Extracting the phase of an OFDM signal sample
US7760616B2 · kind B2 · utility
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10Claims
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Assignee
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Key dates
| Filing date | Jul 31, 2002 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | Aug 31, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2657
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The disclosed embodiments relate to exploiting circuitry that exists in a typical Orthogonal Frequency Division Multiplexing (OFDM) receiver to find the phase of a complex number corresponding to an input signal without implementing additional costly circuitry or employing a relatively slow inverse tangent look-up table. The magnitude of the complex number is normalized and processed through a closed loop to produce an output proportional to the phase of the complex number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.