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A digital broadcast wireless signal anti-noise transmission method

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

Inactive Publication Date: 2011-11-30
陈培稳
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  • Abstract
  • Description
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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 anti-noise transmission method
  • A digital broadcast wireless signal anti-noise transmission method
  • A digital broadcast wireless signal anti-noise 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 of a digital broadcast wireless signal anti-noise transmission method according to the present invention, as shown in FIG. figure 1 shown, follow these steps:

[0037] 1) The certain digital broadcast wireless signal anti-noise 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) This certain digital broadcast wireless signal anti-noise transmitter forms the FFT coded data block on the frequency domain through the LDPC code of its input data bit stream, FFT represents fast discrete Fourier transform, and the length of the FFT coded da...

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Abstract

The invention discloses an anti-noise digital broadcast wireless signal transmitting method, and relates to a time domain / frequency domain mixed scheme. The anti-noise digital broadcast wireless signal transmitting method has the advantages of low peak-to-average power ratio, short synchronization time, resistance to channel noise, controllable multiple services and the like.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more specifically relates to a method for anti-noise transmission of digital broadcast wireless signals. 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 technologies is closely related to people's quality of life, and therefore has received extensive attention from people. Digital TV, digital broadcasting and wireless related technologies and related industries are industries with rapid development and good market prospects in the field of communication and computer. In terms of digital TV digital broadcasting wireless related technologies, countries are currently focusing on how to provide low-cost, reliable and high-speed mobile implementation solutions for digita...

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 陈培稳
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