JPS5124818A - - Google Patents
Info
- Publication number
- JPS5124818A JPS5124818A JP50063975A JP6397575A JPS5124818A JP S5124818 A JPS5124818 A JP S5124818A JP 50063975 A JP50063975 A JP 50063975A JP 6397575 A JP6397575 A JP 6397575A JP S5124818 A JPS5124818 A JP S5124818A
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/16—Monitoring arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2401374A GB1460513A (en) | 1974-05-30 | 1974-05-30 | Measurement of noise in a communication channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5124818A true JPS5124818A (ja) | 1976-02-28 |
Family
ID=10204984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50063975A Pending JPS5124818A (ja) | 1974-05-30 | 1975-05-28 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4032716A (ja) |
| JP (1) | JPS5124818A (ja) |
| CA (1) | CA1038512A (ja) |
| DE (1) | DE2523739A1 (ja) |
| FR (1) | FR2275943A1 (ja) |
| GB (1) | GB1460513A (ja) |
| IT (1) | IT1036123B (ja) |
| NL (1) | NL7506194A (ja) |
| SE (1) | SE403020B (ja) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4408322A (en) * | 1980-11-07 | 1983-10-04 | Satellite Business Systems | Method and apparatus for measuring signal to noise ratio in a TDMA communications system |
| US4768203A (en) * | 1987-09-18 | 1988-08-30 | Bell Communications Research, Inc. | Signal-to-noise ratio testing in adaptive differential pulse code modulation |
| JP3013408B2 (ja) * | 1990-08-17 | 2000-02-28 | ソニー株式会社 | 受信装置 |
| DE10014395A1 (de) * | 2000-03-23 | 2001-10-04 | Siemens Ag | Verfahren zur Signal-Stör-Verhältnisermittlung von über eine Funkschnittstelle eines Funk-Kommunikationssystems übertragenen Signalen |
| WO2013003301A1 (en) * | 2011-06-27 | 2013-01-03 | Trilithic, Inc. | Method for detecting leakage in digitally modulated systems |
| CN106162478B (zh) * | 2016-08-16 | 2019-08-06 | 北京小米移动软件有限公司 | 麦克风优选方法及装置 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2987586A (en) * | 1958-09-30 | 1961-06-06 | Bell Telephone Labor Inc | Cross-modulation measuring system |
| GB1264134A (ja) * | 1968-08-14 | 1972-02-16 | ||
| DE2000353C3 (de) * | 1969-02-04 | 1979-11-29 | Rai Radiotelevisione Italiana, Rom | Verfahren und Vorrichtung zur automatischen Messung des Rauschabstandes |
| US3691306A (en) * | 1970-07-02 | 1972-09-12 | Francesco Molo | Apparatus and process for detecting malfunctions in a frequency division multiplex system |
| CA999989A (en) * | 1972-12-14 | 1976-11-16 | Edgar R. Allen | Measurement of noise in a communication channel |
-
1974
- 1974-05-30 GB GB2401374A patent/GB1460513A/en not_active Expired
-
1975
- 1975-05-23 US US05/580,349 patent/US4032716A/en not_active Expired - Lifetime
- 1975-05-27 NL NL7506194A patent/NL7506194A/xx not_active Application Discontinuation
- 1975-05-28 IT IT68384/75A patent/IT1036123B/it active
- 1975-05-28 DE DE19752523739 patent/DE2523739A1/de active Pending
- 1975-05-28 JP JP50063975A patent/JPS5124818A/ja active Pending
- 1975-05-29 CA CA228,414A patent/CA1038512A/en not_active Expired
- 1975-05-30 FR FR7517078A patent/FR2275943A1/fr active Granted
- 1975-05-30 SE SE7506221A patent/SE403020B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE7506221L (sv) | 1975-12-01 |
| NL7506194A (nl) | 1975-12-02 |
| FR2275943B1 (ja) | 1979-03-23 |
| IT1036123B (it) | 1979-10-30 |
| CA1038512A (en) | 1978-09-12 |
| FR2275943A1 (fr) | 1976-01-16 |
| AU8141775A (en) | 1976-11-25 |
| GB1460513A (en) | 1977-01-06 |
| SE403020B (sv) | 1978-07-24 |
| US4032716A (en) | 1977-06-28 |
| DE2523739A1 (de) | 1975-12-04 |