Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2005-09-27
2008-11-25
Ahn, Sam K (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
Reexamination Certificate
active
07457384
ABSTRACT:
A derivation unit derives SNRs corresponding respectively to two repeated OFDM symbols having the same content. The derivation unit generates, from the derived SNRs, a control signal necessary for deriving weighting factors and then outputs this control signal as a combined control signal. An FFT unit performs FFT on a signal combined by a delay symbol synthesizing unit. An equalization unit performs equalization processing on subcarrier signals inputted from the FFT unit. While associating two weighting factors with OFDM symbols of the same content, a synthesis unit weights the OFDM symbols of the same content with the weighting factors and then combines the OFDM symbols of the same content among equalization data.
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Japanese Office Action, with English Translation, issued in corresponding Japanese Patent Application No. JP 2004-281036, mailed on Feb. 19, 2008.
Ahn Sam K
McDermott Will & Emery LLP
Sanyo Electric Co,. Ltd.
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