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Method for transmitting anti-interference mobile signals of digital broadcast single-frequency network

A digital broadcasting and mobile signal 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: 2013-10-30
广德睿纳鲜果酒业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The high peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (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 changes the signal spectrum, destroys the orthogonality between sub-channels, generates mutual interference, and deteriorates system performance. It is necessary to consider how to reduce the occurrence probability of large peak power signals in OFDM signals and reduce non- Solutions for Linear Distortion Effects

Method used

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  • Method for transmitting anti-interference mobile signals of digital broadcast single-frequency network
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  • Method for transmitting anti-interference mobile signals of digital broadcast single-frequency network

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Embodiment Construction

[0031] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] According to the embodiment of the signal transmission between the transmitter and the receiver of the digital broadcast single frequency network anti-jamming mobile signal transmission method proposed by the present invention (assuming that there are N transmitters in the single frequency network), as figure 1 shown, follow these steps:

[0033] 1) The central data manager of the single frequency network 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;

[0034] 2) The network data manager of the single frequency network forms an FFT bit-interleaved coded modulation data block in the frequency domain through multi-rate punctured convolutional coding, bit ...

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Abstract

The invention discloses a method for transmitting anti-interference mobile signals of a digital broadcast single-frequency network, and relates to a time domain / frequency domain / air space mixed transmission scheme. The method for transmitting anti-interference mobile signals of the digital broadcast single-frequency network has the advantages of low peak-to-average power ratio, short synchronization time, resistance to interference, controllable multiple services and the like.

Description

technical field [0001] The invention belongs to the field of mobile communication, and more specifically relates to a digital broadcast single frequency network anti-interference mobile signal transmission method. Background technique [0002] The high peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (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 changes the signal spectrum, destroys the orthogonality between sub-channels, generates mutual interference, and deteriorates system performance. It is necessary to consider how to reduce the occurrence probability of large peak power signals in OFDM signals and reduce non- Solutions for linear distortion effects. BICM technology (Bit Interleaved Coded Modulation, BICM) uses a bit interleaver and makes the coding and modulation processes relativel...

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 广德睿纳鲜果酒业有限公司
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