Computation reduction in OFDM system using frequency domain processing
US7072411B1 · kind B1 · utility
26Cited by
5References
20Claims
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Key dates
| Filing date | Dec 4, 2001 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Dec 7, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2651
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Improved systems and methods for implementing Orthogonal Frequency Division Multiplexing (OFDM) systems and for computing Fast Fourier Transforms (FET) having strictly real outputs are provided. Systems and methods are provided for efficiently implementing an Inverse Fast Fourier Transform (IFFT) with complex inputs and real outputs. Filtering and upconversion are performed in the frequency domain to simplify digital time domain processing and generally reduce complexity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.