B TV, Mobile TV and Sound Broadcasting · 2016. 1. 29. · ISDB-T ISDB-T B ABNT NBR – 15602 –...
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www.rohde-schwarz.com/technology/isdb-t MPEG-2 multiplexer TS remultiplex Guard interval addition OFDM frame structure Frequency interleaving Time interleaving Combining of hierarchical levels IFFT Bit interleaving Carrier modulation f s : MHz = 8.126984 MHz 63 512 Mapping Bit interleaving Carrier modulation Mapping Bit interleaving Carrier modulation Mapping Pilot signals TMCC signal Convolutional coding Bytes –> bits /5$ ƛTUV Bytes –> bits /5$ ƛTUV Bits –> bytes /5$ ƛTUV Byte interleaving Delay adjust- ment Energy dispersal Convolutional coding Bytes –> bits /5$ ƛTUV Bytes –> bits /5$ ƛTUV Bits –> bytes /5$ ƛTUV Byte interleaving Delay adjust- ment Outer code (204,188) Division of TS into hierarchical levels Energy dispersal Convolutional coding Bytes –> bits /5$ ƛTUV Bytes –> bits /5$ ƛTUV Bits –> bytes /5$ ƛTUV Byte interleaving Delay adjust- ment Energy dispersal ISDB-T ISDB-T B ABNT NBR – 15602 – 15603 Japanese and Chinese character set ARIB STD-B24 ARIB STD-B10 ARIB TR-B14 MPEG-2 ISO/IEG 13818-1 DVB ETSI EN 300468 Differences to DVB NIT with ISDB system management descriptor with: – ISDB TS information descriptor – ISDB partial reception descriptor – ISDB terrestrial delivery system descriptor Additional EITs for different screens (signaled in SDT) Additional ISDB tables + ISDB descriptors Settings for mobile TV (partial reception) Transmitting control Video for HDTV and SDTV ISO/IEC 13818-2 H.262 MPEG-2 stream_type 0x02 Audio ISO/IEC 14496-3 MPEG-L2 stream _type 0x04 Audio ISO/IEC 14496-3 AAC-LC ADTS stream_type 0x0F Video for mobile TV ISO/IEC 14496-10 H.264 stream_type 0x1B Audio ISO/IEC 14496-3 HE-AAC ADT stream _type 0x0F Video for HDTV and SDTV and mobile TV Video ISO/IEC 14496-10 H.264 video stream_type 0x1B Audio ISO/IEC 14496-3 AAC-LATM/LOAS stream_type 0x11 SEI for active format description ITU-RT.35 Video coding Multiplexer Limited- reception processor Sound coding TS remultiplexing Source coding Data coding Video Sound BTS structure Information part or ISDB-T_Information_Packet Multiplex position 8 byte 188 byte 8 byte Parity (option) Data TS TS A + B + C C B A 12 10 8 6 4 2 0 1 3 5 7 9 11 Layer A Layer B Layer B Layer C Stationary reception Mobile reception Layer C Mode Mode 1 (2K) Mode 2 (4K) Mode 3 (8K) Bandwidth 5.573 MHz Sample frequency 512/63 MHz = 8.126984 MHz Number of carriers Total 108 × 13 + 1 = 1 405 216 × 13 + 1 = 2 809 432 × 13 + 1 = 5 617 Data 96 × 13 = 1 248 192 × 13 = 2 496 384 × 13 = 4 992 Effective symbol length 252 μs 504 μs 1008 μs Carrier modulation QPSK, 16QAM, 64QAM, DQPSK ISDB-T/ISDB-T B : The Versatile Standards TV, Mobile TV and Sound Broadcasting The Japanese approach to digital terrestrial TV is terrestrial integrated services digital broadcasting (ISDB-T) and was adopted in 1999. A special form of ISDB-T is the 1-segment mode (partial reception), which is used for mobile TV applications. For terrestrial digital sound broadcasting ISDB-T sb has been created by adapting the spectral bandwidth and omitting the video content. Parts of Latin America adopted the ISDB-T standard for terrestrial broadcasting under the name ISDB-T B with slight changes in the content layer. Key performance features of ISDB-T/ISDB-T B : Simultaneous broadcasting of HD, SD and mobile TV J content in one channel Orthogonal frequency division multiplexing (OFDM) for J robustness and single frequency networks (SFN) Divison of one channel into 13 segments for flexible J spectrum allocation Segments can be allocated to transmission layers A, B, C J Bit and