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Coding and Modulation Methods for Logical Frame Signaling Channels in ngb‑w Systems

A modulation method and signaling channel technology, which are applied in the field of physical layer transmission and can solve the problem of inability to take account of large-scale changes in signaling length.

Active Publication Date: 2017-11-03
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This code rate control method cannot take into account the large-scale changes in the signaling length between 278 and 7031

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  • Coding and Modulation Methods for Logical Frame Signaling Channels in ngb‑w Systems
  • Coding and Modulation Methods for Logical Frame Signaling Channels in ngb‑w Systems
  • Coding and Modulation Methods for Logical Frame Signaling Channels in ngb‑w Systems

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Embodiment Construction

[0076] 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.

[0077] 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 logical frame signaling channel in an NGB-W system. The method comprises the following steps of: adding CRC (cyclic redundancy code) bits to logical frame signaling and dividing the logical frame signaling into blocks; scrambling the logical frame signaling block; mapping the scrambled logical frame signaling block into BCH (Broadcast Channel) code information bits; performing forward error correction coding to the BCH code information bits; generating the coding block of the logical frame signaling block; generating logical frame signaling coding bit sequences; generating bit interleaving blocks; performing constellation mapping to the bit interleaving blocks to generate BICM (Bit Interleaved Coded Modulation) blocks. According to the method, the logical frame signaling with any length can be transmitted, so that the different-length logical frame signaling is basically uniform in transmission reliability; four levels of transmission reliability and transmission efficiency are selected under each modulating method.

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 coding and modulating logical 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 bet...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04N21/2383
Inventor 王芳徐扬寇亚军李明齐缪军封松林
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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