b tv, mobile tv and sound broadcasting · 2016. 1. 29. · isdb-t isdb-t b abnt nbr – 15602 –...

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MPEG-2multiplexer

TSremultiplex

Guardintervaladdition

OFDM

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Freq

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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

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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

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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