Multimedia broadcasting wireless signal anti-noise transmission method

A multimedia broadcasting and wireless signal technology, applied in digital video signal modification, image communication, television, etc., can solve problems such as impractical application, not being widely used, and excessive calculation of algorithms and encoders

Inactive Publication Date: 2011-06-29
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When LDPC coding was first discovered, it was not widely used in most cases due to the computational complexity of algorithms and encoders being too large for practical application.

Method used

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  • Multimedia broadcasting wireless signal anti-noise transmission method
  • Multimedia broadcasting wireless signal anti-noise transmission method
  • Multimedia broadcasting wireless signal anti-noise transmission method

Examples

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Embodiment Construction

[0043] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0044] An embodiment of signal transmission between a transmitter and a receiver of a method for anti-noise transmission of multimedia broadcasting wireless signals according to the present invention, such as figure 1 As shown, the multimedia broadcast wireless signal is sent to the air channel at the multimedia broadcast wireless transmitter through the following steps, and the receiver terminal receives and processes the signal sent by the multimedia broadcast wireless transmitter:

[0045] 1) The multimedia broadcast wireless transmitter terminal converts the multimedia data stream into a data bit stream through the media data processor;

[0046] 2) The certain multimedia broadcast wireless transmitter end passes the input data bit stream through LDPC encoding (the encoding rate of the LDPC encoding of the input data bit stream on the multimedi...

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Abstract

The invention discloses a multimedia broadcasting wireless signal anti-noise transmission method; in the multimedia broadcasting wireless signal anti-noise transmission method, the multimedia broadcasting wireless signal is at the multimedia broadcasting wireless transmitter terminal, a multimedia data stream is processed by media data processing, bit stream LDPC coding, code element modulation, constellation rotating, frame body formation, time domain training sequence insertion framing, pulse formation and up-conversion to carrier wave to form a radio-frequency signal which is transmitted to an air wireless information channel, and the signal transmitted by the multimedia broadcasting wireless transmitter terminal is received and processed by a receiver terminal; the multimedia broadcasting wireless signal anti-noise transmission method has the advantages of short receiving synchronization time, high transmission efficiency and controllable multi-service and the like.

Description

Technical field [0001] The invention belongs to the field of wireless communication, and more particularly relates to a method for anti-noise transmission of multimedia broadcasting wireless signals. Background technique [0002] At present, wireless TV broadcasting has gradually developed from analog to digital. Digital TV broadcasting wireless transmission system, as an important part of digital TV broadcasting wireless, the development of its related technology is closely related to people's quality of life, and therefore has attracted special attention. Digital TV broadcasting and wireless related technologies and related industries are industries that develop rapidly in the field of communications and computers and have good market prospects. With regard to digital TV broadcasting wireless technologies, the current focus of various countries is how to provide low-cost, reliable, and high-speed mobile implementation solutions for digital TV broadcasting in a complex wave pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/38H04N7/26H04N7/50H04N7/64H04N19/117H04N19/176H04N19/184H04N19/61H04N19/65H04N19/80H04N19/89
Inventor 郑紫微徐铁峰聂秋华何加铭
Owner NINGBO UNIV
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