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A kind of anti-noise transmission method of digital broadcasting mobile signal

A mobile signal and digital broadcasting technology, applied in the field of mobile communication, can solve the problems of sub-channel orthogonality destruction, system performance deterioration, signal distortion, etc.

Inactive Publication Date: 2011-12-07
TONGLING ZHAOLIN IND & TRADE CO LTD
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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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  • A kind of anti-noise transmission method of digital broadcasting mobile signal
  • A kind of anti-noise transmission method of digital broadcasting mobile signal
  • A kind of anti-noise transmission method of digital broadcasting mobile signal

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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 mobile signal anti-noise transmission method proposed in the present invention, as shown in FIG. figure 1 shown, follow these steps:

[0037] 1) The digital broadcast mobile 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) The anti-noise transmitter of a digital broadcasting mobile signal forms an FFT encoded data block in the frequency domain after its input data bit stream undergoes LDPC encoding, symbol modulation and symbol rotation, and the length of the FFT encoded data block is K Th...

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Abstract

The invention discloses an anti-noise transmission method of digital broadcasting mobile signals, which is a time-domain and frequency-domain hybrid transmission scheme. The anti-noise transmission method of the digital broadcasting mobile signals disclosed by the invention has the advantages of low peak-to-average power ratio, short synchronous time, noise resistance, controllable multi-service and the like.

Description

technical field [0001] The invention belongs to the field of mobile communication, and more specifically relates to a method for anti-noise transmission of digital broadcasting mobile signals. Background technique [0002] At present, television broadcasting has gradually developed from analog to digital. Digital TV digital broadcasting mobile transmission system, as an important part of digital TV mobile 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, mobile 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 broadcast mobile related technologies, the current focus of countries is how to provide low-cost reliable high-speed mobile implementation solutions for digital TV digital broadcast...

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 TONGLING ZHAOLIN IND & TRADE CO LTD
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