Reduced complexity FFT window synchronization for an orthogonal frequency division multiplexing system
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United States of America Patent
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Nov 18, 2003
Grant Date -
N/A
app pub date -
Feb 22, 2000
filing date -
Feb 22, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An Orthogonal Frequency Division Multiplexing (OFDM) receiver that compensates for FFT window drift by extracting pilots from a fast Fourier transformed and equalized OFDM signal, and processing the extracted pilots to derive an FFT window adjustment factor and an associated equalizer tap adjustment value. The OFDM receiver simultaneously controls the position of an FFT window and the phase of equalizer taps using the derived FFT adjustment factor and equalizer tap adjustment value.
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