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An anti-fading mobile digital broadcasting signal transmission method

A mobile digital and broadcast signal technology, applied in the field of mobile communication, can solve the problems of sub-channel orthogonality destruction, system performance deterioration, signal distortion and other problems

Inactive Publication Date: 2011-11-30
曾晓燕
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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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  • An anti-fading mobile digital broadcasting signal transmission method
  • An anti-fading mobile digital broadcasting signal transmission method
  • An anti-fading mobile digital broadcasting signal transmission method

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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 anti-fading mobile digital broadcasting signal transmission method proposed by the present invention, as shown in FIG. figure 1 shown, follow these steps:

[0037] 1) The certain anti-fading mobile digital broadcast signal transmitter converts the multimedia data stream into a bit stream through a 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 anti-fading mobile digital broadcast signal transmitter forms an FFT level in the frequency domain after its input data bit stream undergoes RS coding, convolutional interleaving, LDPC coding, symbol modulation, symbol rotation, and sy...

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Abstract

The invention discloses a method for transmitting anti-fading mobile digital broadcast signal. The method is a transmission scheme in which a time domain and a frequency domain are mixed. The method for transmitting the anti-fading mobile digital broadcast signal has the advantages of low peak-to-average power ratio, short synchronization time, attenuation resistance, and the like and multiple services can be controlled.

Description

technical field [0001] The invention belongs to the field of mobile communication, and more specifically relates to an anti-fading mobile digital broadcast signal transmission method. Background technique [0002] At present, television broadcasting has gradually developed from analog to digital. Digital TV broadcasting transmission system, as an important part of digital TV broadcasting, the development of its related technologies is closely related to people's quality of life, and therefore has received extensive attention from people. The technology related to digital TV broadcasting 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 broadcasting, countries are currently focusing on how to provide low-cost, reliable and high-speed mobile solutions for digital TV broadcasting in a complex wave propagation environment. Transmission technology is t...

Claims

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Application Information

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