Title:
PULSE RADIO RECEIVER
Document Type and Number:
WIPO Patent Application WO/2007/102398
Kind Code:
A1
Abstract:
A pulse radio receiver not needing re-setting of the threshold for reception synchronization,
judging the direction and amount of adjustment of the synchronization even if
the signal strength varies, and having a shortened pull-in time of the synchronization
position. The receiver comprises a detecting section (104) for creating a detection
signal (105), a synchronizing waveform generating section (160) for generating
a reference waveform signal (111), a delay section (161) for generating delayed
waveform signals by delaying the reference waveform signal (111) with different
delay times, a correlation computing section (162) for parallel generating
correlation value signals representing the correlation values between the
detection signal (105), and the reference waveform signal (111) and its delayed
reference waveform signals, a judging section (163) for generating a difference
detection signal (141) representing the direction and amount of the phase error
from the magnitude relation corresponding to the combination of the correlation
values represented by the correlation value signals, and a synchronization
control section (142) for generating a control signal (143) for controlling
the phase of the reference waveform signal (111) according to the difference
detection signal (141) and outputting the control signal (143) into the synchronizing
waveform generating section (160).
Inventors:
FUJITA SUGURU
MIMURA MASAHIRO
TAKAHASHI KAZUAKI
SAKAMOTO TAKENORI
MIMURA MASAHIRO
TAKAHASHI KAZUAKI
SAKAMOTO TAKENORI
Application Number:
PCT/JP2007/053932
Publication Date:
September 13, 2007
Filing Date:
March 01, 2007
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
FUJITA SUGURU
MIMURA MASAHIRO
TAKAHASHI KAZUAKI
SAKAMOTO TAKENORI
FUJITA SUGURU
MIMURA MASAHIRO
TAKAHASHI KAZUAKI
SAKAMOTO TAKENORI
International Classes:
H04B1/7183; H04J13/00; H04L25/49; H04L27/00
Domestic Patent References:
| WO2004009339A1 | 2004-01-29 |
Foreign References:
| JP2004241927A | 2004-08-26 | |||
| JP2005130295A | 2005-05-19 |
Attorney, Agent or Firm:
WASHIDA, Kimihito (Shintoshicenter Bldg. 24-1, Tsurumaki 1-chom, Tama-shi Tokyo 34, JP)
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