WO2005125220A1 - Verfahren und vorrichtung zur bewertung der güte eines signals - Google Patents
Verfahren und vorrichtung zur bewertung der güte eines signals Download PDFInfo
- Publication number
- WO2005125220A1 WO2005125220A1 PCT/EP2005/004586 EP2005004586W WO2005125220A1 WO 2005125220 A1 WO2005125220 A1 WO 2005125220A1 EP 2005004586 W EP2005004586 W EP 2005004586W WO 2005125220 A1 WO2005125220 A1 WO 2005125220A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- quality
- evaluating
- reference value
- signal according
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/004—Diagnosis, testing or measuring for television systems or their details for digital television systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/12—Arrangements for observation, testing or troubleshooting
Definitions
- the invention relates to a method and a device for evaluating the quality of a signal, in particular a communications signal.
- DVD-T Digital Video Broadcasting Terrestrial
- OFDM signals orthogonal frequency division multiplexing signals
- the task of the field measurement is, for example with DVB-T, to detect the digital DVB-T transmission signal at any point in the network of the digital terrestrial TV broadcasting without distortion and on the basis of a digital one using several measured values of the received digital DVB-T transmission signal Measured value processing to determine predetermined parameters of the received digital DVB-T transmission signal. These parameters characterize the quality of the digital transmission signal and are used by a specialist in digital television technology for diagnostic and system or device acceptance purposes.
- test receivers are set up at different positions in the digital broadcasting network, which receive the digital DVB-T transmission signal at different times and use digital signal processing to determine the individual parameters and compare them with corresponding predetermined reference values. Is the characteristic value determined in each case within a certain previously defined tolerance range to the reference value, the digital DVB-T transmission signal can be correctly qualified with regard to the characteristic.
- a method in which such a qualification is carried out for a parameter of the signal, in particular with a time-varying reference value, is disclosed in DE 101 63 505 AI.
- the object of the invention is therefore to create a method and a device on the basis of measured parameters of a complex transmission signal, with which the quality of the complex transmission signal can be determined relatively easily and quickly.
- the method according to the invention determines the deviation of the measured parameter from a predetermined reference value for each parameter of the transmission signal and, for each deviation thus determined, normalizes with the maximum possible deviation of the parameter from its respective reference value.
- the standardization of the individual dimensional deviations enables a subsequent, uniform mathematical treatment of all deviations that have become dimensionless due to the standardization.
- the influence of a parameter and its deviation from the respective reference value on the quality of the complex transmission signal can be set individually via weighting factors.
- the quality of the complex transmission signal is determined by averaging the weighted and standardized deviations.
- the maximum possible deviation of a characteristic variable from its reference value results from the maximum deviation of the reference value from the upper or lower signal range limit, both of which are previously determined.
- the deviations are determined by forming the difference between the reference value and the measured parameter - in the case of the maximum deviation by forming the difference between the reference value and the upper or lower signal range limit - and then forming the amount. This ensures that positive deviations flow into the further averaging even in the case of negative differences or in the case of negative parameters.
- the measured parameter for evaluation is limited to the upper or lower signal range limit in the method according to the invention. It is thus achieved that by the subsequent Normalization of the respective deviation the normalized deviation within the normalized range between +. 1 comes to rest.
- the evaluation of the individual standardized deviations from each other by means of weighted averaging can be linear, quadratic, logarithmic or exponential depending on the type of characteristic.
- test test receivers are distributed in the network of digital terrestrial TV broadcasting and transmit their received DVB-T transmission signals to a main computer for further processing via standard data transmission interfaces.
- a test measurement receiver which is directly coupled to the main computer.
- 1A, 1B is a block diagram of a first and second embodiment of the inventive device for evaluating the quality of a signal
- 2 shows a flow chart of the method according to the invention for determining the quality of a signal
- Fig. 4 is a graphical representation of the results determined by the inventive method (part 2).
- the device according to the invention for evaluating the quality of a signal in its first embodiment in FIG. 1A consists of a plurality of test test receivers 10, 20, 30, 40, for example the test test receiver EFA manufactured by Rohde & Schwarz, which at individual positions in the Digital terrestrial TV broadcasting network - DVB-T - are installed.
- Each individual test measuring receiver 10, 20, 30, 40 measures the individual parameters of the DVB-T transmission signal.
