Symbol synchronizing device
US7310398B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2004 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Aug 3, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/044
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A symbol synchronization device that enables effective symbol synchronization establishment and synchronization holding for an arbitrary spread code sequence. The device includes (i) a primary demodulation section for receiving a spread modulation signal where chips for symbol synchronization are added to a symbol data after spread modulation, and demodulating the spread modulation signal to a base band spread modulation signal, (ii) symbol synchronization chip removal means for removing chips for symbol synchronization from the base band spread modulation signal, (iii) a secondary demodulation section for despreading the base band spread modulation signal from which the chips for symbol synchronization are removed, (iv) a symbol timing regeneration section for regenerating a symbol timing by performing in-phase addition of the base band spread modulation signals; and (v) a symbol decision section for deciding the symbols for the despread signals that are output from the secondary demodulation section, synchronizing with the symbol timing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.