Correlation circuit for spread spectrum communication
US6891885B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 1, 2001 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | May 13, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/70703
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
There is disclosed a correlation circuit for spread spectrum communication, which can demodulate users having superposed demodulation phases and equaling or exceeding a sum of products calculation processing ability without enlarging a constitution. When a plurality of users more than a specified number exist in the same phase of the input signal from a memory, a controller controls a transfer speed of a shift of one sample in an input signal register in order to hold a sufficient time for completing calculation of a sum of products with all the plurality of users in a sum of products calculator in the correlation circuit for spread spectrum communication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.