- the measured values in the individual test test receivers 10, 20, 30, 40 are queried by a main computer 50 via remote control or remote polling on the basis of standard data transmission interfaces 60, for example RS 232 or IEC bus interfaces, and accordingly Processed and visualized inventive methods.
- the visualization takes place via a graphic display device 70 connected to the main computer 50 via a visualization interface 80.
- the graphic display device 70 also serves the user as an input medium for setting parameters and for controlling the entire method according to the invention.
- test measurement receiver 10 In the second embodiment of the device according to the invention for evaluating the quality of a signal in FIG. 1B, there is only one test measurement receiver 10, which is coupled directly to the main computer 50 without remote control.
- main computer 50 is only available for further processing in accordance with the method according to the invention, in this case a data record of parameters which have been read in.
- the test measuring receiver 10, the main computer 50 and the display device 70 can also be integrated in a common housing.
- test measurement receivers 10, 20, 30, 40 are used to carry out the usual measurement data preprocessing functions, for example filtering, averaging, analog-digital conversion, etc., using the detected parameters X.
- the method according to the invention for evaluating the quality Qs of a signal begins in accordance with FIG. 2 with method step S10, in which the parameters X ⁇ previously determined for evaluating the quality Q s of the signal of one Test measuring receivers 10, 20, 30, 40 can be read.
- the user can unlock or block certain parameters X t from the maximum number of read-in parameters X n for further processing according to the inventive method via a control option in the main computer 50.
- the user has a check box available for each defined parameter via the visualization interface 80.
- step S30 the user determines a reference value in X ⁇ .. for each defined and activated parameter X L. This results, for example, from the specifications of the transmission standards, for example the modulation method used, or from the quality requirements desired by the operator of the digital TV broadcasting. Since these reference values X ..-. Each individual parameter X. of the transmission signal does not necessarily have to represent fixed values, the user can use the visualization Interface 80 from previously defined reference value sets the reference value ⁇ suitable for the test measurement. Select X i for each individual parameter and modify if necessary.
- the user can create a pair of data Xupi for each individual parameter X. in a specific test measurement from previously defined data sets. and select X, Iowa .. for the upper and lower signal range limits. If the read-in and released parameter X. lies outside the signal range, then the parameter X i is increased to the value of the upper signal range limit X up in step S40 according to equation (1). set if the parameter X. is greater than the upper signal range limit X up . is set to the value of the lower signal range limit X lowi if the parameter X. is less than the lower signal range limit
- the method according to the invention signals this to the user via the visualization interface 80, for example by identifying the parameter X L with the color red.
- the subsequent method step S50 includes the calculation of the deviation ⁇ X for each parameter X. the read-in and activated parameter X. from its reference value X Ref . by forming the difference X. from the associated reference value X ⁇ .. according to equation (2). Since a positive deviation is to be aimed for for a uniform mathematical further treatment of each individual deviation, in addition to forming the difference, an amount is formed in step S50. On In this way, negative differences - for example differences between the noise reference level and the measured noise level - or parameters with negative values - for example negative signal levels - always lead to positive deviations.
- step S60 of the method according to the invention standardization of the individual deviations ⁇ X £ is to be carried out.
- the standardization ensures that all the deviations ⁇ X. can be further processed uniformly in the following method steps of the method according to the invention.
- the maximum possible deviation ⁇ X iMAX is used as a reference for standardizing the deviations ⁇ X. According to equation (3), this results from the maximum value of the deviation ⁇ X.
- step S70 the different meaning of differently large deviations of a parameter X. to their respective reference value X Re £ i on the quality Q s of a signal is taken into account.
- the user has a range of evaluation functions, for example linear, quadratic, exponential and logarithmic evaluation.
- the measured parameter X L corresponds to its reference value X Ref .
- a value of 0 results for the standardized deviation ⁇ X. according to equation (4), while in the worst case the maximum deviation ⁇ X iMax of the measured parameter X i to its reference value X Ref .
- the standardized deviation ⁇ X. has a value of 1 according to equation (4). But since there is a maximum deviation ⁇ X. Max of a parameter X from its reference value X-. efi makes a minimal contribution P. of the parameter X.
- Error function is calculated is a typical parameter
- X ⁇ for a logarithmic evaluation.
