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Method for encoding and modulating physical frame signaling channel in NGB-W system

A modulation method and physical frame technology, applied in the field of physical layer transmission, can solve problems such as the inability to guarantee the relative stability of signaling transmission performance, and achieve the effect of reliability and stability

Active Publication Date: 2015-05-13
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0009] (4) The DVB-T2 standard only supports one L1-pre signaling structure, and the length is fixed at 200 bits. This scheme cannot guarantee the relative stability of the signaling transmission performance of the variable length

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  • Method for encoding and modulating physical frame signaling channel in NGB-W system
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  • Method for encoding and modulating physical frame signaling channel in NGB-W system

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Embodiment Construction

[0046] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0047] It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual impleme...

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Abstract

The invention discloses a method for encoding and modulating a physical frame signaling channel in an NGB-W system. The method comprises the following steps of: adding CRC (cyclic redundancy code) bits to physical frame signaling and scrambling the physical frame signaling; mapping the scrambled physical frame signaling into BCH (Broadcast Channel) code information bits; performing forward error correction coding to the BCH code information bits by BCH coding and LDPC (Low Density Parity Check) coding cascade methods; generating physical frame signaling check bits and forming physical frame signaling coding blocks; performing constellation mapping to the physical frame signaling coding blocks to generate BICM (Bit Interleaved Coded Modulation) blocks. The method is characterized in that a forward error correction coding solution with a reasonable structure and parameters, and LDPC codes including a QC-Raptor-Like structure and approaching a Claude Elwood Shannon threshold are adopted, and bit mapping of information with the changeable signaling length, code rate control and coding block generation can be supported; the physical frame signaling with the changeable length can be protected so that the transmission reliability of the physical frame signaling is relatively steady along with the change of the signaling length.

Description

technical field [0001] The invention relates to the technical field of physical layer transmission in a communication system, in particular to a method for encoding and modulating physical frame signaling in a Next Generation Broadcast Network-Wireless (NGB-W) system. Background technique [0002] With the rapid development of the world's economy and culture, users' demand for wireless information services is increasing rapidly. Relying solely on the traditional wireless broadcast network or the traditional wireless two-way communication network, it has been impossible to realize the optimal transmission of information services. At the same time, people are no longer satisfied with watching traditional wireless broadcast TV services, but have increasingly strong demands for new wireless broadcast TV services. The NGB-W system can realize the fusion and coexistence of wireless broadcasting and wireless two-way communication. It is an effective way to solve the contradiction ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04N21/2383
CPCH04L1/0008H04L1/0058H04L1/0063H04L1/0065H04N21/2383
Inventor 王芳徐扬田金凤王晓妮寇亚军李明齐缪军封松林
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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