FUTURE SPECTRUM NEEDS SUPPORTING A
DIGITAL TRANSITION (FROM A BROADCAST
SIGNAL DISTRIBUTION PERSPECTIVE)
ITU TELECOM WORLD 2009, GENEVA,
SWITZERLAND
Date:
Presented by:
7 October 2009
Dr. Sebiletso Mokone-Matabane, Chief Executive Officer
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SENTECH TOWER JOHANNESBURG
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OVERVIEW
 SENTECH TOWER
 WHO IS SENTECH?
 SENTECH BROADCASTING SIGNAL DISTRIBUTION INFRASTRUCTURE
 TERRESTIAL NETWORK: TRANSMITTING STATIONS
 SATELLITE DISTRIBUTION
 SENTECH’S TELEPORT
 TELECOMMUNICATIONS
 OTHER SERVICES
 TRANSMISSION PLANNING
 GIS PLANNING
 MEASUREMENTS
 SIGNAL DISTRIBUTION TRAINING
 KEY PROJECTS
 DIGITAL TERRESTRIAL TELEVISION (DTT)
 DTT: SOUTH AFRICAN PERSPECTIVE
 CHALLENGES FOR DIGITAL DIVIDEND TO BE USED FOR BROADCASTING
SERVICE CHANNELS
 DTT IMPLEMENTATION IN SOUTH AFRICA
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WHO IS SENTECH?
SENTECH is:
A commercially run, 100% owned by the State of the South Africa,
whose business is in electronic communications.
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Sentech Business:
• Broadcasting Signal Distribution
• Telecommunications
• Other services
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BROADCASTING SIGNAL DISTRIBUTION
SIGNAL DISTRIBUTION NETWORKS
Television
FM (Frequency Modulation)
SW (Short Wave)
MW (Medium Wave)
Ku-Band Direct-to-Home Satellite
C-Band Satellite
MMDS
BROADCAST BACKBONE
Satellite distribution (C-Band Point-to-Point)
Terrestrial Linking
Satellite Contribution
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BROACASTING SIGNAL DISTRIBUTION cont.
VALUE ADDED SERVICES
Network splitting
Paging, RDS,(Radio data services), VBI
(Vertical blanking interval)
Television Nicam Stereo
FM Stereo
VIVID DTH PLATFORM
Free to air
Future subscription services
SenCom
BUSINESS TV and BUSINESS RADIO
Sen TV
Sen Radio
Sen Data
Sen Educate
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BROADCASTING SIGNAL DISTRIBUTION
INFRASTRUCTURE
• Satellite Teleports (STP)
• 15 Transmitter Control Centers (TCC)
• Transmitter Stations
• V Transmitters
• FM Transmitters
• Medium-Wave Transmitters
• Short-wave Transmitter Station – 500Kw, 250Kw & 100Kw
transmitters
• C-band and Ku-band Satellite Uplink Facilities
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TERRESTRIAL NETWORK: TRANSMITTING STATIONS
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SATELLITE DISTRIBUTION
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SENTECH’S TELEPORT
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TELECOMMUNICATIONS
•
Voice - International Voice Traffic (in-bound and out-bound)
•
Data - VSAT
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OTHER SERVICES
SERVICES
Consulting
Engineering
Project Management
Training
Technical Auditing
Spectrum Monitoring
Refurbishment
Maintenance
HIGH SITE ACCOMMODATION (FACILITY RENTAL)
Mast
Building
Site
Road
Emergency Power
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TRANSMISSION PLANNING
Technical regulatory assistance
Radio propagation planning
 Regulatory / Technical data management
 Geographical Information System Analyses
Site selection
In-flight and Terrestrial measurement
 Desktop Publishing / Graphics
Geographical Information Systems
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GIS PLANNING
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TRANSMISSION PLANNING
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MEASUREMENTS
• Verify faultfinder and research
•
•
•
•
•
•
•
Horizontal Radiation Pattern (H.R.P)
Vertical Radiation Pattern (V.R.P)
Effective Radiation Power (E.R.P)
Correct tilt of transmitting antennae
Correct null tilt
Correct orientation of transmitting antennaes
Frequency compatibility
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SIGNAL DISTRIBUTION TRAINING
•
Sentech has conducted professional signal distribution and
broadcast training in:
•
•
•
•
•
•
Namibia
Ghana
Nigeria
Botswana
Madagascar
As well as various Broadcasters in South Africa
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DIGITAL TERRESTRIAL TELEVISION (DTT)
•
Upgrade analogue transmitters site to enable DTT transmission
•
Set Top Box integration
•
Spectrum utilization during dual illumination
•
Installing the multiplexers
•
Training
•
Regulatory policies
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KEY PROJECTS
•
DTT: migration of analogue terrestrial television infrastructure to
digital.
•
2009 Confederations Cup and 2010 FIFA World Cup Soccer:
-
Sentech successfully provided backup satellite infrastructure
(local feed) for the 2009 Confederations Cup.
-
On a commercial basis, Sentech successfully provided FIFA with
the international feed and back-up linking from its teleport (STP).
