Timing tracker for DPSK receiver
US8295404B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2008 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Apr 7, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0069
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
One embodiment of a DPSK receiver includes an ADC, a down-sampler, and a timing tracker. The ADC samples a received DPSK signal providing sub-samples of a digital signal. The timing tracker examines differences between amplitudes of currently selected sub-samples and sub-samples before and after the currently selected sub-samples. The differences may indicate a timing adjustment may be made to the digital signal. The timing tracker may change the timing of the digital signal by modifying the configuration of the down-sampler. Additionally, the timing tracker may also correct phase errors introduced by configuration changes of the down-sampler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.