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BR/TSD دمشق 2005 BCD Planning Software 16 - 18 أغسطس - آب 2005 دمشق David Botha Workshop for the Arab Group of Countries.

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Presentation on theme: "BR/TSD دمشق 2005 BCD Planning Software 16 - 18 أغسطس - آب 2005 دمشق David Botha Workshop for the Arab Group of Countries."— Presentation transcript:

1 BR/TSD دمشق 2005 BCD Planning Software 16 - 18 أغسطس - آب 2005 دمشق David Botha Workshop for the Arab Group of Countries

2 BR/TSD دمشق 2005 BCD Procedure for the production of a plan Compatibility analysis and synthesis process Analysis Synthesis Admin/BR BR/PXT Admin/BR/PXT Admin/BR Admin/BR/PXT Admin. Workshop for the Arab Group of Countries

3 BR/TSD دمشق 2005 BCD Current status Delivery of software The EBU delivered: 1.Software for the: Prediction of the service area of analogue television assignments Compatibility assessment of digital sound broadcasting assignments and allotments Compatibility assessment of digital television broadcasting assignments and allotments Compatibility assessment: Mutually between requirements Against existing and planned analogue television broadcasting assignments Against existing and planned assignments to other primary services Coded in FORTRAN Workshop for the Arab Group of Countries

4 BR/TSD دمشق 2005 BCD Current status Delivery of software continued The EBU delivered: 2.Plan synthesis software for: Digital sound and television broadcasting requirements in band III Digital television broadcasting in band IV/V Code in FORTRAN 3.Total package: 74 source files resulting in 42 individual programs 28 reference data files Workshop for the Arab Group of Countries

5 BR/TSD دمشق 2005 BCD Current status Verification and testing BR assisted by PXT to specify and perform tests on: 1.Basic software functionality: Compile source code Execute routines based on general data examples Reporting errors and implement updates 2.Calculation verification: Verification of basic propagation functionality Compatibility assessment for simple cases Synthesis results based on artificial problems Workshop for the Arab Group of Countries

6 BR/TSD دمشق 2005 BCD Current status Verification and testing continued BR assisted by PXT specify and perform tests on: 3.Planning test scenarios: Software performance vs. system requirements Results from analyses and syntheses Variation of scenario parameters 4.Planning exercise scenarios: Results from analyses and syntheses Implementing different approaches to planning Findings as input to IPG meeting 5.Report on testing and verification submitted to the first IPG meeting Workshop for the Arab Group of Countries

7 BR/TSD دمشق 2005 BCD Current status Planning software: How does it work? Input data: Reference situations New digital BC requirements Data conversion Analogue TV assignment services areas Compatibility identification Combination of analyses Syntheses VHF and UHF treated in parallel and independently Workshop for the Arab Group of Countries

8 BR/TSD دمشق 2005 BCD Current status Planning software: How does it work? (continued) Analyses Data preprocessing Syntheses: Different algorithms Combination of results Identification of best solution VHF and UHF treated in parallel and independently Plan Workshop for the Arab Group of Countries

9 BR/TSD دمشق 2005 BCD Analysis Detailed overview General steps: 1.Data preparation of: Extracts of reference situations for broadcasting and other primary services into text; Requirements for digital broadcasting (assignments, allotments for T-DAB and DVB-T) into text; Conversion of text files into proprietary binary files. Workshop for the Arab Group of Countries

10 BR/TSD دمشق 2005 BCD Analysis Detailed overview continued General steps continued: 2.Calculation of: Service areas of analogue TV assignments Service areas of digital broadcasting assignments (equivalent service areas based on noise limited reduced by 3 dB); Incompatibilities identified pair-wise between digital broadcasting requirements mutually – cannot share the same channel; Incompatibilities identified pair-wise between digital requirements and existing and planned assignments - the relevant acceptable channels become not available; Incompatible when the protection margin on any test point and for any channel is less than –0.5 dB Workshop for the Arab Group of Countries

11 BR/TSD دمشق 2005 BCD Analysis Detailed overview continued General steps continued: 3.Post processing of results: Combining of incompatibility results of different cases; Analogue TV assignment Digital requirement Digital requirement Analogue TV assignment Digital requirement Digital requirement Other primary service Other primary service Digital requirement Consideration of administrative declarations Preparation of files for bands III and IV/V separately. Workshop for the Arab Group of Countries

