BR/TSD

1. Workshop for the African Group of Countries BR/TSD Planning Software BCD 25 – 29 April 2005 Dakar David Botha Dakar 2005

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

3. Workshop for the African Group of Countries BR/TSD Current status BCD 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 assignments and allotments • Compatibility assessment: • Mutually • Against existing and planned analogue television broadcasting • Against existing and planned assignments to other primary services • Coded in FORTRAN Dakar 2005

4. Workshop for the African Group of Countries BR/TSD Current status BCD Delivery of software continued • The EBU delivered: • 2. Plan synthesis software for: • Digital sound and television broadcasting requirements in band III • Digital television in band IV/V • Code in FORTRAN • 3. Total package: • 77 source files resulting in 35 individual programs • 27 reference data files Dakar 2005

5. Workshop for the African Group of Countries BR/TSD Current status BCD 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 Dakar 2005

6. Workshop for the African Group of Countries BR/TSD Current status BCD 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 to be submitted to the first IPG meeting Dakar 2005

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

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

9. Workshop for the African Group of Countries BR/TSD Analyses BCD 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. Dakar 2005

10. Workshop for the African Group of Countries BR/TSD Analyses BCD 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 Dakar 2005

11. Workshop for the African Group of Countries BR/TSD Analyses BCD 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 • Digital requirementOther primary service • Other primary service  Digital requirement • Consideration of administrative declarations • Preparation of files for bands III and IV/V separately. Dakar 2005

12. Workshop for the African Group of Countries BR/TSD Syntheses BCD Detailed overview • General steps: • 1. Preprocessing of compatibility results: • Conversion of digital to digital requirement in compatibility results into files; • Generation of lists of available channels as opposed to acceptable channels; • Data prepared for each requirement; • Separate sets for bands III and IV/V. Dakar 2005

13. Workshop for the African Group of Countries BR/TSD Syntheses BCD 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 230 individual ‘fast’ algorithms; • Software can treat 150 000 requirements in band IV/V and 32 000 in band III; • Require 2 GB of random access memory. Dakar 2005

14. Workshop for the African Group of Countries Syntheses BR/TSD BCD Dakar 2005

15. Workshop for the African Group of Countries BR/TSD Syntheses BCD 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. Dakar 2005

16. Workshop for the African Group of Countries BR/TSD Further development BCD 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; • Implement and test improvements. Dakar 2005

17. Workshop for the African Group of Countries BR/TSD Further development BCD Items to be considered for improvement/correction • Specific further development: • Extracting and publishing analysis results; • Method for treating administrative declarations (compatibility and usable/unusable channels); • Extracting and publishing synthesis results; • Improvement in calculation speed; • Additional synthesis routines that improve planning efficiency (longer calculation time); • Developing alternative synthesis methods, if the number of requirements exceeds 32 000 (Band III) and 150 000 (Band IV/V). Dakar 2005

18. Workshop for the African Group of Countries BR/TSD BCD Thank you Merci Dakar 2005