Digital Video Broadcasting - Second Generation Terrestrial is the second generation standards for terrestrial transmission. to know more go though the slides
DVB is a set of standards that define digital broadcasting using existing satellite, cable, and terrestrial infrastructures.
The term digital television is sometimes used as a synonym for DVB
DVB is a set of standards that define digital broadcasting using existing satellite, cable, and terrestrial infrastructures.
The term digital television is sometimes used as a synonym for DVB
At DVB Wolrd 2015, Copenhagen March 24th 2015, Mr. Kenneth Wenzel from Open Channel in Denmark shared the experiences gained, from being the world’s first to deploy and trial digital radio based on the new DVB-T2 profile T2 Lite.
The presentation proved the superiority and robustness of T2 Lite for digital radio, instead of DAB+, which is widely regarded as obsolete today.
Hong Kong’s independent regulator issued July 13th 2017 an amended mobile TV license to HKMTV, which allows it to change its transmission technology from CMMB to DVB-T2 Lite. The new transmission standard will be implemented within 12 months.
At Sveriges Radio, Stockholm February 6th 2015, Mr. Kenneth Wenzel from Open Channel in Denmark shared the experiences gained, from being the world’s first to deploy and trial digital radio based on the new DVB-T2 profile T2 Lite. The presentation proved the superiority and robustness of T2 Lite for digital radio, instead of DAB+, which is widely regarded as obsolete today.
Digital Television (DTV) is a new type of broadcasting technology that will transform your television viewing experience. DTV enables broadcasters to offer television with movie-quality picture and sound. It can also offer multicasting and interactive capabilities.
In areas where there are multiple original networks (Original Network IDs) as Copenhagen, where you can receive DTT signals from both Denmark (red) and Sweden (green), the DVB-T2 device (NorDig IRD) shall first sort/list all services from Denmark (Original Network ID = 0x20D0), before sorting/listing the next original network, here Sweden (Original Network ID = 0x22F1).
Within DVB’s SI code allocation (ETR162), there is normally an un-written code of practise for digital terrestrial networks that the original network id has been allocated by the DVB office to the value of 0x2000 plus the country’s ISO 3166 Country code value.
This is true for all countries, except three countries DTT network:
› Swedish DTT (0x22F1), Hungarian DTT (0x22C7) & Portugal DTT (0x22C8)
Next Generation of Digital Radio & Mobile TV.
June 19th 2016 | Updated version (# 115) with more DVB-T2 mobile device, more countries case and a section on T2 Lite vs DAB+ plus a new section on HEVC.
Open Channel has applied for permission to conduct a 3-year DRM+ trial on the FM band in Copenhagen from April 2019.
DRM+ (Mode E) is a new digital radio broadcasting standard above 30 MHz up to 240 MHz.
DRM+ provides bitrates between 37.2 and 186.3 kbit/s depending on robustness level, using QPSK or 16QAM modulations and 100 kHz bandwidth.
DVB-T2 Lite for Digital Radio by Kenneth WenzelYOZZO
At Thailand’s Engineering Expo 2014, Kenneth Wenzel from Open Channel in Denmark, shared the experiences gained, from being the world’s first to deploy and trial digital radio based on the new DVB-T2 profile T2-Base-Lite. The presentation proved the superiority and robustness of T2 Lite for digital radio, instead of DAB+
This presentation provides a full overview of the DAB+ system, from its history to the family of standards, network structure, receivers, automotive and the future
This Solution Overview gives an overview of the most common Digital Terrestrial Television (DTT) primary distribution
architectures involving satellite. Attention is paid to the role of efficient usage of the satellite payload in order to minimize OPEX costs.
At DVB Wolrd 2015, Copenhagen March 24th 2015, Mr. Kenneth Wenzel from Open Channel in Denmark shared the experiences gained, from being the world’s first to deploy and trial digital radio based on the new DVB-T2 profile T2 Lite.
The presentation proved the superiority and robustness of T2 Lite for digital radio, instead of DAB+, which is widely regarded as obsolete today.
Hong Kong’s independent regulator issued July 13th 2017 an amended mobile TV license to HKMTV, which allows it to change its transmission technology from CMMB to DVB-T2 Lite. The new transmission standard will be implemented within 12 months.
