GB1455712A - Methods of testing the transmission quality of a telecommuni cations transmission system - Google Patents
Methods of testing the transmission quality of a telecommuni cations transmission systemInfo
- Publication number
- GB1455712A GB1455712A GB5235373A GB5235373A GB1455712A GB 1455712 A GB1455712 A GB 1455712A GB 5235373 A GB5235373 A GB 5235373A GB 5235373 A GB5235373 A GB 5235373A GB 1455712 A GB1455712 A GB 1455712A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signal
- channel
- testing
- comparison unit
- received signal
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/16—Monitoring arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/14—Monitoring arrangements
Abstract
1455712 Testing a telecommunication channel SIEMENS-ALBIS AG 12 Nov 1973 [6 Dec 1972] 52353/73 Heading G1U In a method of testing a telecommunications channel, a test signal which covers the entire dynamic range of the channel is injected into the transmitter, and the resulting signal S1, Figs. 2 and 3, at the receiver is passed via a monitoring network N to a comparison unit P where it is compared K with a signal S6 derived from itself. As described a bi-polar exponentially decaying signal is applied to the channel and for a perfect channel the received signal S1, Fig. 3a, will be identical to the transmitted signal, whilst for an imperfect channel the received signal S1, Fig. 3b, will exhibit deformities. The received signal S1 is integrated 1, Fig. 2, and inverted V1, the result is added A to the received signal, and the sum signal S3 is filtered H 1 and rectified G to produce a signal S5 which is fed to the comparison unit P. For a perfect channel the signal S5 should be constant as shown in Fig. 3a, but for an imperfect system it will contain irregularities as shown in Fig. 3b. The presence of such irregularities is detected, in the comparison unit, by comparing the signal S5 with a signal S6 obtained by subtracting D the high frequency components of the signal S5 from itself, and the resulting signal S7 is indicative of the overall quality of the channel.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1777272A CH549909A (en) | 1972-12-06 | 1972-12-06 | METHOD FOR MEASURING AND / OR MONITORING THE TRANSMISSION QUALITY OF A MESSAGE TRANSMISSION SYSTEM. |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1455712A true GB1455712A (en) | 1976-11-17 |
Family
ID=4427995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5235373A Expired GB1455712A (en) | 1972-12-06 | 1973-11-12 | Methods of testing the transmission quality of a telecommuni cations transmission system |
Country Status (14)
Country | Link |
---|---|
JP (1) | JPS4989410A (en) |
AT (1) | AT346970B (en) |
AU (1) | AU459959B2 (en) |
BE (1) | BE808303A (en) |
CH (1) | CH549909A (en) |
DE (1) | DE2339981C3 (en) |
FI (1) | FI58241C (en) |
FR (1) | FR2210060B1 (en) |
GB (1) | GB1455712A (en) |
IL (1) | IL43753A (en) |
IT (1) | IT1012536B (en) |
NL (1) | NL159249B (en) |
NO (1) | NO137711C (en) |
SE (1) | SE388095B (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994000941A1 (en) * | 1992-06-30 | 1994-01-06 | H. Heuer Instruments Pty. Ltd. | Margin test apparatus for integrated services digital networks |
EP0644674A2 (en) * | 1993-09-22 | 1995-03-22 | Ascom Infrasys AG | Method of transmission quality estimation of a speech transmission link |
AU669538B2 (en) * | 1992-06-30 | 1996-06-13 | H. Heuer Instruments Pty Ltd | Margin test apparatus for integrated services digital networks |
US5867813A (en) * | 1995-05-01 | 1999-02-02 | Ascom Infrasys Ag. | Method and apparatus for automatically and reproducibly rating the transmission quality of a speech transmission system |
WO2001067628A2 (en) * | 2000-03-07 | 2001-09-13 | Board Of Regents, The University Of Texas System | Methods for transmitting a waveform having a controllable attenuation and propagation velocity |
US6847267B2 (en) | 2000-03-07 | 2005-01-25 | Board Of Regents, The University Of Texas System | Methods for transmitting a waveform having a controllable attenuation and propagation velocity |
US7375602B2 (en) | 2000-03-07 | 2008-05-20 | Board Of Regents, The University Of Texas System | Methods for propagating a non sinusoidal signal without distortion in dispersive lossy media |
US8867657B1 (en) | 2014-02-17 | 2014-10-21 | Board Of Regents, The University Of Texas System | Communication using analog pulses having exponentially-shaped leading edges |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1209192B (en) * | 1980-02-18 | 1989-07-16 | Sits Soc It Telecom Siemens | MEASUREMENT SYSTEM FOR MULTIPLE PAM ELEMENTS OF AN ELECTRONIC SWITCHING UNIT FOR TELECOMMUNICATIONS. |
