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TTAS Tandards

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TTAS Tandards T TTA Standards Establishment Date : Jun. 29. 2005 TTAS.KO-07.0028 T A Standard for Satellite Digital Multimedia Broadcasting S Transmitter/Receiver Interface t a n Telecommunications Technology d Association a r d s -1- TTA Standards Establishment Date : Jun. 29. 2005 TTAS.KO-07.0028 Standard for Satellite Digital Multimedia Broadcasting Transmitter/Receiver Interface Telecommunications Technology Association The copyright for this document is possessed by TTA, and reproduction and wide distribution of the document, in the whole or a part, aiming at the commercial benefit without permission are prohibited. Copyrightⓒ Telecommunications Technology Associations(2005). All Rights Reserved. -2- Preface 1. Purpose Of Standard This standard is prepared to introduce specify the basic interfaces between the transmitters and the receivers for the domestic "Satellite Digital Multimedia Broadcasting" in the UHF band. 2. Referenced Recommendations and/or Standards 2.1 International Standards [1] ITU-R Rec. BO. 1130-4 ANNEX 6 Digital System E : Systems for digital satellite broadcasting to vehicular, portable and fixed receivers in the bands allocated to BSS (sound) in the frequency range 1MHz [2] ISO/IEC 13818-1/2000/Amendment 3 : Generic coding of moving pictures and associated audio information - Systems [3] ISO/IEC 13818-6 : Generic coding of moving pictures and associated audio information - Extensions for DSM-CC [4] ISO/IEC 13818-7 : Generic coding of moving pictures and associated audio information - Part 7: Advanced Audio Coding (AAC) [5] ISO/IEC 14496-3:2001/Amendment 1 : Bandwidth Extension [6] ISO/IEC 14496-10 AVC : Advanced Video Coding for Generic Audiovisual Services [7] EN 300 468 Digital Video Broadcasting(DVB) : Specification for Service Information(SI) in DVB system [8] ITU, ITU-T REC.H.220.0 Infrastructure of audiovisual services– Transmission multiplexing and synchronization [9] ISO 3166 : Codes for the representation of names of countries and their subdivisions [10] ISO/IEC 8859-1 : 8-bit single-byte coded graphic character sets - Part 1: Latin alphabet No. 1 [11] ISO/IEC 11172-3 : Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s [12] ITU-R Rec BO. 1504 : Effective utilization of spectrum assigned to the broadcasting-satellite service -3- 2.2 Domestic Standards [1] KS X 1005-1 [2] KS X 561001, Ks X 1002 3. Relationship To International Standard(Recommendations) 3.1 Association With International Standards This standard refers to ITU-R Rec. BO. 1130-4, ISO/IEC 13818-1, ISO/IEC 13818-6, ISO/IEC 13818-7, ISO/IEC 14496-3, ISO/IEC 14496-10 for the "Satellite Digital Multimedia Broadcasting". 3.2 Additional Items This standard includes the additional specification of Korean character set in order to meet the requirements of Service information channel. 4. Statement Of Intellectual Property Right: To be (refer to acknowledgment report) 5. Statement Of Conformance Testing And Certification - None 6. History Of Standard Version Issue Date Contents 1.0 2004 . 09. 22. Established -4- Contents Chapter 1. General Rules Clause 1. Purpose Clause 2. Channel bandwidth Clause 3. Occupied frequency bandwidth Clause 4. Definitions Chapter 2. Satellite digital multimedia broadcasting service and system requirements Clause 1. Composition of broadcasting network Clause 2. Service requirement of satellite digital multimedia broadcasting system Clause 3. Reception quality Clause 4. Signal representation format Clause 5. Mutual interference with service Clause 6. Signal delay time Chapter 3. Standard for satellite digital multimedia broadcasting transmitter/receiver interface Clause 1. System overview Clause 2. Transmission mechanism Clause 3. Error correction code Clause 4. Interleaver Clause 5. Service transmission Clause 6. Multiplexing and program specific information / service information Clause 7. Audio/Video Coding Clause 8. CDM modulation section Clause 9. CA: Conditional Access Clause 10. Radio frequency characteristics Clause 11. Bit Error Rate(BER) performance Clause 12. Basic character set in satellite digital multimedia broadcasting Clause 13. Download service(optional) -5- Appendix I Artificial satellite system specifications Appendix II General features of complementary terrestrial repeater Appendix III Guideline on download transmission and receipt Appendix IV Example of structure of satellite digital multimedia broadcasting parameter Appendix V Guideline for composition of satellite digital multimedia broadcasting receiver Appendix VI Abbreviation -6- Chapter 1 General Rules Clause 1. Purpose This standard is focused on service and system requirements, transmission/receipt standard and receiver standard for satellite digital multimedia broadcasting (DMB) with 2.6GHz band. Clause 2. Channel bandwidth Basic bandwidth is 25MHz of 2.6GHz band. Clause 3. Occupied frequency bandwidth Occupied frequency band with is within 20MHz. Clause 4. Definitions 4.1 "Digital multimedia broadcasting" means that broadcasting program signal like digital video, audio and data and etc. is broadcasted in ultra short wave band through satellite transmitting facility for the public to receive its signal. 