Title:
RADIO RECEPTION CIRCUIT, RADIO RECEPTION METHOD, AND RADIO RECEPTION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2015/008802
Kind Code:
A1
Abstract:
[Problem] To provide a radio reception circuit and the like that allow for preventing the S/N ratio from being degraded due to the spurious of high-output adjacent-channel signals. [Solution] A radio reception circuit (1) comprises: a variable bandpass filter (2) for passing one of received signals that has a particular frequency and that is of a particular bandwidth; a demodulation circuit (3) for demodulating the received signal having passed through the variable bandpass filter, thereby outputting an ultimate output signal; a frequency characteristic table (4) that stores a plurality of different parameters about frequencies and bandwidths in advance; an S/N ratio measurement circuit (5) for calculating the S/N ratio of the output signal in a case where one of the plurality of different parameters is applied to the variable bandpass filter; and a control unit (6) for setting, to the variable bandpass filter, a parameter, for which the best S/N ratio can be obtained, out of the plurality of different parameters.
Inventors:
IGURA HIROYUKI (JP)
Application Number:
PCT/JP2014/068950
Publication Date:
January 22, 2015
Filing Date:
July 16, 2014
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04B1/10; H04B1/26
Foreign References:
| JP2009512273A | 2009-03-19 | |||
| JPS63269613A | 1988-11-07 | |||
| JP2010220146A | 2010-09-30 | |||
| JP2003283255A | 2003-10-03 |
Attorney, Agent or Firm:
TAKAHASHI ISAMU (JP)
Isamu Takahashi (JP)
Isamu Takahashi (JP)
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