Chip dithering using permuted randomized selection sets to enhance the LPI/LPD characteristics of a waveform
US11016734B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2020 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Feb 12, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J13/0018
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communications system that pseudo-randomly dithers the widths of chips that are multiplied by bit symbols for spread spectrum purposes. The system includes a first random sequence generator that generates a first sequence of random numbers at a sample rate and a decision processor responsive to the first sequence of random numbers that generates a separate command at the sample rate each time one of the random numbers exceeds a predetermined threshold. The system further includes a second random sequence generator that generates select random numbers, where the second random number generator changes the select random number each time it receives one of the commands. The system also includes a chip width processor responsive to the random numbers from the second random sequence generator, where the chip width processor selects a new set of chips each having a certain width in response to receiving each random number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.