A framing modulation method of anti-noise multimedia wireless broadcasting signal

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

Inactive Publication Date: 2011-11-30
广德睿纳鲜果酒业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] Aiming at the problem of high data rate controllable multi-service digital TV anti-noise multimedia wireless broadc

Method used

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  • A framing modulation method of anti-noise multimedia wireless broadcasting signal
  • A framing modulation method of anti-noise multimedia wireless broadcasting signal
  • A framing modulation method of anti-noise multimedia wireless broadcasting signal

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

[0034] 1) The certain anti-noise multimedia wireless broadcasting signal transmitter forms an FFT bit-interleaved coded modulation data block in the frequency domain after its input data bit stream undergoes LDPC coding, bit interleaving, and symbol modulation, and FFT stands for Fast Discrete Fourier Transform , the length of the FFT bit-interleaved coding modulation data block is K; the coding rates of LDPC coding for input data are 1 / 4, 1 / 2, 5 / 8, 3 / 4 and LDPC coding, bit interleaving, and symbol modulation processing One of 7 / 8, the bit interleaving adopts random interleaving, the symbol modulation is one of QPSK, 16QAM, 32Q...

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Abstract

The invention discloses an anti-noise multimedia wireless broadcast signal framing modulation method, which is a time domain/frequency domain combined framing modulation scheme. The anti-noise multimedia wireless broadcast signal framing modulation method has the advantages of low peak-to-average power ratio, short synchronization time, anti-noise 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-noise multimedia wireless broadcast 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 framing modu...

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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