A digital broadcast wireless signal transmission method

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

Active Publication Date: 2011-11-30
ANHUI SAFE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
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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 digital broadcast wireless signal transmission method
  • A digital broadcast wireless signal transmission method
  • A digital broadcast wireless signal transmission method

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Embodiment Construction

[0033] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] A schematic diagram of an embodiment of signal transmission between a transmitter and a receiver of the digital broadcasting wireless signal transmission method proposed by the present invention, such as figure 1 As shown, proceed as follows:

[0035] 1) The certain digital broadcasting wireless signal transmitter converts the multimedia data stream into a bit stream by 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;

[0036] 2) The certain digital broadcasting wireless signal transmitter forms its own input data bit stream into an FFT data block in the frequency domain. FFT means fast discrete Fourier transform, and the length of the FFT data block is K;

[0037] 3) The certain digital broadcasting wireless signal tra...

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Abstract

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

Description

Technical field [0001] The present invention belongs to the field of wireless communication, and more particularly relates to a digital broadcasting wireless signal transmission method. Background technique [0002] At present, television broadcasting has gradually developed from analog to digital. Digital TV digital broadcasting wireless transmission system, as an important part of digital TV wireless digital broadcasting, the development of its related technology is closely related to people's quality of life, and therefore has attracted special attention. Digital TV, digital broadcasting and wireless-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 and digital broadcasting wireless technologies, the current focus of various countries is how to provide low-cost, reliable and high-speed mobile implementation solutions for digital TV digital broadcas...

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 ANHUI SAFE ELECTRONICS
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