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Framing method of isomorphic data in two domains in use for ground digital TV transmission system

A terrestrial digital television and transmission system technology, applied in the field of television transmission

Inactive Publication Date: 2006-07-05
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Application Information

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Problems solved by technology

Both of these two systems have been applied in the market, and it is still unclear which method will have more development prospects in the face of the application of complex terrestrial mobile channels.

Method used

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  • Framing method of isomorphic data in two domains in use for ground digital TV transmission system
  • Framing method of isomorphic data in two domains in use for ground digital TV transmission system
  • Framing method of isomorphic data in two domains in use for ground digital TV transmission system

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Embodiment Construction

[0065] The present invention is mainly figure 2 Enhanced channel control information or dedicated data inserter 12, independent logical sub-channel 13, time-domain or frequency-domain processing selector 14 and PN frame forming module 17. All of them can be realized through FPGA (Field Programmable Gate Array). In concrete implementation, figure 2 The n in can be 32, the data frame after adding short PN and long PN can refer to Figure 5 The structure shown is realized, but it can also be properly adjusted according to the performance requirements of the specific terrestrial digital television system.

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Abstract

The invention is a system framing structure for use in using the system framing module to implement process of time domain and frequency domain. The system frame is processed through the selector to select frequency domain processing mode or time domain processing mode. The system information for selecting both domains can be implemented by sending short PN code with different phases. The invention can make the ground digital TV broadcasting system to implement the integration process of time domain and frequency domain and to implement unified process for the single carrier and multi carrier.

Description

technical field [0001] The invention belongs to the technical field of television transmission, and in particular relates to the transmission technique of terrestrial digital television. Background technique [0002] At present, the terrestrial digital TV transmission standards / schemes at home and abroad are as follows: [0003] 1) American terrestrial digital television transmission standard ATSC (implemented since 1995) [0004] 2) European terrestrial digital television transmission standard DVB-T (implemented since 1997) [0005] 3) Japanese terrestrial digital television transmission standard ISDB-T (to be implemented) [0006] 4) Tsinghua University's terrestrial digital TV transmission solution DMB-T [0007] 5) Shanghai Jiaotong University's terrestrial digital TV transmission solution ADTB [0008] 6) The terrestrial digital TV transmission scheme SMCC & SMCC-plus of the University of Electronic Science and Technology of China [0009] 7) TiMi, the terrestrial ...

Claims

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Application Information

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IPC IPC(8): H04N7/24H04L27/00
Inventor 朱维乐
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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