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An anti-interference mobile multimedia broadcasting signal framing modulation method

A technology for mobile multimedia and broadcasting signals, applied in multi-frequency code systems, shaping networks in transmitters/receivers, digital transmission systems, etc.

Inactive Publication Date: 2011-12-14
范雪婷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Aiming at the problem of high data rate controllable multi-service digital TV anti-interference mobile multimedia broadcasting, the present invention proposes an anti-interference mobile multimedia broadcasting signal framing modulation method

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  • An anti-interference mobile multimedia broadcasting signal framing modulation method
  • An anti-interference mobile multimedia broadcasting signal framing modulation method
  • An anti-interference mobile multimedia broadcasting signal framing modulation method

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Embodiment Construction

[0032] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] According to an embodiment of a certain transmitter of the anti-jamming mobile multimedia broadcasting signal framing modulation method proposed by the present invention, as figure 1 shown, follow these steps:

[0034] 1) The certain anti-interference mobile multimedia broadcasting signal transmitter forms FFT bit interleaving code in the frequency domain after undergoing multi-rate punctured convolution coding, bit interleaving, symbol modulation and symbol rotation on its input data bit stream Modulation data block, FFT stands for Fast Discrete Fourier Transform, FFT bit interleaving coding modulation data block length is K; multi-code for multi-code rate punctured convolutional coding, bit interleaving, symbol modulation and symbol rotation processing on input data The coding rate of rate punctured convolutional coding is one of 1 / 4...

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Abstract

The invention discloses an anti-interference method for modulating a mobile multimedia broadcast signal by framing, which is a time domain and frequency domain mixed transmission scheme. The anti-interference method for modulating the mobile multimedia broadcast signal by framing has the advantages of low peak-to-average power ratio, short synchronous time, interference resistance, multiple controlled services and the like.

Description

technical field [0001] The invention belongs to the field of mobile communication, and more specifically relates to an anti-interference mobile multimedia broadcasting signal framing modulation method. Background technique [0002] At present, television broadcasting has gradually developed from analog to digital. Digital TV broadcasting transmission system, as an important part of digital TV broadcasting, the development of its related technologies is closely related to people's quality of life, and therefore has received extensive attention from people. The technology related to digital TV broadcasting and related industries are industries with rapid development and good market prospects in the field of communication and computer. In terms of technologies related to digital TV broadcasting, countries are currently focusing on how to provide low-cost, reliable and high-speed mobile solutions for digital TV broadcasting in a complex wave propagation environment. The framin...

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 范雪婷