Receiver and frequency information estimating method

Multiplex communications – Generalized orthogonal or special mathematical techniques – Particular set of orthogonal functions

Reexamination Certificate

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C370S210000, C375S260000

Reexamination Certificate

active

08000224

ABSTRACT:
A receiver100has a Fourier transform section105Fourier-transforming symbols for propagation path estimation including subcarriers modulated by known signals different for two or more antennas to calculate first frequency information, a multiplying section107multiplying the first frequency information by complex conjugate signals of two or more known codes to calculate second frequency information of each of the subcarriers, an interpolation information generating section121selecting partial information from the second frequency information on the basis of the known codes and generating interpolation frequency information interpolating the subcarriers using the selected information, a subcarrier interpolating section122interpolating the interpolation frequency information to the second frequency information to calculate third frequency information, and an inverse Fourier transform section109inverse-Fourier-transforming the third frequency information.

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Yokomakura et al., IEICE Technical Report, Aug. 18, 2005, vol. 105, No. 240, pp. 91-96.

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