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Multimedia broadcasting wireless signal anti-noise transmission method

A multimedia broadcasting and wireless signal technology, which is applied in digital video signal modification, image communication, television, etc., can solve problems such as not being widely used, unable to be practically applied, and computational complexity of algorithms and encoders is too large

Inactive Publication Date: 2010-07-21
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] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0044] According to an embodiment of signal transmission between a transmitter and a receiver of a multimedia broadcast wireless signal anti-noise transmission method of the present invention, as figure 1 As shown, the multimedia broadcast wireless signal is sent to the wireless channel in the air through the following steps at the multimedia broadcast wireless transmitter end, and the signal sent by the multimedia broadcast wireless transmitter end is received and processed by the receiver end:

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

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

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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 specifically relates to a method for anti-noise transmission of a multimedia broadcast wireless signal. Background technique [0002] At present, wireless TV broadcasting has gradually developed from analog to digital. Digital TV broadcast wireless transmission system, as an important part of digital TV broadcast wireless, the development of its related technologies is closely related to people's quality of life, and therefore has received extensive attention from people. Digital TV broadcasting wireless related technologies and related industries are industries with rapid development and good market prospects in the field of communication and computer. In terms of digital TV broadcasting wireless related technologies, the current focus of countries is how to provide low-cost, reliable and high-speed mobile implementation solutions for digital TV broadcasting wireless in a complex ...

Claims

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Application Information

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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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