Apparatus and methods for symbol timing error detection, tracking and correction
US8548075B2 · kind B2 · utility
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4References
34Claims
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Key dates
| Filing date | Nov 16, 2010 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | Jan 11, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2695
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods for adjusting timing in a communication system, such as an OFDM system are described. In one implementation an error signal is generated to adjust the timing of a variable rate interpolator so as to adjust FFT timing. The error signal may be based on detection of significant peaks in an estimate of the impulse response of the channel, with the peak locations being tracked over subsequent symbols and the system timing adjusted in response to changes in the peaks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.