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. 07, 2005
Filed:
Dec. 30, 2002
Salvador Sibecas, Lake Worth, FL (US);
Glafkos Stratis, Lake Worth, FL (US);
Celestino Corral, Lake Worth, FL (US);
Shahriar Enami, Boynton Beach, FL (US);
Gregg Rasor, Lantana, FL (US);
Robert Gorday, Wellington, FL (US);
Salvador Sibecas, Lake Worth, FL (US);
Glafkos Stratis, Lake Worth, FL (US);
Celestino Corral, Lake Worth, FL (US);
Shahriar Enami, Boynton Beach, FL (US);
Gregg Rasor, Lantana, FL (US);
Robert Gorday, Wellington, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An orthogonal frequency division multiplexing (OFDM) transmitter method, consistent with certain embodiments of the present invention arranges OFDM data symbols representing data bits for transmission in a packet. A prescribed pattern of OFDM data symbols are removed () and replaced () with pilot symbols. The packet is then transmitted () to an OFDM receiver that receives the packet () and determines a channel correction factor from the pilot pattern. The receiver then estimates a plurality of channel correction factors, one for each of the plurality of OFDM symbols representing data () and uses these correction factors to correct the OFDM symbols representing data (). Arbitrary data are then inserted in place of the pilot symbols (). The OFDM symbols representing data along with the arbitrary data are then decoded using an error correction decoder that corrects the errors induced by substitution of the pilot symbols for data symbols ().