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DIGITAL TERRESTRIAL TELEVISION
(DTT)
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DIGITAL TERRESTRIAL TELEVISION (DTT)
•
The purpose of the project is to migrate all Sentech
analogue TV services operating on VHF and UHF from a
PAL-I protocol to an MPEG-4 digital TV platform.
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DTT: SOUTH AFRICAN PERSPECTIVE
•
As far back as 2000 South Africa acknowledged that migration
from analogue to digital terrestrial television is inevitable.
Sentech conducted T-DAB transmission test in Pretoria and
digital terrestrial television transmission in Johannesburg
(Source: Notice of publication of Terrestrial Broadcasting
Frequency Plan 2003, Government Gazette No.25786 of 28
November 2003, General Notice Number 3365).
•
The Independent Communications Authority of South Africa
(ICASA) followed the work of the ITU leading to the Regional
Radio Conference (RRC) concerning the introduction of digital
broadcasting (Source: Notice of publication of Final Terrestrial
Broadcasting Frequency Plan, 2004, Government Gazette No.
28299 of 5 December 2005, General Notice Number 1513).
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DTT: SOUTH AFRICAN PERSPECTIVE cont.
•
South Africa participated in RRC-06 and is signatory to the Final
Acts. The Government of the Republic of South Africa under the
Department of Communications (DoC) established an industry
Digital Migration Working Group (DMWG). The DMWG
comprised of broadcasting signal distribution, broadcasters,
consumer groups and set-top-boxes manufacturers.
•
The purpose of the industry migration working forum was among
others to share ideas on how South Africa can migrate from
analogue to digital, explore possible standards for transmission
and set-top-boxes and to prepare a report for submission to the
Minister of Communications in order to formulate a broadcasting
digital migration policy.
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DTT: SOUTH AFRICAN PERSPECTIVE cont.
•
The Digital Migration Working Group report was submitted to
Minister of Communications in 2006. The Minister of
Communications established an advisory council known as the
Digital Dzonga (South). The purpose of the Digital Dzonga is to
advise an oversee the implementation of the migration process.
Sentech is represented in Digital Dzonga (South) Council and is
the Chair of the Broadcast Infrastructure Working Group.
•
On 8 September 2008, the Minister of Communciations
published Broadcasting Digital Migration Policy in Government
Gazette No.31408.
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DTT: SOUTH AFRICAN PERSPECTIVE cont.
•
On 21st February 2007 the South African cabinet decided as
follows:
i.
Digital TV signals will be switched on as of 1 November
2008 and the analogue TV signal switched off on 1
November 2011
ii.
Sufficient frequency spectrum must be retained for digital
broadcasting migration.
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DTT: SOUTH AFRICAN PERSPECTIVE cont.
ONE OF THE BENEFITS OF DTT:
•
Spectrum Efficiency
• Spectrum a finite national
resource
• Digital makes far more efficient
use of the available spectrum
• Allows for expansion and new
services
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DTT: SOUTH AFRICAN PERSPECTIVE cont.
DIGITAL
ANALOGUE
Reg 1 TV
Reg 2 TV
Analogue TV
• 8 MHz Spectrum
• One Service
• New Frequency per site
Digital TV
• 8 MHz Spectrum
• 6 or more Services
• Same frequency re-used in Single
Frequency Networks
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DTT: SOUTH AFRICAN PERSPECTIVE cont.
Opportunities of DTT for South Africa as a developmental State
committed to the creation of an information society, the main
aspects are: •
multiple channels with a broader array of programmes and
services including more social economic and political
programme content.
•
Public Interest services: e-government, e-health, e-medicine, elearning, telecentres and community centres.
•
a greater programme choice for the viewer.
•
opportunity to develop the television industry.
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CHALLENGES FOR DIGITAL DIVIDEND TO BE USED
FOR BROADCASTING SERVICE CHANNELS
•
•
An appropriate frequency spectrum plan that will show a systematic
switch off of analogue broadcasting services. The spectrum from
analogue switch off would then go towards the dividend.
There are currently broadcasting and non-broadcasting services
operating in the spectrum 790 – 862.
•
The position of television broadcasters is that ICASA should not
make further assignments to non-broadcasting services in this band
790 – 862.
•
However, the position of communication service providers in South
Africa is that ICASA should migrate all broadcasting services from
frequencies 790 – 862 so that the band can be used exclusive for
telecommunications services.
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DTT IMPLEMENTATION IN SOUTH AFRICA
•
Sentech commenced the migration process from 1 April 2006.
•
Currently the project is in phase 4 providing population coverage
of 33.3%. The objective is to achieve 63,3% population
coverage by 31 March 2010. Subject to timeous finalisation of
the DTT spectrum plan and policy implementation.
•
Sentech switched digital signals on 30 October 2008, two days
before the deadline at the ITU, World Telecommunications
Standardisation Assembly (WTSA).
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DTT IMPLEMENTATION IN SOUTH AFRICA cont.
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THANK YOU
Chief Executive Officer: Dr. Sebiletso Mokone-Matabane
Tel:
+27 11 691-7069
Fax: +27 11 691-7118
email: ceo@sentech.co.za
Sentech Limited
Private Bag X06
HONEYDEW
2040
REPUBLIC OF SOUTH AFRICA
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