US Patent 7697644 Stepped automatic gain control for OFDM systems

Patent 7697644 was granted and assigned to Newport Media on April, 2010 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Newport Media

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7697644

Date of Patent

April 13, 2010

Patent Application Number

11565003

Date Filed

November 30, 2006

Patent Primary Examiner

‌

Ted M Wang

Patent abstract

A system and method for performing stepped automatic gain control (AGC) for orthogonal-frequency-division-multiplexing (OFDM) applications comprises a radio frequency (RF) tuner and an OFDM demodulator operatively connected to the RF tuner, the OFDM demodulator comprising logic circuitry adapted to (i) detect OFDM symbols from a stream of data; (ii) detect boundaries of the OFDM symbols; (iii) detect a cyclic prefix duration of data values associated with the OFDM symbols; and (iv) provide a feedback to the RF tuner of the information pertaining to the boundaries of the OFDM symbols and the cyclic prefix duration.