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Wireless digital broadcast signal transmission method for single frequency network

A technology for digital broadcasting and signal transmission, applied in the field of wireless communication, which can solve problems such as mutual interference, system performance deterioration, and signal distortion.

Inactive Publication Date: 2014-03-26
汪海霞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The high peak-to-average power ratio (PAPR) of OFDM signals has high requirements on the linear range of amplifiers and digital-to-analog converters. If the linear range of the system cannot meet the signal changes, it will cause signal distortion and signal spectrum changes. , resulting in the destruction of the orthogonality between the sub-channels, resulting in mutual interference and deteriorating system performance

Method used

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  • Wireless digital broadcast signal transmission method for single frequency network
  • Wireless digital broadcast signal transmission method for single frequency network
  • Wireless digital broadcast signal transmission method for single frequency network

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Embodiment Construction

[0034] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0035] According to the embodiment of the signal transmission between the transmitter and the receiver of the single frequency network wireless digital broadcast signal transmission method proposed by the present invention (assuming that there are N transmitters in the single frequency network), as figure 1 shown, follow these steps:

[0036] 1) The central data manager of the single frequency network converts the multimedia data stream into a bit stream through the media data processor, and uses the scrambling code sequence generated by the feedback shift register to perform scrambling processing to form an input data bit stream;

[0037] 2) The network data manager of the single frequency network forms an FFT data block on the frequency domain with the input data bit stream, and FFT represents fast discrete Fourier transform, and the length ...

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Abstract

The invention discloses a wireless digital broadcast signal transmission method for a single frequency network, and belongs to a time domain, frequency domain and space domain mixed transmission scheme. The wireless digital broadcast signal transmission method for the single frequency network has the advantages of low peak-to-average power ratio, short synchronous time, channel fading resistance, controllable multi-service and the like.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more specifically relates to a single frequency network wireless digital broadcasting signal transmission method. Background technique [0002] Digital TV wireless digital broadcasting transmission system, as an important part of digital TV wireless digital broadcasting, the development of its related technologies is closely related to people's quality of life, and therefore has received extensive attention from people. Digital TV wireless digital broadcasting related technologies and related industries are industries with rapid development and good market prospects in the field of communication and computer. In terms of related technologies of digital TV wireless digital broadcasting, countries are currently focusing on how to provide low-cost, reliable and high-speed mobile implementation solutions for digital TV wireless digital broadcasting in a complex wave propagation environment. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L25/03H04L1/00
Inventor 郑紫微徐铁峰聂秋华何加铭
Owner 汪海霞
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