Anti-fading framing modulating method for multimedia broadcast radio signal

A technology for multimedia broadcasting and wireless signals, applied in multi-frequency code systems, shaping networks in transmitters/receivers, digital transmission systems, etc., and can solve problems such as mutual interference, system performance deterioration, and signal distortion.

Active Publication Date: 2011-11-23
ANHUI SAFE ELECTRONICS
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The high peak-to-average power ratio (PAPR) of OFDM signals has high requirements on the linear range of amplifiers and digital-to-analog converters. If the linear range of the system cannot meet the signal ch

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-fading framing modulating method for multimedia broadcast radio signal
  • Anti-fading framing modulating method for multimedia broadcast radio signal
  • Anti-fading framing modulating method for multimedia broadcast radio signal

Examples

Experimental program
Comparison scheme
Effect test

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 multimedia broadcast wireless signal anti-fading framing modulation method proposed by the present invention, as figure 1 shown, follow these steps:

[0034] 1) The certain multimedia broadcast wireless signal anti-fading transmitter passes its input data bit stream through RS coding (Reed-Solomon, RS), convolutional interleaving, LDPC coding (Low Density Parity Check, LDPC), symbol modulation, After symbol interleaving, an FFT concatenated interleaving coded modulation data block is formed in the frequency domain, FFT means fast discrete Fourier transform, and the length of the FFT concatenated interleaved coded modulated data block is K; the coding rate of LDPC code is 1 / 4, 1 / One of 2, 5 / 8, 3 / 4, and 7 / 8; the symbol modulation is one of QPSK, 16QAM, 32QAM, and 64QAM, and the ...

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-fading framing modulating method for a multimedia broadcast radio signal, and is a time-domain and frequency-domain hybrid framing modulating scheme and has the advantages of low PAPR (Peak to Average Power Ratio), short synchronous time, anti-fading property, capability of controlling multi-service, and the like.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more specifically relates to an anti-fading framing modulation method for multimedia broadcast wireless signals. Background technique [0002] Digital TV multimedia broadcasting wireless related technologies and related industries are industries with rapid development and good market prospects in the field of communication and computer. Multimedia broadcast wireless signal anti-fading transmitter framing modulation technology is the key technology of digital TV multimedia broadcast wireless system, which plays a decisive role in the performance of the entire system, and is the focus of everyone's research. Due to the rapid development of digital signal processing technology and integrated circuit technology, the system realization of Orthogonal Frequency Division Multiplexing (OFDM) technology becomes easier and easier. Because OFDM multi-carrier transmission technology has many advanta...

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): H04L1/00H04L27/26H04L25/03
Inventor 郑紫微徐铁峰聂秋华何加铭
Owner ANHUI SAFE ELECTRONICS
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