Title:
MODULATION DEVICE AND DEMODULATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/217941
Kind Code:
A1
Abstract:
Provided is a modulation device which performs high-efficiency multiplexing of a pilot signal used in equalization and estimation of phase noise in LOS-MIMO which uses a single carrier signal. The modulation device (10) is a modulation device used in a Line Of Sight-Multiple Input Multiple Output (LOS-MIMO) wireless communication system. The modulation device (10) comprises: a means (11) for transforming a pilot signal series of a time domain into a first number of frequency domain signals corresponding to the series length of said pilot signal series; a means (12) for shifting the leading mapping position by one subcarrier at a time in such a manner that the first number of frequency domain signals do not overlap with one another, and mapping the number of transmission antennas of the host device at subcarrier intervals; and a means (13) for transforming a mapped frequency domain signal into a time domain signal.
Inventors:
KAMIYA NORIFUMI (JP)
SAWAHASHI MAMORU (JP)
SAWAHASHI MAMORU (JP)
Application Number:
PCT/JP2020/015458
Publication Date:
October 29, 2020
Filing Date:
April 06, 2020
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04J13/22; H04B7/0413; H04B7/0426; H04J99/00; H04L27/26
Domestic Patent References:
| WO2017183631A1 | 2017-10-26 |
Foreign References:
| JP2011529290A | 2011-12-01 | |||
| JP2011160396A | 2011-08-18 | |||
| JP2004274117A | 2004-09-30 | |||
| JP2005124125A | 2005-05-12 | |||
| JP2008028515A | 2008-02-07 | |||
| JP2016092454A | 2016-05-23 |
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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