Radio apparatus and adaptive array processing method

Multiplex communications – Generalized orthogonal or special mathematical techniques – Fourier transform

Reexamination Certificate

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C375S346000, C455S063100, C342S378000

Reexamination Certificate

active

07423961

ABSTRACT:
A correlator detects arriving timings of a desired wave and an interfering wave from a signal transmitted by the OFDM scheme. A reception response vector estimator estimates a first response vector for a signal arriving within a guard interval section from the head arriving wave and a second response vector for a signal arriving after the guard interval section from the head arriving wave out of the desired wave, and also a third response vector for a signal arriving within the guard interval section from the head arriving wave and a fourth response vector for a signal arriving after the guard interval section from the head arriving wave out of the interfering wave. An adaptive array block provides a weight vector based on a result of Fourier transform on the first to fourth response vectors.

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Japanese Office Action, with English Translation, issued in Japanese Patent Application No. JP 2005-134200, mailed on Jan. 22, 2008.
Li, Ye (Geoffrey), “Adaptive Antenna for OFDM Systems With Cochannel Interference,” IEEE Transactions on Communications, vol. 47, No. 2, Feb. 1999, pp. 217-229.

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