At Sveriges Radio, Stockholm February 6th 2015, Mr. Kenneth Wenzel from Open Channel in Denmark shared the experiences gained, from being the world’s first to deploy and trial digital radio based on the new DVB-T2 profile T2 Lite. The presentation proved the superiority and robustness of T2 Lite for digital radio, instead of DAB+, which is widely regarded as obsolete today.
Digital Television (DTV) is a new type of broadcasting technology that will transform your television viewing experience. DTV enables broadcasters to offer television with movie-quality picture and sound. It can also offer multicasting and interactive capabilities.
In areas where there are multiple original networks (Original Network IDs) as Copenhagen, where you can receive DTT signals from both Denmark (red) and Sweden (green), the DVB-T2 device (NorDig IRD) shall first sort/list all services from Denmark (Original Network ID = 0x20D0), before sorting/listing the next original network, here Sweden (Original Network ID = 0x22F1).
Within DVB’s SI code allocation (ETR162), there is normally an un-written code of practise for digital terrestrial networks that the original network id has been allocated by the DVB office to the value of 0x2000 plus the country’s ISO 3166 Country code value.
This is true for all countries, except three countries DTT network:
› Swedish DTT (0x22F1), Hungarian DTT (0x22C7) & Portugal DTT (0x22C8)
Next Generation of Digital Radio & Mobile TV.
June 19th 2016 | Updated version (# 115) with more DVB-T2 mobile device, more countries case and a section on T2 Lite vs DAB+ plus a new section on HEVC.
Open Channel has applied for permission to conduct a 3-year DRM+ trial on the FM band in Copenhagen from April 2019.
DRM+ (Mode E) is a new digital radio broadcasting standard above 30 MHz up to 240 MHz.
DRM+ provides bitrates between 37.2 and 186.3 kbit/s depending on robustness level, using QPSK or 16QAM modulations and 100 kHz bandwidth.
DVB-T2 Lite for Digital Radio by Kenneth WenzelYOZZO
At Thailand’s Engineering Expo 2014, Kenneth Wenzel from Open Channel in Denmark, shared the experiences gained, from being the world’s first to deploy and trial digital radio based on the new DVB-T2 profile T2-Base-Lite. The presentation proved the superiority and robustness of T2 Lite for digital radio, instead of DAB+
This presentation provides a full overview of the DAB+ system, from its history to the family of standards, network structure, receivers, automotive and the future
This Solution Overview gives an overview of the most common Digital Terrestrial Television (DTT) primary distribution
architectures involving satellite. Attention is paid to the role of efficient usage of the satellite payload in order to minimize OPEX costs.
In this presentation, production of digital audio is discussed. Also brief introduction about digital audio broadcast, recording techniques and stereo phony is given.
EFFECTS OF FILTERS ON THE PERFORMANCE OF DVB-T RECEIVERijwmn
Digital Video Broadcasting-Terrestrial (DVB-T) is an international standard for digital television
services. Orthogonal Frequency Division Multiplexing (OFDM) is the core of this technology. OFDM
based system like DVB-T can handle multipath fading and hence it can minimize Inter Symbol
Interference (ISI). DVB-T has some limitations too namely large dynamic range of the signals and
sensitivity to frequency error. In order to overcome these limitations DVB-T receivers should be optimally
designed. In this paper we address the issues related to optimal DVB-T receiver design. There of several
signal processing units in a DVB-T receiver. A low-pass filter is one of them. In this paper, we consider
some classic filters namely Butterworth, Chebyshev, and elliptic in the DVB-T receiver. The effects of
different filters on the performances of DVB-T receiver have been investigated and compared in this
paper under AWGN channel condition
Implementationof Reconfigurable Architecture For Generic OFDM Modulator (Hybr...IJERA Editor
Modern world’s wireless communication is booming and it uses multiple carriers for modulations .OFDM is
multi carrier modulation and utilized in many standards of wireless communication such as DAB, DVB,
wireless LAN etc. Notable fact is that the OFDM frame structure of these wireless communication are similar
, this OFDM frames consists of number of OFDM symbols following with synchronizing signal with different
cyclic prefix and guard interval. This paper shows how to develop generic OFDM modulator through a novel
reconfigurable architecture to meet different wireless communication standards.
