Multi-band hyperbolic frequency modulation spread spectrum communication method based on cross sub-band division
US12101114B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2020 |
| Grant date | Sep 24, 2024 |
| Priority date | — |
| Expiry date | Feb 24, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B13/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention discloses is a multi-band hyperbolic frequency modulation spread spectrum communication method based on cross sub-band division. In the present solution, multi-band division of different sub-band quantities is performed on an available bandwidth of an underwater acoustic system according to the parity of the serial number of the current spread spectrum period to achieve the aim of cross sub-band division. On this basis, a plurality of divided sub-bands are grouped in pairs; for each group, sub-band selection is performed according to different transmitted data by using a sub-band selection and activation method to realize multi-band parallel transmission. Meanwhile, in each spread spectrum period, an activated sub-band performs frequency modulation on a modulated signal by using rising and falling hyperbolic frequency modulation signals respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.