Spread spectrum communications system
US5216693A · kind A · utility
76Cited by
5References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1991 |
| Grant date | Jun 1, 1993 |
| Priority date | — |
| Expiry date | Nov 13, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J2013/0037
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A spread spectrum communications system in which one of a transmitter or a receiver uses a PN code sequence while another side uses a code sequence to which is used constant pattern signals comprising an arbitrary combination of three values of positive, negative and zero for each code of a same PN code sequence. A correlator performs cross correlation process of a code sequence to which the PN code sequence and the pattern signal have been used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.