Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Anti-interference wireless multimedia mobile broadcast signal framing modulation method

A multimedia broadcasting and anti-noise technology, applied in the field of wireless communication

Inactive Publication Date: 2012-01-04
王丽艳
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Aiming at the problem of high data rate controllable multi-service digital TV anti-noise wireless multimedia broadcasting, the present invention proposes a framing modulation method for anti-noise wireless multimedia broadcasting signals

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
  • Anti-interference wireless multimedia mobile broadcast signal framing modulation method
  • Anti-interference wireless multimedia mobile broadcast signal framing modulation method
  • Anti-interference wireless multimedia mobile broadcast signal framing modulation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] According to an embodiment of a certain transmitter of the anti-noise wireless multimedia broadcasting signal framing modulation method proposed by the present invention, as figure 1 shown, follow these steps:

[0035] 1) This certain anti-noise wireless multimedia broadcasting signal transmitter forms the FFT coded data block on the frequency domain with its input data bit stream through LDPC code, and FFT represents fast discrete Fourier transform, and the length of FFT coded data block is K; The encoding rate of input data for LDPC encoding is one of 1 / 4, 1 / 2, 5 / 8, 3 / 4 and 7 / 8;

[0036] 2) The certain anti-noise wireless multimedia broadcasting signal transmitter uses IFFT to transform the FFT coded data block into a time-domain discrete coded data sample block D total , IFFT stands for Inverse Fast Discrete Fourier Transform;

[...

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 an anti-interference wireless multimedia mobile broadcast signal framing modulation method, which is a time domain / frequency domain combined framing modulation scheme. The anti-interference wireless multimedia mobile broadcast signal framing modulation method has the advantages of low peak-to-average power ratio, short synchronization time, resistance to the influence of noises, 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 wireless multimedia broadcasting signal framing modulation method. Background technique [0002] At present, television broadcasting has gradually developed from analog to digital. Digital TV wireless multimedia broadcasting transmission system, as an important part of digital TV wireless multimedia broadcasting, 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 wireless multimedia broadcasting related technologies 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 anti-noise wireless multimedia broadcasting, countries are currently focusing on how to provide low-cost, reliable and high-speed mobile implement...

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): H04L27/26H04L25/02H04L1/00
Inventor 郑紫微徐铁峰聂秋华何加铭
Owner 王丽艳
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com