Digital broadcast receiver using weighted sum of channel impulse response data to adjust sampling window
US6434205B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1999 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Apr 6, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H40/18
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A digital broadcast receiver receiving a multi-carrier signal controls the timing of a sampling window, used in demodulation of the multi-carrier signal, according to a channel impulse response waveform obtained by processing of a synchronization signal occurring in the multi-carrier signal. The values in the channel impulse response waveform are multiplied by corresponding weighting coefficients, the resulting products are added to obtain a weighted sum, and the timing of the sampling window is adjusted according the weighted sum. Under a wide variety of reception conditions, this control scheme avoids inter-symbol interference, and leaves adequate timing margins to accommodate new signal components that may appear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.