Adaptive interference-free spread-spectrum system employing binary code sequence sets with zero correlation zone properties
US6963600B1 · kind B1 · utility
19Cited by
7References
11Claims
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Key dates
| Filing date | Jan 26, 2000 |
| Grant date | Nov 8, 2005 |
| Priority date | — |
| Expiry date | Jan 26, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J13/0055
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A direct sequence spread spectrum system consisting of modulator and demodulator wherein the spreading sequence with zero correlation zone properties, and the despreading consists of multiplying the received signal with the same spreading sequence, followed by a low pass filter, decoder and deinterleaver. The bit rate of the spreading sequence for each user is normally much higher than the input encoded data bit rate, and therefore it spreads the system spectrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.