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Anti-fading digital mobile broadcast signal transmission method

A mobile broadcasting and anti-fading technology, applied in the field of mobile communication, can solve problems such as sub-channel orthogonality destruction, mutual interference, and system performance deterioration

Inactive Publication Date: 2011-11-23
刘志军
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  • 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-fading digital mobile broadcast signal transmission method

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Embodiment Construction

[0035] The 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 transmitter and a receiver of the anti-fading digital mobile broadcast signal transmission method according to the present invention, such as figure 1 As shown, proceed as follows:

[0037] 1) The certain anti-fading 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 anti-fading digital mobile broadcast signal transmitter streams its input data bits through RS coding, convolutional interleaving, multi-rate punctured convolutional coding, symbol modulation and symbol rotation, and symbol interleaving. The FFT cascaded interl...

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Abstract

The invention discloses an anti-fading digital mobile broadcast signal transmission method which is a time domain frequency domain mixed transmission scheme. The anti-fading digital mobile broadcast signal transmission method of the present invention has the advantages of low peak-to-average power ratio, short synchronization time, fading resistance, control of multiple services and the like.

Description

Technical field [0001] The invention belongs to the field of mobile communication, and more particularly relates to a method for transmitting anti-fading digital mobile broadcast signals. 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 technology is closely related to people's quality of life, and therefore has attracted special attention. Digital TV broadcasting-related technologies and related industries are industries that develop rapidly in the field of communications and computers and have good market prospects. In terms of digital TV broadcasting-related technologies, the current focus of various countries is how to provide low-cost, reliable and high-speed mobile implementation solutions for digital TV broadcasting in a complex wave propagation environment. Transmission technology is...

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 刘志军
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