Invention Grant
US09231811B2 Receiver device, transmit/receive terminal, propagation delay time measurement method and computer program
有权
接收设备,发射/接收终端,传播延迟时间测量方法和计算机程序
- Patent Title: Receiver device, transmit/receive terminal, propagation delay time measurement method and computer program
- Patent Title (中): 接收设备,发射/接收终端,传播延迟时间测量方法和计算机程序
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Application No.: US14416906Application Date: 2013-04-24
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Publication No.: US09231811B2Publication Date: 2016-01-05
- Inventor: Takashi Mochizuki , Masahiro Tsuboshima
- Applicant: NEC Corporation
- Applicant Address: JP Tokyo
- Assignee: NEC CORPORATION
- Current Assignee: NEC CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Young & Thompson
- Priority: JP2012-166904 20120727
- International Application: PCT/JP2013/062124 WO 20130424
- International Announcement: WO2014/017137 WO 20140130
- Main IPC: H04L27/26
- IPC: H04L27/26 ; H04L25/02 ; G01R23/16 ; H04J11/00 ; H04W56/00

Abstract:
A receiver device is provided with: channel estimation unit which obtains channel estimation values for a frequency domain on the basis of pilot symbols disposed in an OFDM subcarrier; interpolation unit which performs interpolation so that the number of samples of channel estimation values obtained by the channel estimation unit is a power of 2; transformation unit which transforms the channel estimation values interpolated by the interpolation unit into a time domain to obtain a delay profile; and power peak position detection unit which detects a power peak position of the delay profile so as to obtain a propagation delay time. The power peak position detection unit references the signal power of the portion interpolated by the interpolation unit in order to detect a suitable power peak position in the delay profile.
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