PLANNING FOR THE FUTURE OF DVB-T2 TRANSMISSION

IBRAHIM ILKER CUCIOGLU Electronic Engineer M.Sc.EE Deputy General Manager (Technical) ANTEN A.Ş. Taking Turkey To Digital 28.May.2015 Beykent University ISTANBUL

ANTEN A.Ş. (The DTT Network Operator -) •

2011, New Law « TV and Radio Broadcasting»  Switch to DTT  Licencing for DTT !- Terrestrial Broadcasting Network Operation (Whole Turkey, DTT) - One single company - Established by «National DTT licence holders» - Investment / Operation / Management

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2012 (May) , Anten AS -Present status «National Broadcasters» 15 broadcaster - TRT, Public TV -16 shareholders

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Anten AS

- Ready - Investment - Installation - Operation / Management

DIGITAL LICENSE PROCESS •

2013 (April ) , RTUK - Accomplished license tenders for - 33 National Licenses - 24 Regional Licenses - 185 Local Licenses

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2013 (June- ) , COURT - Stay of Execution Decision for some tenders - Cancellation for whole tender process

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2014 (September-) - 2015 (February) , GOVERNMENT (RTUK) - Amendment - 2 articles / Following procedure - regulations  Renew the digital terrestrial tv license tender  Authorize DTT Operator (Anten AS) temporarily for small phases

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2015 (May - ) , Anten AS - Application to RTUK , small phase line-up - Ready for the whole deployement

DVB-T2 TRIAL

City Population Area Planned Site Planning Mode Area Definition

: Ankara (Capital City) : 4.6m : 2.516km2 :4 : SFN : Urban No sea, no river Surrounded by mountains Higher buildings  concreat  glass covered buildings Rural Area (Far from downtown, in coverage) Closed to co-channel interference Not so huge as Istanbul for traffic / easy to measure Enough SFN site (not few, not many) Existing stations Possibility to use R/L or fiber distribution instead of satellite

DVB-T2 TRIAL ▫ ▫ ▫ ▫ ▫ ▫ ▫ ▫ ▫

Mode Reception Target Coding FEC Guard Interval FFT Size Pilot Pattern Channel Bandwidth Compression

: DVB-T2 : Indoor reception : 64QAM : 2/3 : 19/256 : 32K : PP4 : 27 Mbps : MPEG- 4

Trial Project Prepared Site : 3 existing ( Planned : 4) Avaliable capacity in existing stations Simulations: Coverage & Interference Mux : 2 HD, 5 SD : 27 Mbps Distribution : Satellite

NOW : HEVC

Experimented : 16 SD , Statistical Mux,VBR

DVB-T2 TRIAL

Outdoor Measurement / Vehicle

Monitor

Set-Top-Box

GPS

TV ANALYSER

Indoor Mesurement / Portable

2m

DVB-T2 TRIAL Outdoor Measurements : Coverage Sites ( Emission points) sufficient Outdoor Signal Strength sufficient SFN system works Indoor Measurements : Indoor Reception The signal penetration into the buildings Levels Homogeneously in Ankara Ground Floor → Top Different Points in a room Same axis / Opposite axises Measured Parameters Signal Level C/N LDPC BER BCH BER MER LINK Margin Set Top Box decodes?

DVB-T2 TRIAL OUTDOOR / COVERAGE MESUREMENTS

DVB-T2 TRIAL OUTDOOR / COVERAGE MESUREMENTS STUDY OF BAD/ CRITICAL RECEIVING PLACES

DVB-T2 TRIAL OUTDOOR / COVERAGE MESUREMENTS

DVB-T2 TRIAL OUTDOOR / COVERAGE MESUREMENTS

DVB-T2 TRIAL INDOOR MEASUREMENTS STUDY MODELLING THE RESULTS (BUILDING)

DVB-T2 TRIAL INDOOR MEASUREMENTS STUDY MODELLING THE RESULTS (FLAT)

DVB-T2 TRIAL INDOOR MEASUREMENTS STUDY MODELLING THE RESULTS

DVB-T2 TRIAL INDOOR MEASUREMENTS STUDY MODELLING THE RESULTS Studied Points O  Outside ( Ground Floor) A0B0  Ground Floor Near Window A1B1  1 st Floor Near Window A2B2  2 nd Floor Near Window A4B4  4 th Floor Near Window C1D1  1 st Floor Near Window (Opp. Side) E0F0  Ground Floor (Room without window) E1F1  1 st Floor (Room without window ) E2F2  2 nd Floor (Room without window ) K0  Groud Floor (Deep Indoor) K1  1 st Floor (Deep Indoor) K2  2 nd Floor (Deep Indoor)

DVB-T2 TRIAL INDOOR MEASUREMENTS STUDY

RESULTS OF THE TRIAL RTUKS’ REQUIREMENTS Threshold Levels - Outdoor : 50 dbuV (73 dbuV/m) - Indoor : 38 dbuV - C/N : 17,9 dB - Indoor Receiving Target: Ground Floor, Window

COVERAGE Quite Succesfull Gap filler needed INDOOR - Indoor Receiving Target: Ground Floor, Window / Quite Succesfull - Measured Signal Levels > Required Levels - STBs decoded

MOBILE STBs decoded < 50 km/hour

RESULTS OF THE TRIAL RECEIVING ANTENNA ISSUE - Many types in the market - Receiving parameters / values differs too much

ANTENNAS

ANTENNAS

RESULTS OF THE TRIAL RECEIVING ANTENNA ISSUE - Many types in the market - Receiving parameters / values differs too much - Marine antenna

ANTENNAS

ANTENNAS CALIBRATION 2.5

GdBd=GdBi-2,15 =2,5-2,15 =0,35

554MHz

RESULTS OF THE TRIAL RECEIVING ANTENNA ISSUE - Many types in the market - Marine antenna - Receiving parameters differs too much - Set Top Boxes should include the antenna to avoid big receiving complaints

16 SD IN MUX - Mpeg -4 - 27 Mbps - CBR : 1.68 Mbps / programme - Test : VBR /Statistical Multiplexing Test Result Good < 47 " Screen …