- the logarithmic evaluation is thus used, for example, for the following parameters X i :
- a weighting factor G L from a predetermined set of weighting factors G L i of the characteristic value X L for every post.
- This weighting factor G L can be selected by the user via the visualization interface 80 from the previously defined set of weighting factors G £ and modified if necessary.
- the individual weighting factors G £ determine the respective contribution P ⁇ of the individual parameter X L for determining the quality Q s of the signal. If, for example, several parameters X j ⁇ are used for the determination of the quality Q s of the signal, which are similar or related in terms of content, they are each evaluated with a lower weighting factor G £ , not to consider the aspect of the related parameters X. overestimate the aspects represented by the other parameters X.
- the method step S90 includes the calculation of the quality Q s of the signal. According to equation (7), this results from the weighting of the contributions P x of all n read-in and activated parameters X ⁇ with the respectively selected weighting factors G ⁇ and. Calculated by means of equations (5a), (5b), (5c) and (5d) subsequent averaging.
- Equation (8a) The degree of fulfillment E 1 of a parameter X x results from equation (8a) for the linear evaluation, according to equation (8b) for the quadratic evaluation, according to equation (8c) for the logarithmic evaluation and according to equation (8d) for the exponential evaluation Multiply equations (5a), (5b), (5c) and (5d) by 100%.
- step S100 the determined results are visualized graphically on the graphic display device 70.
- Fig. 3 several parameters X x are shown graphically as an example.
- the verbal designation or the abbreviation of the respective parameter X ⁇ is listed.
- the measured value of the respective parameter X ⁇ is represented as a numerical value with the associated dimension and at the same time by a color value which corresponds to the degree of fulfillment E ⁇ of the measured parameter X x according to equations (8a) to (8d).
- the degree of fulfillment E x of the measured parameter X 1 is shown as a numerical value in percent.
- the evaluation of the degree of fulfillment E ⁇ of the measured parameter X with regard to the worst degree of fulfillment (poor) or best degree of fulfillment (excellent) can be taken from the third column of the visualization based on the positioning of the arrow in the color scale.
- FIG. 4 contains the continuation of the graphical visualization of FIG. 3.
- Options for graphical representations are shown, for example a state diagram (constellation diagram), eye pattern (eye monitoring), frequency spectrum (spectrum), complementary distribution function (CCDF), etc.
- warnings about signal range violations of measured parameters X i are shown.
- the ascertained quality (quality value) Q s of the transmission signal is given as a percentage.
- the changed reference values X Refl and weighting factors G i can be blocked off for subsequent measurements as so-called profiles.
- the individual measured parameters X., the normalized and non-normalized deviations ⁇ X L and AX as well as the contributions P. for the quality Q s of the transmission signal achieved by the individual measured parameters X L can also be used for subsequent purposes, for example statistical evaluations Main computer 50 can be stored.
- the individual calculations of the method according to the invention for evaluating the quality Q s of the signal can also be blocked.
- the individual measured parameters X L of the transmission signal are stored in the main computer 50 solely for protocol and archiving purposes.
- the method according to the invention for evaluating the quality Q s of a signal cannot can only be extended to communications technology signals, but to all other signals, for example open-loop and closed-loop control signals, or other more complex measurement variables, for example in the field of medical diagnostics.
- digital broadcast signals the method according to the invention is of course also suitable for digital audio broadcast signals, e.g. B. according to the DAB (Digital Audio Broadcasting) standard, and for digital television broadcast signals not only according to the DVB-T standard, but also e.g. B. for VSB signals according to the American ATSC standard.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Multimedia (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Dc Digital Transmission (AREA)
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2005255982A AU2005255982B2 (en) | 2004-06-18 | 2005-04-28 | Method and device for evaluating the quality of a signal |
US11/629,951 US20080211918A1 (en) | 2004-06-18 | 2005-04-28 | Method and Device for Evaluating the Quality of a Signal |
DE502005007944T DE502005007944D1 (de) | 2004-06-18 | 2005-04-28 | Verfahren und vorrichtung zur bewertung der güte eines signals |
JP2007515798A JP2008503120A (ja) | 2004-06-18 | 2005-04-28 | 信号の品質を評価する方法および装置 |
AT05740434T ATE440451T1 (de) | 2004-06-18 | 2005-04-28 | Verfahren und vorrichtung zur bewertung der güte eines signals |
EP05740434A EP1749406B1 (de) | 2004-06-18 | 2005-04-28 | Verfahren und vorrichtung zur bewertung der güte eines signals |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004029421.6 | 2004-06-18 | ||
DE102004029421A DE102004029421A1 (de) | 2004-06-18 | 2004-06-18 | Verfahren und Vorrichtung zur Bewertung der Güte eines Signals |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005125220A1 true WO2005125220A1 (de) | 2005-12-29 |
Family
ID=34967152
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/004586 WO2005125220A1 (de) | 2004-06-18 | 2005-04-28 | Verfahren und vorrichtung zur bewertung der güte eines signals |
Country Status (9)
Country | Link |
---|---|
US (1) | US20080211918A1 (de) |
EP (1) | EP1749406B1 (de) |
JP (1) | JP2008503120A (de) |
CN (1) | CN100556155C (de) |
AT (1) | ATE440451T1 (de) |
AU (1) | AU2005255982B2 (de) |
DE (2) | DE102004029421A1 (de) |
ES (1) | ES2328262T3 (de) |
WO (1) | WO2005125220A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1921869A2 (de) | 2006-06-23 | 2008-05-14 | Sistemas Integrados de Servicios de Telecontrol, S.L. | System zur Überwachung und Steuerung von Geräten der Telekommunikation |
EP1860885B1 (de) * | 2006-05-23 | 2011-11-02 | Tektronix International Sales GmbH | Analyse von Videotransportströmen |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0517932D0 (en) * | 2005-09-03 | 2005-10-12 | Pace Micro Tech Plc | Method and system for testing signal integrity |
AU2007210334B2 (en) * | 2006-01-31 | 2010-08-05 | Telefonaktiebolaget Lm Ericsson (Publ). | Non-intrusive signal quality assessment |
US9197934B2 (en) * | 2012-05-17 | 2015-11-24 | Stmicroelectronics, Inc. | Fault tolerant system with equivalence processing driving fault detection and backup activation |
CN114071232B (zh) * | 2021-11-04 | 2023-07-21 | 广州华多网络科技有限公司 | 音视频质量可视化方法及其装置、设备、介质、产品 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19521408C1 (de) * | 1995-06-13 | 1996-12-12 | Inst Rundfunktechnik Gmbh | Verfahren zum objektiven Bewerten der Bildqualität zwei- oder dreidimensionaler Bilder |
EP0869684A2 (de) * | 1997-04-04 | 1998-10-07 | Hewlett-Packard Company | Bitstromqualitätanalysator |
US20020071614A1 (en) * | 2000-12-12 | 2002-06-13 | Philips Electronics North America Corporation | System and method for providing a scalable dynamic objective metric for automatic video quality evaluation |
US6496221B1 (en) * | 1998-11-02 | 2002-12-17 | The United States Of America As Represented By The Secretary Of Commerce | In-service video quality measurement system utilizing an arbitrary bandwidth ancillary data channel |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT266475B (de) * | 1966-07-26 | 1968-11-25 | Oesterr Studien Atomenergie | Verfahren und Vorrichtung zur Erzeugung eines Regelsignales für automatisch gesteuerte Einrichtungen |
US4889132A (en) * | 1986-09-26 | 1989-12-26 | The University Of North Carolina At Chapel Hill | Portable automated blood pressure monitoring apparatus and method |
DE3639666A1 (de) * | 1986-11-20 | 1988-06-01 | Draegerwerk Ag | Verfahren zur bestimmung einer messgroesse eines stroemenden mediums und messschaltung hierzu |
FR2690544B1 (fr) * | 1992-04-24 | 1994-06-17 | Sextant Avionique | Procede d'exploitation d'un clavier tactile capacitif. |
US6725074B1 (en) * | 1999-06-10 | 2004-04-20 | Koninklijke Philips Electronics N.V. | Quality indicator for measurement signals, in particular, for medical measurement signals such as those used in measuring oxygen saturation |
JP3714661B2 (ja) * | 2000-03-23 | 2005-11-09 | 株式会社日立国際電気 | ディジタル伝送システム及び伝送状態表示方法 |
EP1176750A1 (de) * | 2000-07-25 | 2002-01-30 | Telefonaktiebolaget L M Ericsson (Publ) | Bestimmung der Verbindungsqualität eines Übertragungskanals in einem OFDM-Übertragungssystem |
US7142609B2 (en) * | 2000-11-29 | 2006-11-28 | Sunrise Telecom Incorporated | Method and apparatus for detecting and quantifying impairments in QAM signals |
EP1244094A1 (de) * | 2001-03-20 | 2002-09-25 | Swissqual AG | Verfahren und Vorrichtung zur Bestimmung eines Qualitätsmasses eines Audiosignals |
DE10115053A1 (de) * | 2001-03-27 | 2002-10-24 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Unterdrückung von Multipath-Störungen bei einem Empfänger für elektromagnetische Wellen |
US20040190633A1 (en) * | 2001-05-01 | 2004-09-30 | Walid Ali | Composite objective video quality measurement |
DE10163505A1 (de) * | 2001-12-21 | 2003-07-17 | Siemens Ag | Verfahren zur Untersuchung einer Messgröße |
US7317750B2 (en) * | 2002-10-31 | 2008-01-08 | Lot 41 Acquisition Foundation, Llc | Orthogonal superposition coding for direct-sequence communications |
JP4151387B2 (ja) * | 2002-11-15 | 2008-09-17 | セイコーエプソン株式会社 | 被写体の明るさに応じた画質の自動調整 |
US7362439B2 (en) * | 2003-08-01 | 2008-04-22 | Li-Cor, Inc. | Method of detecting the condition of a turf grass |
-
2004
- 2004-06-18 DE DE102004029421A patent/DE102004029421A1/de not_active Withdrawn
-
2005
- 2005-04-28 WO PCT/EP2005/004586 patent/WO2005125220A1/de active Application Filing
- 2005-04-28 DE DE502005007944T patent/DE502005007944D1/de active Active
- 2005-04-28 CN CNB2005800190217A patent/CN100556155C/zh not_active Expired - Fee Related
- 2005-04-28 EP EP05740434A patent/EP1749406B1/de not_active Not-in-force
- 2005-04-28 JP JP2007515798A patent/JP2008503120A/ja active Pending
- 2005-04-28 US US11/629,951 patent/US20080211918A1/en not_active Abandoned
- 2005-04-28 ES ES05740434T patent/ES2328262T3/es active Active
- 2005-04-28 AT AT05740434T patent/ATE440451T1/de not_active IP Right Cessation
- 2005-04-28 AU AU2005255982A patent/AU2005255982B2/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19521408C1 (de) * | 1995-06-13 | 1996-12-12 | Inst Rundfunktechnik Gmbh | Verfahren zum objektiven Bewerten der Bildqualität zwei- oder dreidimensionaler Bilder |
EP0869684A2 (de) * | 1997-04-04 | 1998-10-07 | Hewlett-Packard Company | Bitstromqualitätanalysator |
US6496221B1 (en) * | 1998-11-02 | 2002-12-17 | The United States Of America As Represented By The Secretary Of Commerce | In-service video quality measurement system utilizing an arbitrary bandwidth ancillary data channel |
US20020071614A1 (en) * | 2000-12-12 | 2002-06-13 | Philips Electronics North America Corporation | System and method for providing a scalable dynamic objective metric for automatic video quality evaluation |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1860885B1 (de) * | 2006-05-23 | 2011-11-02 | Tektronix International Sales GmbH | Analyse von Videotransportströmen |
EP1921869A2 (de) | 2006-06-23 | 2008-05-14 | Sistemas Integrados de Servicios de Telecontrol, S.L. | System zur Überwachung und Steuerung von Geräten der Telekommunikation |
EP1921869A3 (de) * | 2006-06-23 | 2010-08-25 | Sistemas Integrados de Servicios de Telecontrol, S.L. | System zur Überwachung und Steuerung von Geräten der Telekommunikation |
Also Published As
Publication number | Publication date |
---|---|
AU2005255982B2 (en) | 2009-08-20 |
ES2328262T3 (es) | 2009-11-11 |
CN100556155C (zh) | 2009-10-28 |
DE502005007944D1 (de) | 2009-10-01 |
AU2005255982A1 (en) | 2005-12-29 |
EP1749406A1 (de) | 2007-02-07 |
US20080211918A1 (en) | 2008-09-04 |
EP1749406B1 (de) | 2009-08-19 |
DE102004029421A1 (de) | 2006-01-05 |
ATE440451T1 (de) | 2009-09-15 |
JP2008503120A (ja) | 2008-01-31 |
CN1977545A (zh) | 2007-06-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE112007000694B4 (de) | Verfahren und Vorrichtung zur Bestimmung der für ein HFC-Netzwerk verfügbaren Gesamtleistungsspanne und zugehöriges computerlesbares Medium | |
WO2005125220A1 (de) | Verfahren und vorrichtung zur bewertung der güte eines signals | |
DE69523963T2 (de) | Verfahren und Vorrichtung zur Bewertung des Systemsicherheitsspielraums eines digitalen Übertragungssystems | |
DE60112185T2 (de) | Signalartbestimmung | |
EP0362315B1 (de) | Einrichtung zur überprüfung von systemen zur verarbeitung von audiosignalen | |
WO2011006786A1 (de) | Verfahren zur plausibilitätsprüfung von digitalen messsignalen | |
EP1125390B1 (de) | Verfahren zur anzeige des modulationsfehlers eines multiträger-signals | |
WO2011076190A1 (de) | Verfahren zum bestimmen von notching-parametern in einem plc-system sowie ein plc-system | |
DE102018003222A1 (de) | Verfahren zum Prüfen einer eine Mehrzahl drehbarer Komponenten aufweisenden Drehkomponentenanordnung | |
DE102004049166A1 (de) | Kennlinienmesssystem für eine Schaltung zur Übertragung eines digitalen Modulationssignals | |
DE3112243C2 (de) | Klirrfaktormeßgerät | |
DE19854177B4 (de) | Verfahren und Vorrichtung zum Vermeiden von Messwertverfälschungen beim Testen von Mobiltelefonen aufgrund von gestörten oder belegten Frequenz-Kanälen eines Mobilfunknetzes | |
DE60301155T2 (de) | Vorrichtung und Verfahren zur Fehlerkorrektur in Kommunikationssystemen variabler Übertragungsrate | |
DE112020006651T5 (de) | Detektionssystem, Detektionsvorrichtung und Detektionsverfahren | |
DE19944054B4 (de) | Anordnung zum Analysieren der nichtlinearen Eigenschaften eines Kommunikationskanals | |
EP1108297B1 (de) | Verfahren und vorrichtung zur messung der übertragungsqualität eines übertragungskanals | |
DE112019000494T5 (de) | Quantifizierung von zufälligem timing-jitter, der gausssche und gebundene komponenten enthält | |
EP2351268B1 (de) | Verfahren und vorrichtung zu analyse von code domain power und code domain error power | |
EP2326039B1 (de) | Verfahren und Vorrichtung zum Ermitteln von Amplituden- und Phasenstörungen in einem Messsignal | |
EP2820431A1 (de) | Verfahren und vorrichtung zur darstellung von ordinaten-abszissen-wertepaaren auf einer anzeigeeinrichtung | |
DE102015216758A1 (de) | Verfahren und Messgerät zum Ermitteln von Signalparametern | |
DE102013216300B4 (de) | Verfahren und Vorrichtung zum grafischen Darstellen von I/Q-Werten eines Basisbandsignals | |
DE10246316A1 (de) | Verfahren zum Bestimmen des Phasen- und/oder des Amplituden-Rauschspektrums eines digital modulierten Signals | |
DE60307601T2 (de) | Testverfahren eines optoelektrischen Wandlers | |
DE102024111704A1 (de) | Systeme und verfahren für das trainieren und die validierung von auf maschinellem lernen basierenden sende-/empfangssystemen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
DPEN | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005740434 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200580019021.7 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007515798 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005255982 Country of ref document: AU |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
ENP | Entry into the national phase |
Ref document number: 2005255982 Country of ref document: AU Date of ref document: 20050428 Kind code of ref document: A |
|
WWP | Wipo information: published in national office |
Ref document number: 2005255982 Country of ref document: AU |
|
WWP | Wipo information: published in national office |
Ref document number: 2005740434 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11629951 Country of ref document: US |