Invention Grant
- Patent Title: OFDM receiving method and OFDM receiving apparatus
- Patent Title (中): OFDM接收方法和OFDM接收装置
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Application No.: US10792515Application Date: 2004-03-02
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Publication No.: US07693035B2Publication Date: 2010-04-06
- Inventor: Tsuyoshi Hasegawa , Takashi Dateki
- Applicant: Tsuyoshi Hasegawa , Takashi Dateki
- Applicant Address: JP Kawasaki
- Assignee: Fujitsu Limited
- Current Assignee: Fujitsu Limited
- Current Assignee Address: JP Kawasaki
- Agency: Katten Muchin Rosenman LLP
- Main IPC: H04J11/00
- IPC: H04J11/00 ; H04L12/28 ; H04L27/00

Abstract:
In an OFDM receiving apparatus for receiving a signal that has undergone Orthogonal Frequency Division Multiplexing (OFDM) and applying FFT processing to the receive signal to demodulate transmit data, an OFDM symbol comprising a fixed number of items of sample data is extracted from a receive signal, a position at which FFT processing of the OFDM symbol starts is shifted based upon the state of multipath and FFT processing is executed from the position to which the shift has been made. For example, a channel estimation value is obtained from result of FFT processing of known data contained in the receive signal, a multipath delay profile is obtained by applying FFT processing to this channel estimation value, and the position at which the FFT processing begins is decided based upon the position of a path for which power is maximized among the delay profiles.
Public/Granted literature
- US20040228272A1 OFDM receiving method and OFDM receiving apparatus Public/Granted day:2004-11-18
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