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Anti-interference transmission method of mobile digital broadcast signals

A broadcast signal and mobile digital technology, applied in the field of mobile communication, can solve problems such as system performance deterioration, signal spectrum changes, mutual interference, etc.

Inactive Publication Date: 2013-08-21
李金凤
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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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  • Anti-interference transmission method of mobile digital broadcast signals
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  • Anti-interference transmission method of mobile digital broadcast signals

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

[0036] 1) The certain anti-interference mobile digital 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;

[0037] 2) The certain anti-jamming mobile digital broadcasting signal transmitter forms FFT bit interleaving code in the frequency domain after undergoing multi-rate punctured convolution coding, bit interleaving, symbol modulation and symbol rotat...

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Abstract

The invention discloses an anti-interference transmission method of mobile digital broadcast signals, which is a mixed transmission scheme of time domain and frequency domain. The method has the advantages of low PAPR (peak-to-average power ratio), short synchronous time, anti-interference performance, multiple controllable services and the like.

Description

technical field [0001] The invention belongs to the field of mobile communication, and more specifically relates to an anti-jamming mobile digital broadcasting 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 ...

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 李金凤