Asymmetric spread spectrum correlator
US5016255A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1989 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Aug 7, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/709
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus for decoding a received spread spectrum signal having a data signal modulated with a pseudo-noise code and transmitted as an RF spread spectrum signal. A reference-sequence-storage device holds a reference-pseudo-noise signal, and a receive-sequence storage device holds a received spread spectrum signal. A chip comparator adds each chip of the received spread spectrum signal by each respective chip of the pseudo-noise signal, thereby generating a plurality of chip comparison signals. A summer adds the plurality of chip comparison signals, generating a correlation signal. The comparator compares the correlation signal to a statistically predetermined threshold level, and generates a first data-symbol signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.