Spread spectrum communication system
US4941150A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 5, 1988 |
| Grant date | Jul 10, 1990 |
| Priority date | — |
| Expiry date | May 5, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/707
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A spread spectrum communication system has, in a transmission part, a first circuit for extracting a first carrier signal from a predetermined broadcase wave and generating a first clock signal by using the first carrier signal, a second circuit for generating a first pseudo-noise signal by using the first clock signal from the first circuit, and a third circuit for modulating an information signal and broadening a frequency band of the modulated information signal by using the first pseudo-noise signal from the second circuit. A reception part of the spread spectrum communication system uses a second clock signal, a frequency of which is identical to that of the first clock signal. Thereby the second clock signal becomes identical to the first clock signal in frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.