Multimedia broadcast wireless signal single-frequency network anti-noise transmission method

A multimedia broadcasting, wireless signal technology, applied in multi-frequency code systems, digital video signal modification, image communication, etc., can solve the problems of algorithms and encoders that are too computationally expensive, cannot be practically applied, and are not widely used.

Inactive Publication Date: 2010-07-14
NINGBO UNIV
View PDF2 Cites 14 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multimedia broadcast wireless signal single-frequency network anti-noise transmission method
  • Multimedia broadcast wireless signal single-frequency network anti-noise transmission method
  • Multimedia broadcast wireless signal single-frequency network anti-noise transmission method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0045] According to the embodiment of the signal transmission between the transmitter and the receiver of the multimedia broadcasting wireless signal single frequency network anti-noise transmission method proposed by the present invention, as figure 1 As shown, each multimedia broadcast wireless transmitter in the single frequency network sends the multimedia broadcast wireless signal to the air wireless channel through the following steps, and the signal sent by each multimedia broadcast wireless transmitter in the single frequency network is received and processed by the receiver:

[0046] 1) The central data manager of the single frequency network converts the multimedia data stream into a data bit stream through the media data processor;

[0047] 2) The network data manager of the single frequency network passes the input data bit stream ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a multimedia broadcast wireless signal single-frequency network anti-noise transmission method. In the multimedia broadcast wireless signal single-frequency network anti-noise transmission method of the invention, after processing of multimedia data stream by a central data manager on a single-frequency network multimedia broadcast wireless transmitter, network data manager bit stream LDPC coding, code element modulation, constellation rotation, empty frequency code modulation, frame body formation, time domain training sequence insertion framing, pulse shaping, and up-conversion to carrier waves, multimedia broadcast wireless signals form radio-frequency signals which are transmitted to an air wireless channel and received by a receiver terminal for processing signals transmitted by each multimedia broadcast wireless transmitter in a single-frequency network. The multimedia broadcast wireless signal single-frequency network anti-noise transmission method has the advantages of short receiving synchronization time, high transmission efficiency, controllable multiple services and the like.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more specifically relates to an anti-noise transmission method of a multimedia broadcast wireless signal single frequency network. 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 ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04L27/26H04L1/06H04N7/26H04N19/117H04N19/157H04N19/80
Inventor 郑紫微徐铁峰聂秋华何加铭
Owner NINGBO UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap