EP0992136B1 - Verfahren zur suche von nutzbaren sendefrequenzen für tv- und rundfunksender - Google Patents

Verfahren zur suche von nutzbaren sendefrequenzen für tv- und rundfunksender Download PDF

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Publication number
EP0992136B1
EP0992136B1 EP98928282A EP98928282A EP0992136B1 EP 0992136 B1 EP0992136 B1 EP 0992136B1 EP 98928282 A EP98928282 A EP 98928282A EP 98928282 A EP98928282 A EP 98928282A EP 0992136 B1 EP0992136 B1 EP 0992136B1
Authority
EP
European Patent Office
Prior art keywords
field strength
interference
transmitter
frequency
contour
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 - Lifetime
Application number
EP98928282A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0992136A1 (de
Inventor
Jochen Scheinert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche Telekom AG
Original Assignee
Deutsche Telekom AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Deutsche Telekom AG filed Critical Deutsche Telekom AG
Publication of EP0992136A1 publication Critical patent/EP0992136A1/de
Application granted granted Critical
Publication of EP0992136B1 publication Critical patent/EP0992136B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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 for the search of usable transmission frequencies for TV and radio stations the preamble of claim 1.
  • the invention is based on a in the flowchart of FIG. 1 explained operation sequence explained in more detail.
  • the flow chart of Fig. 1 shows the basic Procedural steps for the frequency search for TV and Broadcasting station or the like.
  • all transmitter locations in the DC and Neighboring channels (for example, VHF range -400 to +400 kHz to the respective frequency) at which the The interference coefficient exceeds the specified limit value, such as for example, 34 dB.
  • These detected stations are after Height of the interference coefficient sorted. Starting with the transmitter with the highest interference coefficient is the change of the usable field strength at the site, on the supply contour either from the existing file or using each Calculation and given or determined (Scheme / raster) test points calculated. Will the value for exceeded the allowable increase, then the Interference factor reduced until the permissible increase is complied with.
  • test points the change is the usable one Field strength calculated. For example, in the FM sector an increase of the usable field strength by a maximum of 0.5 dB since the time the sender was included in the plan allowed. This calculation rule requires a Sender database, which is suitable for comparison calculations to be backdated. If this possibility is not given, must with a lower threshold (for example, 0.1 or 0.2 dB) and later check more closely.
  • One special test point is always the location; For this the calculation takes place without consideration of the Directivity of the receiving antenna for stereo reception in VHF, analogous to TV. At this test point is already a rough one Statement on the compatibility of the planning possible. At all other test points is the receiving antenna too consider. In the VHF range, test points are only on or within the interference contour, that is the payload field strength must be ⁇ the usable field strength.
  • Test points set within the interference contour can be specified according to systematics more Test points set within the interference contour become.
  • the number of predefined test points determines the Calculation effort or the computer runtime.
  • reception locations At reception locations will ensure compliance with the required safety distance checked.
  • ITU International Telecommunication Union
  • diffraction model required. The whole However, calculation to a reception location takes place only in each case with one of the two models. A receiving location is only permissible under the applicable directives supplied applies. Due to the influences of topographical Conditions, it is not possible, a fixed scheme for to specify the receiving locations, which only makes sense Reception places include, as in the front specified statistical methods. It can on the one hand not allowed receiving sites occur and on the other hand permissible are not detected. To limit the Computational effort, however, a compromise can be found however, follow-up may be required become.
  • the check of compliance with the safety distance is carried out after the criteria under the selection of the receiving locations are described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmitters (AREA)
  • Radio Relay Systems (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
EP98928282A 1997-06-27 1998-05-16 Verfahren zur suche von nutzbaren sendefrequenzen für tv- und rundfunksender Expired - Lifetime EP0992136B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19727301 1997-06-27
DE19727301A DE19727301C2 (de) 1997-06-27 1997-06-27 Verfahren zur Suche von nutzbaren Sendefrequenzen für TV- und Rundfunksender
PCT/EP1998/002895 WO1999000920A1 (de) 1997-06-27 1998-05-16 Verfahren zur suche von nutzbaren sendefrequenzen für tv- und rundfunksender

Publications (2)

Publication Number Publication Date
EP0992136A1 EP0992136A1 (de) 2000-04-12
EP0992136B1 true EP0992136B1 (de) 2005-01-26

Family

ID=7833797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98928282A Expired - Lifetime EP0992136B1 (de) 1997-06-27 1998-05-16 Verfahren zur suche von nutzbaren sendefrequenzen für tv- und rundfunksender

Country Status (7)

Country Link
EP (1) EP0992136B1 (cs)
AT (1) ATE288157T1 (cs)
CZ (1) CZ297539B6 (cs)
DE (2) DE19727301C2 (cs)
HU (1) HUP0002200A3 (cs)
PL (1) PL337525A1 (cs)
WO (1) WO1999000920A1 (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2790626B1 (fr) * 1999-03-05 2002-01-04 Telediffusion Fse Procede d'allocation de frequences a un ensemble d'emetteurs par recherche tabou

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2628585A1 (fr) * 1988-03-08 1989-09-15 Sgs Thomson Microelectronics Appareil de radio avec systeme de recherche de canal d'emission
DE4207290C2 (de) * 1992-03-07 1998-05-28 Deutsche Telekom Ag Verfahren zur Zuteilung von Frequenzen an Sender für picozellulare Funknetze

Also Published As

Publication number Publication date
CZ474599A3 (cs) 2000-06-14
CZ297539B6 (cs) 2007-01-03
DE19727301C2 (de) 2002-08-29
DE59812517D1 (de) 2005-03-03
HUP0002200A2 (hu) 2000-11-28
WO1999000920A1 (de) 1999-01-07
ATE288157T1 (de) 2005-02-15
HUP0002200A3 (en) 2002-11-28
PL337525A1 (en) 2000-08-28
DE19727301A1 (de) 1999-02-11
EP0992136A1 (de) 2000-04-12

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