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Generation method of preamble symbol in next generation radio and television wireless communication system

A wireless communication system and preamble technology, applied in transmission systems, multi-frequency code systems, digital transmission systems, etc., can solve problems such as the inability to achieve optimal transmission of mobile information services, and achieve fractional frequency offset estimation and improvement. Synchronization performance, the effect of realizing timing synchronization

Active Publication Date: 2018-06-05
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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Problems solved by technology

Relying solely on traditional broadcasting networks or traditional two-way communication networks, it is impossible to achieve optimal transmission of mobile information services

Method used

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  • Generation method of preamble symbol in next generation radio and television wireless communication system
  • Generation method of preamble symbol in next generation radio and television wireless communication system
  • Generation method of preamble symbol in next generation radio and television wireless communication system

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Embodiment Construction

[0037] 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.

[0038] 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 provides a generation method for a preamble in a next generation broadcast wireless (NGB-W) communication system. The generation method includes the following steps that quadrature modulation is conducted on leading signaling information; the DBPSK modulation sequence of the preamble is scrambled to obtain the scrambled sequence of the preamble; the scrambled sequence of the preamble is placed on 768 effective subcarriers to generate a main body A; the main body is divided into two parts, frequency offset is conducted on the two parts to generate a postfix and a prefix, and finally the preamble is generated by the prefix, the main body and the postfix. A 4096-point shift-C-A-B structure is adopted for the time domain structure of the preamble, a front frequency offset repeating part and a rear frequency offset repeating part are adopted for the structure, a receiving end rapidly finds signals in the time domain, and OFDM symbol timing synchronization and decimal frequency offset estimation are achieved. By the adoption of 4096 points, on one hand, 12-bit signaling information can be carried; on the other hand, the number of sample points is larger than that of 2048 points, and noise suppression t and synchronization performance improvement are facilitated in a synchronization algorithm.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular, to a method for generating a preamble in a NextGeneration Broadcast Wireless (NGB-W) communication system. Background technique [0002] With the rapid development of world economy and culture, the demand of mobile users for information services is increasing rapidly. Relying solely on the traditional broadcasting network or the traditional two-way communication network, it is impossible to realize the optimal transmission of mobile information services. The next-generation radio and television wireless (NGB-W) communication system can realize the fusion and coexistence of wireless broadcasting and two-way communication, and is an effective way to solve the contradiction between the rapid growth of mobile information service data volume and the limited transmission capacity of wireless networks. [0003] The normal work of the mobile communication system and b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L27/261H04L27/2613
Inventor 杨程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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