time interleaving for improved mobile and indoor J reception Selection of Rohde & Schwarz solutions for ISDB-T/ISDB-T B ¸SFE100 test transmitter ¸SFU broadcast test system ¸SFE broadcast tester ¸DVSG digital video signal generator ¸ETL TV analyzer Rohde & Schwarz TV transmitters Full range of ISDB-T/ISDB-T B transmitters & transposers PD 5214.2856.82 V 01.00 (sv) Rohde & Schwarz provides a wide variety of transmitter and test & measurement products for the major global standards. Over 50 years of experience in sound and TV broadcast applications make Rohde & Schwarz a quali- fied partner for network operators and electronic equip- ment manufacturers. Glossary: AAC = Advanced Audio Coding; ABNT = Associação Brasileira de Normas Técnicas; ABNT NBR = ABNT technical standard; ADTS = Audio Data Transport Stream; ARIB = Association of Radio Industries and Businesses; BTS = Broadcasting Transport Stream; ETSI = European Telecommunications Standards Institute; HD = High Definition; IEC = International Electrotechnical Commission; IFFT = Inverse Fast Fourier Transformation; ISDB = Integrated Services Digital Broadcasting; ISDB-T = ISDB for Terrestrial Television Broadcasting; ISDB-TB = ISDB for Terrestrial Television Broadcasting Brazil; ISO = International Organization for Standardization; MPEG = Moving Picture Experts Group; MSB = Most Significant Bit; NIT = Network Information Table; OFDM = Orthogonal Frequency Division Multiplex; QAM = Quadrature Amplitude Modulation; QPSK = Quadrature Phase Shift Keying; SD = Standard Definition; TMCC = Transmission and Multiplexing Configuration Control; TS = Transport Stream; TV = Television BTS multiplexer Baseband structure Constellation TMCC parameter Transmission spectrum OFDM parameter ISDB-T/ISDB-T B block diagram ¸ ¸ ¸ ¸E E ET T TL L L T T T T T T TV V V V V V V V V a a a an n n na a al l ly y yz z z ze e er r r
Transcript of B TV, Mobile TV and Sound Broadcasting · 2016. 1. 29. · ISDB-T ISDB-T B ABNT NBR – 15602 –...
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www.rohde-schwarz.com/technology/isdb-t
MPEG-2multiplexer
TSremultiplex
Guardintervaladdition
OFDM
fram
e st
ruct
ure
Freq
uenc
y in
terle
avin
g
Tim
e in
terle
avin
g
Com
bini
ng o
f hie
rarc
hica
l lev
els
IFFT
Bit interleaving
Carrier modulation fs: MHz = 8.126984 MHz63512
Mapping
Bit interleaving
Carrier modulation
Mapping
Bit interleaving
Carrier modulation
Mapping
Pilot signals
TMCC signal
Convolutionalcoding
Bytes –> bitsBytes –> bits Bits –> bytes Byteinterleaving
Delayadjust-ment
Energydispersal
Convolutionalcoding
Bytes –> bitsBytes –> bits Bits –> bytes Byteinterleaving
Delayadjust-ment
Outercode
(204,188)
Divisionof TS into
hierarchicallevels
Energydispersal
Convolutionalcoding
Bytes –> bitsBytes –> bits Bits –> bytes Byteinterleaving
Delayadjust-ment
Energydispersal
ISDB-T ISDB-TBABNT NBR– 15602– 15603
Japanese and Chinese character setARIB STD-B24
ARIB STD-B10ARIB TR-B14
MPEG-2ISO/IEG 13818-1
DVBETSI EN 300468
Differences to DVBNIT with ISDB system management descriptor with:– ISDB TS information descriptor– ISDB partial reception descriptor– ISDB terrestrial delivery system descriptorAdditional EITs for different screens (signaled in SDT)Additional ISDB tables + ISDB descriptorsSettings for mobile TV (partial reception)Transmitting control
Video for HDTV and SDTVISO/IEC 13818-2 H.262 MPEG-2 stream_type 0x02Audio ISO/IEC 14496-3 MPEG-L2 stream _type 0x04Audio ISO/IEC 14496-3 AAC-LC ADTS stream_type 0x0FVideo for mobile TVISO/IEC 14496-10 H.264 stream_type 0x1BAudio ISO/IEC 14496-3 HE-AAC ADT stream _type 0x0F
Video for HDTV and SDTV and mobile TVVideo ISO/IEC 14496-10 H.264 video stream_type 0x1BAudio ISO/IEC 14496-3 AAC-LATM/LOAS stream_type 0x11SEI for active format description ITU-RT.35
