Correlation circuit for spread spectrum communication, demodulation circuit and reception apparatus
US6647056B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2000 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Feb 24, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/70707
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a conventional correlation circuit for spread spectrum communication, when a sliding correlator is used, much time is required. When a matched filter is used, a problem is that a circuit scale and power consumption are increased. In the present invention, however, there is provided a correlation circuit for spread spectrum communication which minimizes the number of constituting elements, and can reduce the power consumption. In the correlation circuit for spread spectrum communication of the present invention, a spread spectrum received signal is A/D converted and accumulated in a data memory unit by a symbol unit, data rate is converted, and a high-rate MF performs a product sum operation processing at a high rate so that a correlation output is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.