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A robust 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, mutual interference, system performance deterioration, etc.

Inactive Publication Date: 2011-11-30
辛秀芹
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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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  • A robust mobile digital broadcasting signal transmission method
  • A robust mobile digital broadcasting signal transmission method
  • A robust 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 robust mobile digital broadcast signal transmission method proposed by the present invention, as shown in figure 1 shown, follow these steps:

[0037] 1) The certain robust 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 robust mobile digital broadcast signal transmitter forms an FFT cascade in the frequency domain after its input data bit stream undergoes BCH encoding, bit interleaving, LDPC encoding, symbol modulation, symbol rotation, and symbol interleaving Interle...

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Abstract

The invention discloses a robust mobile digital broadcast signal transmitting method, and relates to a time domain / frequency domain mixed transmission scheme. The robust mobile digital broadcast signal transmitting method has the advantages of low peak-to-average power ratio, short synchronization time, robustness, controllable multiple services and the like.

Description

technical field [0001] The invention belongs to the field of mobile communication, and more specifically relates to a robust 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 the key...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04L25/03H04L1/00
Inventor 郑紫微徐铁峰聂秋华何加铭
Owner 辛秀芹
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