Invention Grant
- Patent Title: OFDM demodulating apparatus and method
- Patent Title (中): OFDM解调装置及方法
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Application No.: US11489161Application Date: 2006-07-19
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Publication No.: US07701841B2Publication Date: 2010-04-20
- Inventor: Hidetoshi Kawauchi , Toshihisa Hyakudai , Takuya Okamoto , Atsushi Yajima , Taku Yamagata , Kazutaka Yamamoto , Shigenari Kawabata
- Applicant: Hidetoshi Kawauchi , Toshihisa Hyakudai , Takuya Okamoto , Atsushi Yajima , Taku Yamagata , Kazutaka Yamamoto , Shigenari Kawabata
- Applicant Address: JP
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP
- Agency: Lerner, David, Littenberg, Krumholz & Mentlik, LLP
- Priority: JPP2005-208679 20050719
- Main IPC: H04J11/00
- IPC: H04J11/00

Abstract:
An orthogonal frequency division multiplexing (OFDM) demodulating apparatus includes a delay profile creating section, a Fourier converting section, a pilot signal extracting section, a transmission path characteristic estimating section, an inverse Fourier converting section, and a window control section. In this case, the window control section creates a delay profile for defining a calculation range by leaving a path which exists at a same position in both the delay profiles created by the delay profile creating section and the inverse Fourier converting section and the number of times of detection which is equal to or higher than a threshold value and defines a higher threshold value for the path at a predetermined position from the position of the main path within the delay profile created by the inverse Fourier converting section than for the paths at the other positions.
Public/Granted literature
- US20070070882A1 OFDM demodulating apparatus and method Public/Granted day:2007-03-29
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