Title:
TRANSMISSION CHARACTERISTIC COMPENSATION DEVICE, TRANSMISSION CHARACTERISTIC COMPENSATION METHOD, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/217217
Kind Code:
A1
Abstract:
In the present invention a reception circuit (5) has a first adaptive compensation unit (7) that compensates for distortion in a received signal. An adaptive compensation coefficient calculation unit (6) has: a known signal detection unit (8) that detects first and second known signals from the received signal; a second adaptive compensation unit (10) that compensates for distortion in the received signal; a tap coefficient initial value calculation unit (12) that calculates an initial value for a tap coefficient of the second adaptive compensation unit (10) on the basis of a comparison of the first known signal and a true value thereof; a first phase fluctuation compensation unit (14) that uses the second known signal to compensate for phase fluctuation in the output from the second adaptive compensation unit; and a tap coefficient calculation unit (16) that calculates a tap coefficient for the first and second adaptive compensation units (7, 10) on the basis of a comparison of at least one of the first and second known signals that have been compensated by the second adaptive compensation unit (10) and the first phase fluctuation compensation unit (14), and true values thereof.
Inventors:
TAKAMUKU TOMOHIRO (JP)
YAMAZAKI ETSUSHI (JP)
OYAMA KATSUICHI (JP)
ONUMA YASUHARU (JP)
TAKEI KAZUHITO (JP)
NAKAMURA MASANORI (JP)
YOSHIDA MITSUTERU (JP)
TOMIZAWA MASAHITO (JP)
KISAKA YOSHIAKI (JP)
YAMAZAKI ETSUSHI (JP)
OYAMA KATSUICHI (JP)
ONUMA YASUHARU (JP)
TAKEI KAZUHITO (JP)
NAKAMURA MASANORI (JP)
YOSHIDA MITSUTERU (JP)
TOMIZAWA MASAHITO (JP)
KISAKA YOSHIAKI (JP)
Application Number:
PCT/JP2017/019756
Publication Date:
December 21, 2017
Filing Date:
May 26, 2017
Export Citation:
Assignee:
NTT ELECTRONICS CORP (JP)
NIPPON TELEGRAPH & TELEPHONE (JP)
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04B10/2507; H04B3/10; H04B10/61; H04L27/01
Foreign References:
JP2001285146A | 2001-10-12 | |||
JP2014195149A | 2014-10-09 | |||
JP2014060708A | 2014-04-03 |
Other References:
See also references of EP 3432488A4
Attorney, Agent or Firm:
TAKADA, Mamoru et al. (JP)
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