Anti-interference wireless multimedia broadcast signal framing modulation method

A multimedia broadcasting and signal technology, applied in multi-frequency code system, shaping network in transmitter/receiver, digital transmission system, etc.

Inactive Publication Date: 2012-01-04
广德睿纳鲜果酒业有限公司
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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-jamming wireless multimedia b...

Method used

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  • Anti-interference wireless multimedia broadcast signal framing modulation method
  • Anti-interference wireless multimedia broadcast signal framing modulation method
  • Anti-interference wireless multimedia broadcast 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 wireless multimedia broadcasting signal framing modulation method proposed by the present invention, as figure 1 shown, follow these steps:

[0034] 1) The certain anti-jamming wireless multimedia broadcasting signal transmitter forms an FFT bit-interleaved coded modulation data block in the frequency domain after undergoing multi-rate punctured convolutional coding, bit interleaving, and symbol modulation of its input data bit stream, FFT stands for Fast Discrete Fourier Transform, and the length of FFT bit-interleaving coded modulation data block is K; multi-code-rate punctured convolutional coding is performed on the input data, bit-interleaved, and coded by symbol modulation. The rate is one of 1 / 4, 1 / 2, 5 / 8, 3 / 4 and 7 / 8, the bit interleaving adopts random inte...

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Abstract

The invention discloses an anti-interference wireless multimedia broadcast signal framing modulation method, which is a time domain/frequency domain combined framing modulation scheme. The anti-interference wireless multimedia broadcast signal framing modulation 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 an anti-interference wireless 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 fr...

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 广德睿纳鲜果酒业有限公司
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