Video coding MultiplexerLimited-receptionprocessor
Sound coding
TS re
mul
tiple
xing
Source coding
Data coding
Video
Sound
BTS structureInformation part or
ISDB-T_Information_PacketMultiplexposition
8 byte188 byte 8 byte
Parity(option)
Data
TS
TS
A + B + CC
BA
1210864201357911
Layer ALayer B Layer BLayer C
Stationary reception Mobile reception
Layer CMode Mode 1 (2K) Mode 2 (4K) Mode 3 (8K)Bandwidth 5.573 MHz
Sample frequency 512/63 MHz = 8.126984 MHz
Number of carriersTotal 108 × 13 + 1 = 1 405 216 × 13 + 1 = 2 809 432 × 13 + 1 = 5 617
Data 96 × 13 = 1 248 192 × 13 = 2 496 384 × 13 = 4 992
Effective symbol length 252 μs 504 μs 1008 μs
Carrier modulation QPSK, 16QAM, 64QAM, DQPSK
ISDB-T/ISDB-TB: The Versatile StandardsTV, Mobile TV and Sound BroadcastingThe Japanese approach to digital terrestrial TV is terrestrial integrated services digital broadcasting (ISDB-T) and was adopted in 1999. A special form of ISDB-T is the 1-segment mode (partial reception), which is used for mobile TV applications. For terrestrial digital sound broadcasting ISDB-Tsb has been created by adapting the spectral bandwidth and omitting the video content. Parts of Latin America adopted the ISDB-T standard for terrestrial broadcasting under the name ISDB-TB with slight changes in the content layer.
Key performance features of ISDB-T/ISDB-TB: Simultaneous broadcasting of HD, SD and mobile TV Jcontent in one channelOrthogonal frequency division multiplexing (OFDM) for Jrobustness and single frequency networks (SFN)Divison of one channel into 13 segments for fl exible Jspectrum allocationSegments can be allocated to transmission layers A, B, C JBit and time interleaving for improved mobile and indoor Jreception
Selection of Rohde & Schwarz solutions for ISDB-T/ISDB-TB
¸SFE100 test transmitter¸SFU broadcast test system
¸SFEbroadcast tester
¸DVSG digitalvideo signal generator
¸ETL TV analyzer Rohde & Schwarz TV transmittersFull range of ISDB-T/ISDB-TB transmitters & transposers P
D 5
214.
2856
.82
V 0
1.00
(sv)
Rohde & Schwarz provides a wide variety of transmitter and test & measurement products for the major global standards. Over 50 years of experience in sound and TV broadcast applications make Rohde & Schwarz a quali-fi ed partner for network operators and electronic equip-ment manufacturers.
Glossary:AAC = Advanced Audio Coding; ABNT = Associação Brasileira de Normas Técnicas; ABNT NBR = ABNT technical standard; ADTS = Audio Data Transport Stream; ARIB = Association of Radio Industries and Businesses; BTS = Broadcasting Transport Stream; ETSI = European Telecommunications Standards Institute; HD = High Defi nition; IEC = International Electrotechnical Commission; IFFT = Inverse Fast Fourier Transformation; ISDB = Integrated Services Digital Broadcasting; ISDB-T = ISDB for Terrestrial Television Broadcasting; ISDB-TB = ISDB for Terrestrial Television Broadcasting Brazil; ISO = International Organization for Standardization; MPEG = Moving Picture Experts Group; MSB = Most Signifi cant Bit; NIT = Network Information Table; OFDM = Orthogonal Frequency Division Multiplex; QAM = Quadrature Amplitude Modulation; QPSK = Quadrature Phase Shift Keying; SD = Standard Defi nition; TMCC = Transmission and Multiplexing Confi guration Control; TS = Transport Stream; TV = Television
BTS multiplexerBaseband structure Constellation
TMCC parameterTransmission spectrumOFDM parameter
ISDB-T/ISDB-TB block diagram
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ISDB-T-_po_en_5214-2856-82_v0100.indd 1ISDB-T-_po_en_5214-2856-82_v0100.indd 1 09.03.2010 09:45:2909.03.2010 09:45:29
