Title:
RECEIVER AND PROPAGATION PATH ESTIMATION METHOD
Document Type and Number:
WIPO Patent Application WO/2007/139026
Kind Code:
A1
Abstract:
[PROBLEMS] To provide an extrapolation method for suppressing degradation
of characteristic of propagation path estimation. [MEANS FOR SOLVING PROBLEMS]
A receiver (100) includes: a fast Fourier transform (FFT unit) (101) for subjecting
a multi-carrier symbol modulated by a known code to the fast Fourier transform
so as to calculate first frequency information on each sub-carrier; a division
unit for complex-dividing the first frequency information by the known code
so as to calculate second frequency information on each sub-carrier; a sub-carrier
interpolation unit (103) for generating interpolation frequency information
by calculating [1] an amplitude value at which the amplitude values of a plurality
of information to be interpolated are identical and [2] one of the phase differences
equal to a phase difference of a signal point between two sub-carriers as a phase
difference of a plurality of information to be interpolated or a combination
of them, and interpolating to second frequency information so as to calculate
third frequency information; and an inverse fast Fourier transform unit (IFFT
unit) (104) for subjecting the third frequency information to the inverse fast
Fourier transform.
Inventors:
NANBA, Hideo (())
難波 秀夫 (())
HAMAGUCHI, Yasuhiro (())
難波 秀夫 (())
HAMAGUCHI, Yasuhiro (())
Application Number:
JP2007/060719
Publication Date:
December 06, 2007
Filing Date:
May 25, 2007
Export Citation:
Assignee:
Sharp Kabushiki Kaisha (22-22, Nagaike-cho Abeno-ku, Osaka-sh, Osaka 22, 5458522, JP)
シャープ株式会社 (〒22 大阪府大阪市阿倍野区長池町２２番２２号 Osaka, 5458522, JP)
NANBA, Hideo (())
難波 秀夫 (())
シャープ株式会社 (〒22 大阪府大阪市阿倍野区長池町２２番２２号 Osaka, 5458522, JP)
NANBA, Hideo (())
難波 秀夫 (())
International Classes:
H04J11/00; H04B7/005; H04J11/00; H04B7/005
Attorney, Agent or Firm:
FUKUCHI, Takeo (3-1 Sakuragaoka-cho, Shibuya-ku Tokyo, 31, 1500031, JP)
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