Gain calibration for a Mueller-Muller type timing error detector
US8693596B1 · kind B1 · utility
16Cited by
5References
28Claims
0Family size
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Key dates
| Filing date | Jul 13, 2012 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Jul 13, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0062
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Apparatus and methods calibrate and control detector gain in a Mueller-Muller timing detector. A main signal path includes a Mueller-Muller based timing error detector (MM TED). The main signal path generates a main error signal for clock recovery. A secondary signal path that includes a secondary MM TED. Each signal path samples soft symbols from a received signal. The sampling of the secondary MM TED is deliberately offset in time. A scale factor applied to the main error signal and to a secondary error signal is adaptively adjusted based on a comparison between the main error signal and the secondary error signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.