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Noise-resistance mobile signal transmission method for digital broadcasting single frequency network

A digital broadcasting and mobile signal technology, applied in the field of mobile communication, can solve problems such as mutual interference, signal distortion, and system performance deterioration

Inactive Publication Date: 2013-10-30
陈杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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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  • Noise-resistance mobile signal transmission method for digital broadcasting single frequency network
  • Noise-resistance mobile signal transmission method for digital broadcasting single frequency network
  • Noise-resistance mobile signal transmission method for digital broadcasting 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-noise 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 encoded data block in the frequency domain after the input data bit stream undergoes LDPC encoding, symbol modulation and sym...

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Abstract

The invention discloses a noise-resistance mobile signal transmission method for a digital broadcasting single frequency network, which is a time domain, frequency domain and space domain hybrid transmission scheme. The method has the advantages of low peak-to-average power ratio, short synchronous time, channel noise resistance, controllability in 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-noise mobile signal transmission method. Background technique [0002] Digital broadcast anti-noise mobile signal transmitter transmission technology is the key technology of digital TV mobile digital broadcasting system, which plays a decisive role in the performance of the whole system and is the object of everyone's key research. Orthogonal Frequency Division Multiplexing (OFDM) multi-carrier transmission technology has many advantages such as simple structure, high spectrum utilization, and resistance to frequency selectivity and channel time variation, so it has attracted everyone's attention and has been deeply researched and used in Xdsl, It is widely used in many fields such as broadband mobile communication, broadband mobile local area network, digital TV and mobile digital broadcasting. The high peak-...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04L25/03H04L1/00
Inventor 郑紫微徐铁峰聂秋华何加铭
Owner 陈杰
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