US4797735A (en) * | 1985-07-04 | 1989-01-10 | Matsushita Electric Industrial Co., Ltd. | Distortion surveillance apparatus for television signal transmission system |
JPH0612898B2 (en) * | 1987-03-24 | 1994-02-16 | 三菱電機株式会社 | Telemetry method of transmission quality |
JPH0611136B2 (en) * | 1987-03-24 | 1994-02-09 | 三菱電機株式会社 | Telemetry method of transmission quality |
-
1972
- 1972-12-06 CH CH1777272A patent/CH549909A/en not_active IP Right Cessation
-
1973
- 1973-06-28 FI FI2079/73A patent/FI58241C/en active
- 1973-08-07 DE DE2339981A patent/DE2339981C3/en not_active Expired
- 1973-11-09 AT AT946973A patent/AT346970B/en not_active IP Right Cessation
- 1973-11-12 GB GB5235373A patent/GB1455712A/en not_active Expired
- 1973-11-22 AU AU62807/73A patent/AU459959B2/en not_active Expired
- 1973-11-29 JP JP48133980A patent/JPS4989410A/ja active Pending
- 1973-12-03 FR FR7342967A patent/FR2210060B1/fr not_active Expired
- 1973-12-03 NO NO734605A patent/NO137711C/en unknown
- 1973-12-04 IL IL43753A patent/IL43753A/en unknown
- 1973-12-05 NL NL7316674.A patent/NL159249B/en unknown
- 1973-12-05 SE SE7316418A patent/SE388095B/en unknown
- 1973-12-06 BE BE138586A patent/BE808303A/en unknown
- 1973-12-27 IT IT32136/73A patent/IT1012536B/en active
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994000941A1 (en) * | 1992-06-30 | 1994-01-06 | H. Heuer Instruments Pty. Ltd. | Margin test apparatus for integrated services digital networks |
AU669538B2 (en) * | 1992-06-30 | 1996-06-13 | H. Heuer Instruments Pty Ltd | Margin test apparatus for integrated services digital networks |
US5663968A (en) * | 1992-06-30 | 1997-09-02 | H. Heuer Instruments Pty Ltd. | Margin test method and apparatus for intergrated services digital networks |
EP0644674A2 (en) * | 1993-09-22 | 1995-03-22 | Ascom Infrasys AG | Method of transmission quality estimation of a speech transmission link |
EP0644674A3 (en) * | 1993-09-22 | 1996-11-20 | Ascom Infrasys Ag | Method of transmission quality estimation of a speech transmission link. |
US5867813A (en) * | 1995-05-01 | 1999-02-02 | Ascom Infrasys Ag. | Method and apparatus for automatically and reproducibly rating the transmission quality of a speech transmission system |
US6847267B2 (en) | 2000-03-07 | 2005-01-25 | Board Of Regents, The University Of Texas System | Methods for transmitting a waveform having a controllable attenuation and propagation velocity |
WO2001067628A3 (en) * | 2000-03-07 | 2003-09-04 | Univ Texas | Methods for transmitting a waveform having a controllable attenuation and propagation velocity |
WO2001067628A2 (en) * | 2000-03-07 | 2001-09-13 | Board Of Regents, The University Of Texas System | Methods for transmitting a waveform having a controllable attenuation and propagation velocity |
US7375602B2 (en) | 2000-03-07 | 2008-05-20 | Board Of Regents, The University Of Texas System | Methods for propagating a non sinusoidal signal without distortion in dispersive lossy media |
US7859271B2 (en) | 2000-03-07 | 2010-12-28 | Board Of Regents, The University Of Texas | Methods for propagating a non sinusoidal signal without distortion in dispersive lossy media |
US8093911B2 (en) | 2000-03-07 | 2012-01-10 | Board Of Regents, The University Of Texas | Time-of-flight measurement based on transfer function and simulated exponential stimulus |
EP1540844A2 (en) * | 2002-08-20 | 2005-06-15 | Board Of Regents The University Of Texas System | Methods for transmitting a waveform having a controllable attenuation and propagation velocity |
EP1540844A4 (en) * | 2002-08-20 | 2009-12-23 | Univ Texas | Methods for transmitting a waveform having a controllable attenuation and propagation velocity |
US8867657B1 (en) | 2014-02-17 | 2014-10-21 | Board Of Regents, The University Of Texas System | Communication using analog pulses having exponentially-shaped leading edges |
US8923444B1 (en) | 2014-02-17 | 2014-12-30 | Board Of Regents, The University Of Texas System | Decoding a communication signal that contains analog pulses with exponentially-shaped leading edges |
Also Published As
Publication number | Publication date |
---|---|
DE2339981C3 (en) | 1980-05-14 |
NL159249B (en) | 1979-01-15 |
NO137711C (en) | 1978-04-12 |
FI58241B (en) | 1980-08-29 |
CH549909A (en) | 1974-05-31 |
AT346970B (en) | 1978-12-11 |
ATA946973A (en) | 1978-04-15 |
FI58241C (en) | 1980-12-10 |
SE388095B (en) | 1976-09-20 |
AU6280773A (en) | 1975-04-10 |
FR2210060A1 (en) | 1974-07-05 |
IL43753A (en) | 1976-05-31 |
AU459959B2 (en) | 1975-04-10 |
DE2339981A1 (en) | 1974-07-04 |
JPS4989410A (en) | 1974-08-27 |
NO137711B (en) | 1977-12-27 |
BE808303A (en) | 1974-06-06 |
FR2210060B1 (en) | 1978-02-10 |
IT1012536B (en) | 1977-03-10 |
IL43753A0 (en) | 1974-03-14 |
NL7316674A (en) | 1974-06-10 |
DE2339981B2 (en) | 1979-08-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |