Title:
DIGITAL DELAY INTERPOLATION SIGNAL GENERATION METHOD AND ITS APPARATUS
Document Type and Number:
Japanese Patent JP2009171101
Kind Code:
A
Abstract:
To generate the digital delay interpolation signals of the time shorter than a sample cycle as the ones for a fading simulator.
When A/D converting signals in a cycle (low sample cycle) longer than the minimum delay time (delay resolution), digitally interpolating the amplitude value of the cycle equivalent to the minimum delay time and obtaining signals sampled in the minimum delay time, by digitally interpolating sample values a-e of an original sample point using a Nyquist filter, the digital delay interpolation signals having the delay time shorter than the sample cycle Ts can be generated at a new sample point A.
Inventors:
YAGI MASAHIRO
MICHIJIMA FUTOSHI
KIMURA KIMIO
MICHIJIMA FUTOSHI
KIMURA KIMIO
Application Number:
JP2008005601A
Publication Date:
July 30, 2009
Filing Date:
January 15, 2008
Export Citation:
Assignee:
JAPAN RADIO CO LTD
International Classes:
H04B17/00; H04L27/00
Domestic Patent References:
| JP2004260774A | 2004-09-16 | |||
| JPH11330913A | 1999-11-30 | |||
| JPS63296512A | 1988-12-02 |
Attorney, Agent or Firm:
Takehiro Chiba
Toshiyuki Miyadera
Naoki Kashima
Yasuo Takubo
Shuji Ouchi
Toshiyuki Miyadera
Naoki Kashima
Yasuo Takubo
Shuji Ouchi