulating and decoding received OFDM data.