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

BR/TSD Dakar 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 African Group of Countries

BR/TSD Dakar 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 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 Workshop for the African Group of Countries

BR/TSD Dakar 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 in band IV/V Code in FORTRAN 3.Total package: 77 source files resulting in 35 individual programs 27 reference data files Workshop for the African Group of Countries

BR/TSD Dakar 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 African Group of Countries

BR/TSD Dakar 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 to be submitted to the first IPG meeting Workshop for the African Group of Countries

BR/TSD Dakar 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 African Group of Countries

BR/TSD Dakar 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 African Group of Countries

BR/TSD Dakar 2005 BCD Analyses 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 African Group of Countries

BR/TSD Dakar 2005 BCD Analyses 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 African Group of Countries

BR/TSD Dakar 2005 BCD Analyses 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 African Group of Countries

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

BR/TSD Dakar 2005 BCD Syntheses 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 requirements in band IV/V and in band III; Require 2 GB of random access memory. Workshop for the African Group of Countries

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

BR/TSD Dakar 2005 BCD Syntheses 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 African Group of Countries

BR/TSD Dakar 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; Implement and test improvements. Workshop for the African Group of Countries

BR/TSD Dakar 2005 BCD Further development 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 (Band III) and (Band IV/V). Workshop for the African Group of Countries

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

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