www.rohde-schwarz.com/technology/isdb-t

MPEG-2multiplexer

TSremultiplex

Guardintervaladdition

OFD

M f

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ure

Freq

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terl

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ng

Tim

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terl

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Com

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IFFT

Bit interleaving

Carrier modulation fs: MHz = 8.126984 MHz

63512

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-TB

ABNT 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 r

emul

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 Standards

TV, 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 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 fl exible 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-TB

¸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-TB transmitters & transposers P

D 5

21

4.2

85

6.8

2 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-

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