JPS5553948A - Digital signal detection system - Google Patents
Digital signal detection systemInfo
- Publication number
- JPS5553948A JPS5553948A JP12739478A JP12739478A JPS5553948A JP S5553948 A JPS5553948 A JP S5553948A JP 12739478 A JP12739478 A JP 12739478A JP 12739478 A JP12739478 A JP 12739478A JP S5553948 A JPS5553948 A JP S5553948A
- Authority
- JP
- Japan
- Prior art keywords
- signals
- threshold level
- output
- data
- det
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
PURPOSE: To prevent the output phenomenon of the same number as before by deciding the presence of the signals through selection of one or two units of the larger output and at the same time judging the absence of the signals in other channels each in case the discrete Fourier conversion output exists in the range more than the prescribed fixed threshold level.
CONSTITUTION: The DET output calculated at the discrete Fourier conversion DET operation part is applied to the DET-OUT terminal. This data is then compared with the fixed threshold level stored in shift register 1. And in case the data is larger than the threshold level, the data stored in register 1 is transferred to shift registers 3 and 4 in the form of the comparison value. Then the smaller comparison value within registers 3 and 4 is detected to give the renewal to the contents of register 3 and 4. A comparison is given at comparator 14 between the input data and the threshold level to decide the presence or absence of the signals. And this comparison result is sent to the 2/3-majority circuit to have the final decision of the signals.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53127394A JPS5947907B2 (en) | 1978-10-18 | 1978-10-18 | Digital signal detection method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53127394A JPS5947907B2 (en) | 1978-10-18 | 1978-10-18 | Digital signal detection method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5553948A true JPS5553948A (en) | 1980-04-19 |
JPS5947907B2 JPS5947907B2 (en) | 1984-11-22 |
Family
ID=14958898
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53127394A Expired JPS5947907B2 (en) | 1978-10-18 | 1978-10-18 | Digital signal detection method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5947907B2 (en) |
-
1978
- 1978-10-18 JP JP53127394A patent/JPS5947907B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5947907B2 (en) | 1984-11-22 |
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