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Introduction Introduction Computer-Based Software Frequency Planning Tools for Digital TV Broadcasting Service Klaus Huber, LS telcom AG , Germany Interregional Seminar on the Transition from SECAM to Digital TV Broadcasting Kiev, November 14

  1. Introduction Introduction Computer-Based Software Frequency Planning Tools for Digital TV Broadcasting Service Klaus Huber, LS telcom AG , Germany Interregional Seminar on the Transition from SECAM to Digital TV Broadcasting Kiev, November 14 th , 2000 LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com

  2. Frequency Planning Environment Frequency Planning Environment "Frequency Planning" Regulator • National and International Coordination • Economic Assignment of Spectrum Emphasis on Avoiding Interference "Network Planning" Operator • Economic Coverage of Area/Population Emphasis on Coverage Interregional Seminar, Kiev, November 2000 LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com

  3. Frequency Planning Elements (1) Frequency Planning Elements (1) Transmitter Databases (Frequency "Plans") (International, Regional, National, Sub-National) • Geographic Position • Frequency • Power • Antenna Diagram • Antenna Height plus Site Height Above Sea Level • Transmission Mode Interregional Seminar, Kiev, November 2000 LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com

  4. Frequency Planning Elements (2) Frequency Planning Elements (2) GIS - Geographic Information System Raster Data "Terrain Databases" (DTM - Digital Terrain Models) • Featuring raster size and geodetic datum and classifying into - Topography (elevation height) - Morphology (clutter classes, land use) - Conductivity maps for LF/MF use • Population Data • Topological Maps (Showing Cities, Roads, etc.) Vector Data • Vector format data such as country borders, field strength contours, test points (e.g. allotment database for DAB, maintained by ERO) Interregional Seminar, Kiev, November 2000 LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com

  5. Frequency Planning Elements (3) Frequency Planning Elements (3) Raster Data • Resolution Topography • Accuracy • Availability • Price Morphology (Land Use) Population Interregional Seminar, Kiev, November 2000 LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com

  6. Frequency Planning Elements (4) Frequency Planning Elements (4) Population Population Topological Map Field Strength Result Overlay Interregional Seminar, Kiev, November 2000 LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com

  7. Frequency Planning Elements (5) Frequency Planning Elements (5) Vector Data Population Treatment as "vectors" is reasonable for: • "Contours", such as field strength contours or coverage contours • Country borders • Arbitrarily placed test points • Transmitter-related test points • Allotment borders Interregional Seminar, Kiev, November 2000 LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com

  8. Frequency Planning Elements (7) Frequency Planning Elements (7) Field Strength Prediction Models Non-Terrain Based • Use of "effective antenna height" • Monotonous decline of field strength with increasing distance to transmitter Example: ITU-R P. 370 DTM Based • Diffraction, shading, reflection • Terrain elevation and land use (morphology) • 2D and 3D models Examples: "Epstein-Peterson", "Longley&Rice", "Okumura-Hata" Interregional Seminar, Kiev, November 2000 LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com

  9. Frequency Planning Elements (8) Frequency Planning Elements (8) Coverage Prediction Calculation if field strength supplied by one transmitter or transmitter ensemble is sufficient. Interference Prediction Combination of all interfering signals and protection ratios, and comparison to field strength of useful signals, giving the "C/I" ratio. Both results require field strength calculation in advance Interregional Seminar, Kiev, November 2000 LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com

  10. Frequency Planning Elements (9) Frequency Planning Elements (9) Coordination Implementation of internationally accepted rules of calculation. Use of values in conformity with plans and recommendations, and use of appropriate formats and forms. Notification Reporting the parameters of own transmitters for inclusion into frequency plans. Interregional Seminar, Kiev, November 2000 LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com

  11. Frequency Planning Elements (10) Frequency Planning Elements (10) Presentation • Ability to print out lists as well as graphical representations • Symbol and color handling • Ability to introduce thresholds • Data exchange with office programs • Use of approved forms in administration Interregional Seminar, Kiev, November 2000 LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com

  12. Frequency Planning Elements (11) Frequency Planning Elements (11) Licensing • Keeping track of all assignments made as a national plan • Supporting statistics/reporting • Administrative effort should be minimized • This may even include built-in forms for billing Interregional Seminar, Kiev, November 2000 LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com

  13. The Digital Challenge in Broadcasting (1) The Digital Challenge in Broadcasting (1) New Elements in Transmitter Database New Transmission Modes Identifying: • Modulation • Different safeguard times • Different code rates and thus protection requirements Delay To account for: • D elay resulting from the feeder link (satellite) • Purposely shifted focus of network gain • Delay before retransmission of repeater SFN-ID To identify transmitters belonging to the same single frequency network Interregional Seminar, Kiev, November 2000 LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com

  14. The Digital Challenge in Broadcasting (2) The Digital Challenge in Broadcasting (2) New Elements in Transmitter Database Transmitter-Related Test Points • Were introduced in Chester 1997 and are distributed with transmitter data Interregional Seminar, Kiev, November 2000 LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com

  15. The Digital Challenge in Broadcasting (3) The Digital Challenge in Broadcasting (3) New Planning and Coordination Methods • Conversion Rules (Analog to Digital) for Transition Scenarios (Mixed / All Digital) • Single Frequency Networks (SFN's) in Addition to Conventional Multiple Frequency Networks • Allotment Planning (Area Related) in Addition to Conventional Assignment Planning (Site Related) Becomes Possible Interregional Seminar, Kiev, November 2000 LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com

  16. The Digital Challenge in Broadcasting (4) The Digital Challenge in Broadcasting (4) 'Real' (Operator View) Network Planning • Including Influence of Safeguard Interval (Self-Interference) • Including Network Gain 'Cross Services' Compatibility Checks • Analog Broadcasting ↔ Digital Broadcasting • Digital Broadcasting ↔ Other Services Interregional Seminar, Kiev, November 2000 LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com LS telcom AG • Im Gewerbegebiet 31-35 • 77839 Lichtenau • Germany www.lstelcom .com

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