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Anti-fading wireless digital broadcast signal transmitting method

A digital broadcasting, anti-fading technology, applied in digital transmission system, transmission system, shaping network in transmitter/receiver, etc., can solve problems such as system performance deterioration, sub-channel orthogonality destruction, signal spectrum change, etc.

Inactive Publication Date: 2011-11-23
广德睿纳鲜果酒业有限公司
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  • 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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  • Anti-fading wireless digital broadcast signal transmitting 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 anti-fading wireless digital broadcast signal transmission method proposed by the present invention, as shown in FIG. figure 1 shown, follow these steps:

[0037] 1) The certain anti-fading wireless 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 anti-fading wireless digital broadcasting signal transmitter forms FFT concatenated interleaving coded modulation in the frequency domain after its input data bit stream undergoes RS coding, convolutional interleaving, LDPC coding, sy...

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Abstract

The invention discloses an anti-fading wireless digital broadcast signal transmitting method, which relates to a time domain-frequency domain hybrid transmitting scheme. The anti-fading wireless digital broadcast signal transmitting method has the advantages of low peak-to-average power ratio, short synchronization time, fading resistance, multi-service controllability, and the like.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more specifically relates to an anti-fading wireless 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 ...

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 广德睿纳鲜果酒业有限公司
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