12 BR/TSD دمشق 2005 BCD Basis of the analysis Input data Conversion of analogue assignments from the reference situation or new requirements; Existing and planned analogue TV assignments taken into account; Existing and planned assignments to other primary services taken into account. Workshop for the Arab Group of Countries

13 BR/TSD دمشق 2005 BCD Basis of the analysis Technical considerations Analogue assignment service areas calculation, multiple interference based on power sum method; Conversions indicated and taken into account; Calculation of estimated service areas based on noise limited coverage areas reduced by a margin by 3 dB; No receiving antenna directivity or polarisation discrimination for mobile and portable indoor reception; For fixed reception receiving antenna directivity and polarisation were taken into account. Workshop for the Arab Group of Countries

14 BR/TSD دمشق 2005 BCD Results of the analysis Coverage presentation Coverage presented relative to the IDWM national borders (both analogue TV assignments and digital broadcasting requirements); Selection of results possible; Results can be displayed without having to repeat the calculation. Workshop for the Arab Group of Countries

15 BR/TSD دمشق 2005 BCD Results of the analysis Detail incompatibility information Conference mode: Indicate limited worst case incompatibility; All incompatibilities are listed; Different incompatibility cases are provided in separate output files. Named mode: Change the configuration file to enable this mode; Detail incompatibility information provided for a specific site / requirement; Information specifically useful for coordination. Workshop for the Arab Group of Countries

16 BR/TSD دمشق 2005 BCD Synthesis Detailed overview General steps: 1.Preprocessing of incompatibility results: Conversion of digital to digital requirement incompatibility results into required file format; Generation of lists of available channels as opposed to acceptable channels; Data prepared for each requirement; Separate sets for bands III and IV/V. Workshop for the Arab Group of Countries

17 BR/TSD دمشق 2005 BCD Synthesis Detailed overview continued General steps continued: 2.Synthesizing frequency plans: Search for solutions based on input data and 49 channels in band IV/V and 67 combinations of channels overlapping in band III; Apply 162 individual fast algorithms in band III and 230 algorithms in band IV/V; Software can treat 150 000 requirements in band IV/V and 32 000 in band III; Requires 2 GB of random access memory. Workshop for the Arab Group of Countries

18 BR/TSD دمشق 2005 BCD Synthesis Workshop for the Arab Group of Countries

19 BR/TSD دمشق 2005 BCD Synthesis Detailed overview continued General steps continued: 3.Preparation of output data: Generate combined list of all solutions found for each algorithm; Identify the best solution as separate output. Workshop for the Arab Group of Countries

20 BR/TSD دمشق 2005 BCD Synthesis Assigning frequency resources using a structured procedure Using algorithms as methods to assign channels / frequency blocks; Requirements are anonymous; Available channels are taken into account; Incompatibilities amongst digital broadcasting requirements indicate that requirements cannot share the same channel / frequency block. Workshop for the Arab Group of Countries

21 BR/TSD دمشق 2005 BCD Synthesis Workshop for the Arab Group of Countries In the absence of a full conference-like database, the synthesis results of a limited situation are not conclusive!!!!!!

22 BR/TSD دمشق 2005 BCD Synthesis Synthesis the colourful way Plan to all have one requirement Acceptable choices = Acceptable channels / frequency blocks Workshop for the Arab Group of Countries Green Blue Pink Yellow

23 BR/TSD دمشق 2005 BCD Synthesis Synthesis the colourful way Same colour as neighbour = Incompatibility Workshop for the Arab Group of Countries Existing services = Pre-selected colour

24 BR/TSD دمشق 2005 BCD Synthesis Synthesis the colourful way Frequency assignment = Colour selection Workshop for the Arab Group of Countries

25 BR/TSD دمشق 2005 BCD Further development Items to be considered for improvement/correction General further development: Continued verification and testing; Report errors to EBU; Implement corrections and repeat testing; Suggest improvements; PXT and IPG request changes; Implement and test improvements and changes. Workshop for the Arab Group of Countries

26 BR/TSD دمشق 2005 BCD Further development Items to be considered for improvement/correction Specific further development: Implement IPG-1 request for equitable access in the synthesis; Implement additional planning options and variants; Improvement in calculation speed; Additional synthesis routines that improve planning efficiency (longer calculation time) Implementation of the final analysis. Workshop for the Arab Group of Countries

27 BR/TSD دمشق 2005 BCD Workshop for the Arab Group of Countries

28 BR/TSD دمشق 2005 BCD شكرا جزيلا Thank you Workshop for the Arab Group of Countries


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