Adaptive orthogonal frequency division multiplexing (OFDM) equalizers, OFDM receivers including the same, and methods thereof
US7864836B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2007 |
| Grant date | Jan 4, 2011 |
| Priority date | — |
| Expiry date | Jul 28, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03808
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An orthogonal frequency division multiplexing (OFDM) equalizer includes a memory that stores OFDM frame information, a partial sum calculator configured to calculate a partial sum of a data cell corresponding to an OFDM reception signal based on a current pilot cell and a fixing coefficient corresponding to the current pilot cell, an adapting coefficient calculator configured to calculate a channel response of the data cell and calculate an adapting coefficient based on the calculated channel response and an interpolated channel response, an interpolated channel response calculator configured to calculate the interpolated channel response based on the partial sum and the adapting coefficient, and a channel compensation unit configured to output a corrected OFDM reception signal based on the fast Fourier transformed OFDM reception signal and the interpolated channel response. Related receivers and channel equalization methods are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.