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A digital broadcast single frequency network anti-jamming wireless signal transmission method

A technology of digital broadcasting and wireless signals, applied in the field of wireless communication, can solve the problems of sub-channel orthogonality destruction, mutual interference, system performance deterioration, etc.

Active Publication Date: 2011-11-30
ANHUI SAFE ELECTRONICS
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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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  • A digital broadcast single frequency network anti-jamming wireless signal transmission method
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  • A digital broadcast single frequency network anti-jamming wireless signal transmission method

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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 schematic diagram of an embodiment of the signal transmission between the transmitter and the receiver of the digital broadcast single frequency network anti-jamming wireless signal transmission method proposed by the present invention, as shown in FIG. 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-code rate punctured convolution coding, bit interleaving, and symbol modul...

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Abstract

The invention discloses an anti-interference wireless signal transmission method for a digital broadcast single-frequency network. The method is a time domain / frequency domain / space domain combined transmission scheme. The anti-interference wireless signal transmission method has the advantages of low peak-to-average power ratio, short synchronization time, anti-interference performance, multi-service controllability and the like.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more specifically relates to a digital broadcast single frequency network anti-jamming wireless 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 relatively...

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 ANHUI SAFE ELECTRONICS
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