4.2 "Complementary terrestrial repeater" means the equipment for improving the performance of receiver in dead spot in which receiver can’t receive signal from satellite directly. 4.3 "Satellite digital multimedia broadcasting video service" means the service that is composed of video provided by digital multimedia broadcasting basically, audio joining with the video or its supplementary data. For the rest, it will be called by "video service". 4.4 "Satellite digital multimedia broadcasting audio service" means the service that is composed of audio provided by digital multimedia broadcasting basically and supplementary data joining with the audio. For the rest, it will be called by "audio service". 4.5 "Satellite digital multimedia broadcasting data service" means all services that transmit information independent from video service or audio service provided by digital multimedia broadcasting basically in digital data format. For the rest, it will be called by "data service". It specially follows "Standard for data service transmission and receipt". -7- 4.6 "CDM(Code Division Multiplexing)" means transmission system spreading frequency band and multiplexing signal. 4.7 Satellite digital multimedia broadcasting receiver is the equipment basically receiving satellite signal from satellite directly and providing service. 4.8 Download service means that software upgrade information of receiver is transmitted through broadcasting signal and receiver receives this information and performs upgrade or modification selectively. -8- Chapter 2 Satellite Digital Multimedia Broadcasting Service and System Requirements Clause 1. Composition of broadcasting network (definition) The composition of broadcasting network includes casting equipment, earth station, satellite, complementary terrestrial repeater and subscriber’s receiver and etc. (requirement) Earth station of satellite digital multimedia broadcasting system transmits multiplexed carrier signal to satellite and satellite transmits transmitting signal to subscriber’s receiver directly. As a supplementary transmission method for dead spot, signal is transmitted to subscriber’s receiver through complementary terrestrial repeater. Clause 2. Service requirement of satellite digital multimedia broadcasting system (definition) The function of satellite digital multimedia broadcasting system is to provide digital multimedia broadcasting service using broadband transmission bandwidth according to satellite transmission system. (requirement) It should be able to provide various multimedia broadcasting service including multi-channel audio service, video service and data service and etc. in static reception, portable and mobile receipt environment. Clause 3. Reception quality 3.1 Coverage area It is aimed at providing service in the whole area of Korea. 3.2 Coverage environment It is aimed at achieving hour-rate, space-rate in mobile (over 90, over 90) environment within coverage area. 3.3 Receiver performance in mobile environment within coverage area It is aimed at being ready for receiving at a speed under 200km per hour and in transit. 3.4 Video quality (definition) Video quality means the video quality that end user recognizes. (requirement) It should be able to provide video quality of VCD level at lease based on 5 inches LCD. -9- 3.5 Audio quality (definition) Audio quality means the audio quality that end user recognizes. (requirement) It should be able to provide audio quality corresponding to high quality digital audio media (CD) level and audio level that is provided with video service should be greater than the quality of analog FM. Clause 4. Signal representation format 4.1 Video signal representation format (definition) Video signal representation format means the format in which digital video signal is represented. (requirement) The resolution of video signal should be able to provide 320×240 pixels and 15fps at least. 4.2 Audio signal representation format (definition) Audio signal representation format means the format in which digital audio signal is represented. (requirement) Audio signal should be able to provide 48kHz sampled 2-channel audio service. Clause 5 Mutual interference with service (definition) Mutual interference with service means the mutual interference with broadcasting and communication services in other bands. (requirement)
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