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Anti-fading method for transmitting digital wireless broadcast signal

A technology for digital wireless broadcasting and signal transmission, applied in digital transmission systems, transmission systems, shaping networks in transmitters/receivers, etc., can solve problems such as sub-channel orthogonality destruction, system performance deterioration, and signal distortion

Inactive Publication Date: 2013-07-24
吴梅
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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-fading method for transmitting digital wireless broadcast signal
  • Anti-fading method for transmitting digital wireless broadcast signal
  • Anti-fading method for transmitting digital wireless broadcast signal

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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 wireless 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 wireless 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 wireless broadcast signal transmitter flows its input data bit stream through RS coding, convolutional interleaving, multi-rate punctured convolutional coding, symbol modulation, and symbol interleaving to form in the frequency domain FF...

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Abstract

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

Description

Technical field [0001] The invention belongs to the field of wireless communication, and more particularly relates to a method for transmitting anti-fading digital wireless 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 technolog...

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 吴梅
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