A single frequency network anti-noise mobile digital broadcasting signal transmission method

A technology for moving digital and broadcasting signals, applied in the field of mobile communication

Inactive Publication Date: 2011-11-30
冯巧林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] Aiming at the problem of high coded data rate controllable multi-service digital television single frequency network anti-noise mobile di...

Method used

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  • A single frequency network anti-noise mobile digital broadcasting signal transmission method
  • A single frequency network anti-noise mobile digital broadcasting signal transmission method
  • A single frequency network anti-noise mobile digital broadcasting signal transmission method

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Embodiment Construction

[0034] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0035] According to the embodiment of the signal transmission between the transmitter and the receiver of the anti-noise mobile digital broadcast signal transmission method of the single frequency network proposed by the present invention (assuming that there are N transmitters in the single frequency network), as figure 1 shown, follow these steps:

[0036] 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;

[0037] 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 ...

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Abstract

The invention discloses a single-frequency-network anti-noise mobile digital broadcast signal transmission method which is a transmission scheme mixing a time domain, a frequency domain and a spatial domain. By using the single-frequency-network anti-noise mobile digital broadcast signal transmission method of the invention, PAPR is low, synchronization time is short, noise can be resisted, and aplurality of services can be controlled and so on.

Description

technical field [0001] The invention belongs to the field of mobile communication, and more specifically relates to a single frequency network anti-noise mobile digital broadcasting signal transmission method. Background technique [0002] Because OFDM multi-carrier transmission technology has many advantages such as simple structure, high spectrum utilization rate, and resistance to frequency selectivity and channel time variation, it has attracted much attention and has been deeply researched and applied in Xdsl, broadband mobile communication, broadband mobile local area network, It is widely used in many fields such as digital TV, mobile digital broadcasting, etc. 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 ...

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 冯巧林
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