planning for the future of dvb-t2 transmission

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
•
2012 (May) , Anten AS
-Present status «National Broadcasters» 15 broadcaster
- TRT, Public TV
-16 shareholders
•
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
•
2013 (June- ) , COURT
- Stay of Execution Decision for some tenders
- Cancellation for whole tender process
•
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
•
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
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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
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