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Method for transmitting digital mobile broadcast signal

A mobile broadcasting and signal transmission technology, applied in the field of digital mobile broadcasting signal transmission, can solve the problems of signal distortion, sub-channel orthogonality destruction, system performance deterioration, etc.

Inactive Publication Date: 2013-07-24
路爱红
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Method for transmitting digital mobile broadcast signal
  • Method for transmitting digital mobile broadcast signal
  • Method for transmitting digital mobile broadcast signal

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Embodiment Construction

[0035] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] A schematic diagram of an embodiment of signal transmission between a certain transmitter and a receiver according to the digital mobile broadcast signal transmission method proposed by the present invention, as shown in FIG. figure 1 shown, follow these steps:

[0037] 1) The digital mobile broadcast signal transmitter 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;

[0038] 2) The certain digital mobile broadcast signal transmitter forms an FFT coded data block in the frequency domain through serial concatenated multi-rate punctured convolution coding, symbol modulation and symbol rotation on its input data bit stream, and the FFT Indicates the fast d...

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Abstract

The invention discloses a method for transmitting a digital mobile broadcast signal, which is a transmission proposal of time domain and frequency domain mixing. The method for transmitting a digital mobile broadcast signal disclosed by the invention has the advantages of low peak-to-average power ratio, short synchronization time, fading noise influence resistance, controllable multi-service etc.

Description

technical field [0001] The invention belongs to the field of mobile communication, and more specifically relates to a digital mobile broadcast signal transmission method. Background technique [0002] At present, television broadcasting has gradually developed from analog to digital. Digital TV mobile multimedia broadcasting transmission system, as an important part of digital TV mobile multimedia 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 mobile multimedia 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 technologies related to digital TV and digital mobile broadcasting, countries are currently focusing on how to provide low-cost, reliable and high-speed mobile implementation solutions for digital TV and digital mob...

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 路爱红
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