System and method for reducing interference in an orthogonal frequency division modulation system
US7876868B2 · kind B2 · utility
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4References
19Claims
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Key dates
| Filing date | Jan 9, 2007 |
| Grant date | Jan 25, 2011 |
| Priority date | — |
| Expiry date | May 1, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2647
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An interference contribution associated with a selected subcarrier of a plurality of subcarriers associated with a previously transmitted OFDM symbol or a current OFDM symbol is determined. A fast Fourier transform (FFT) output for the current OFDM symbol is also determined. The interference contribution is subtracted from the FFT output of the current OFDM symbol to form a modified FFT output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.