Alberto Morello and Vittoria Mignone
DVB-S2 is the second-generation specification for satellite broadcasting – developed by the DVB (Digital Video Broadcasting) Project in 2003. It benefits from more recent developments in channel coding (LDPC codes) combined with a variety of
modulation formats (QPSK, 8PSK, 16APSK and 32APSK).
Digital broadcast systems have increasingly been deployed for various services such as
Digital Video Broadcasting (i.e. DVB-S, DVB-T, etc.) and Digital Audio Broadcasting (DAB). Classical
digital broadcast systems were designed with fixed modulation techniques, which had to guarantee
reliable communication even with very hostile channel environment. Video Broadcasting is playing a
key role in communication areas. In this paper DVB-T (terrestrial based digital video broadcasting) based
OFDM is analyzed in terms of various parameters for 2K mode.
Keywords:- Digital video broadcasting, DVB-T, orthogonal frequency division multiplexing, OFDM
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
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3.
Include DVB-S, DVB-S2, DVB-C, DVB-T and DVBT 2.
DVB-T stands for Digital Video Broadcasting –
Terrestrial.
These standards define the physical layer and data link
layer of the distribution system.
Transmits a compressed digital audio/video
stream, using OFDM modulation with concatenated
channel coding .
3
4. The
first country that deployed DVB-T2 is the
UK, launched in March 2010.
Launched
in Italy, Sweden, and Finland in 2010
and 2011.
Outside of Europe DVB-T2 pay-TV services were
launched in Zambia, Nigeria, Kenya.
Trials
are currently taking place across the globe, it
is thought to be installed in India by 2014.
4
5. Multiple
TS or
GS
streams
Up to 255 input streams
Input
processing
Bit interleaved
coding &
modulation
COFDM
generation
Input
preprocessor(
s)
Frame
builder
5
7. Enable
the transport of data independent of its
structure.
Both
the allocated capacity and the robustness can
be adjusted.
Two
general modes are defined.
Fig. Different PLP's occupying different time slices
7
8. Most
simple mode can be viewed as a
straightforward extension of DVB-T.
Not
sub-divided into multiple PLPs.
Only
a single PLP is used, transporting a single
transport stream.
The
same robustness is applicable to all content.
8
9. This
more advanced mode of operation applies the
concept of multiple physical-layer pipes.
Service -specific robustness.
Offers potentially longer time-interleaving depth
as well as the option of power saving in the
receiver.
Fig. T2- frame for single RF
channel, multiple PLP mode (here: 5
9
PLPs)
10. The
initial symbols of a DVB-T2 physical-layer
frame are preamble symbols.
The frame starts with the highly robust
differentially BPSK-modulated P1 symbol, with
guard intervals at both ends.
P2 symbols provide all static, configurable and
dynamic layer-1 signalling.
10
11.
Bit interleaver after FEC based on a LDPC word.
Cell
interleaver after mapping based on a FEC frame.
Time
interleaver after cell interleaver based on a TI frame.
Frequency
interleaver before IFFT based on a symbol
11
13. Bit
interleaver interleaves code bits in a LDPC
word.
Cell interleaver interleaves mapped I Q values in a
FEC frame.
Time interleaver is a protection against long
impulsive interferers.
Frequency interleaver is a protection against
frequency selective interferers (e.g. notches).
13
17. Largest
entity of a DVB-T2 system.
Carries
T2-frames and may also carry FutureExtension Frame (FEF).
The
maximum number of T2-frames in a super
frame is 255.
The
maximum length of a T2-frame is 250 ms and
the maximum length of a FEF part is 250 ms.
17
18. T2-frame
consists of a P1 symbol and a
configurable number of data symbols.
Fig. Structure of the T2-frame
18
20. The
availability of the DVB-T2 standard brings
new opportunities for the terrestrial television
delivery platform.
Broadcasters
consider offering new services on the
DTT platform which would have been difficult
given the limited frequency capacity available in
the VHF and UHF frequency bands.
It
can be expected that the DVB-T2 standard will
be relevant for many years into the future.
20