Spread spectrum communications using complex chip sequences
US8488654B1 · kind B1 · utility
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17Claims
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Key dates
| Filing date | Sep 23, 2009 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Mar 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J13/0022
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for spread-spectrum communication includes forming a complex valued chipping sequence and then using the complex valued chipping sequence to spread or despread data. According to another method, a direct sequence spread spectrum (DSSS) radio performs the steps of receiving a radio-frequency signal and then identifying frequencies within the radio-frequency signal which are associated with noise sources. The DSSS radio then self-adjusts to reduce effects of the noise sources or to reduce interference created by the radio upon other communication channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.