Methods and devices for frequency shift detection
US9942069B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2016 |
| Grant date | Apr 10, 2018 |
| Priority date | — |
| Expiry date | Oct 6, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/005
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and mobile communication device adapted for frequency synchronization with a radio access network (RAN) based on frequency shift detection in a first signal received at the mobile communication device, including: offsetting the first signal's frequency by a first value extracted from a second signal received at the mobile communication device; generating a replica of the first signal from a second value extracted from a third signal received at the mobile communication device; multiplying a component of the offset first signal with the replica to generate a product; transforming the product into a frequency-domain signal; and detecting a peak in the frequency-domain signal to determine the frequency shift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.