Stepped automatic gain control for OFDM systems
US7697644B2 · kind B2 · utility
5Cited by
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20Claims
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Key dates
| Filing date | Nov 30, 2006 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Nov 12, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2647
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.