Spread spectrum system assigning information signals to message-code signals
US6831905B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2000 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | Sep 12, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/54
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A spread spectrum system having an assignor, a spread-spectrum processor and a transmitter. The assignor assigns each arriving information signal to a message-code signal. Each message-code signal is different then other message-code signals. The spread-spectrum processor generates a pilot code signal and processes the information signals with the message-code signals to generate spread-spectrum process-message signals synchronized to the pilot-code signal. A transmitter combines the spread-spectrum process-message signals and the pilot-code signal to generate a CDM signal. The transmitter modulates the CDM signal with a carrier signal for transmission over the communications channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.