Title:
RADIO DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/180676
Kind Code:
A1
Abstract:
[Problem] To provide a radio device that can quickly and highly precisely determine whether there exists any radio interference and that further can send a notice of a risk in accordance with the degree of the radio interference, thereby improving safety. [Solution] This radio device determines whether there exists any radio interference occurring on a receiving side when a plurality of radio apparatuses use the same frequency to perform transmissions. A window processing unit 15 subjects a received signal having a carrier frequency as the center frequency to a window processing so as to perform following FFT processing in an optimum manner. A rate conversion unit 16 performs a rate conversion of the output signal from the window processing unit 15 by use of a high frequency, thereby outputting frames including a particular number of samples, while causing the frames to overlap each other. An FFT unit 17 performs the FFT processing of the output signal from the rate conversion unit 16 on a frame-by-frame basis, thereby outputting a relationship between the frequency and the level. A radio interference determination unit 18 detects the peaks of carriers outputted from the FFT unit 17, and determines a radio interference state when a plurality of peaks are detected.
Inventors:
NISHIDA JUNICHI (JP)
Application Number:
PCT/JP2021/006839
Publication Date:
September 01, 2022
Filing Date:
February 24, 2021
Export Citation:
Assignee:
HITACHI INT ELECTRIC INC (JP)
International Classes:
H04B17/309
Domestic Patent References:
| WO2018092581A1 | 2018-05-24 |
Foreign References:
| JP2012049768A | 2012-03-08 | |||
| JP2008061268A | 2008-03-13 |
Attorney, Agent or Firm:
FUNATSU, Nobuhiro (JP)
Download PDF: