Method and apparatus for performing digital timing recovery on oversampled 802.11b baseband signals
US7295601B1 · kind B1 · utility
11Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2003 |
| Grant date | Nov 13, 2007 |
| Priority date | — |
| Expiry date | Jun 15, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/042
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for performing digital timing recovery includes a rotating demultiplexor receiving a four times oversampled baseband signal and providing four downsampled phases at respective outputs. Each output is processed by a correlation detector which computes a peak sum signal for each downsampled phase. The peak sum signals are processed to produce a best phase select output signal. The best phase select output signal is used to select the optimum sampling phase. Symbol timing is then determined based on the relative peak offset in the best downsampled phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.