A framing modulation method for anti-noise multimedia mobile broadcasting signal

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

Active Publication Date: 2011-12-14
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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

Method used

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  • A framing modulation method for anti-noise multimedia mobile broadcasting signal
  • A framing modulation method for anti-noise multimedia mobile broadcasting signal
  • A framing modulation method for anti-noise multimedia mobile 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 mobile broadcasting signal framing modulation method proposed by the present invention, as figure 1 shown, follow these steps:

[0034] 1) The certain anti-noise multimedia mobile broadcast signal transmitter forms an FFT bit-interleaved coded modulation data block in the frequency domain after its input data bit stream undergoes LDPC encoding, bit interleaving, symbol modulation and symbol rotation, and FFT represents Fast Discrete Fourier Transform, FFT bit interleaving encoding and modulation data block length is K; the encoding rate of LDPC encoding for input data is 1 / 4, 1 / 2, LDPC encoding, bit interleaving, symbol modulation and symbol rotation processing One of 5 / 8, 3 / 4 and 7 / 8, the bit interleaving adopts random interleaving, the symbol modulation ...

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Abstract

The invention discloses an anti-noise multimedia mobile broadcast signal framing modulation method, and belongs to a time domain and frequency domain mixed framing modulation scheme. The anti-noise multimedia mobile broadcast signal framing modulation method has the advantages of low peak-to-average power ratio, short synchronous time, noise resistance, controllable multi-service and the like.

Description

technical field [0001] The invention belongs to the field of mobile communication, and more specifically relates to a method for framing modulation of an anti-noise multimedia mobile broadcast signal. 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...

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 STATE GRID CORP OF CHINA
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