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

Design method for FIC new configuration in T-MMB system compatible with DAB

A technology of design method and coding method, applied in the direction of transmission system, electrical components, etc., can solve the problems of the influence of DAB system and the inability of the receiver to correctly identify the position of the block coding block.

Inactive Publication Date: 2008-02-27
NUFRONT MOBILE COMM TECH
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, if the new block coding method is directly used to replace the convolutional code in the DAB system, it will have an impact on the part of the DAB system other than the coding, and there is also a problem that the block coding block position cannot be correctly identified at the receiving end, so it is necessary to add a specific instructions for

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
  • Design method for FIC new configuration in T-MMB system compatible with DAB
  • Design method for FIC new configuration in T-MMB system compatible with DAB
  • Design method for FIC new configuration in T-MMB system compatible with DAB

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The FIC application diagram of the DAB-compatible T-MMB system involved in the present invention is shown in FIG. 4 .

[0027] The specific functional block diagram of the DAB-compatible T-MMB system is shown in Figure 5.

[0028] The T-MMB system involved in the present invention can be compatible with DAB and realize multiple modulation modes and encoding modes, and is specifically described with FIG in FIC, wherein:

[0029] 1. Add FIG0 / 15 to describe the sub-channel information of the T-MMB service, and increase the indication of the modulation mode, coding mode, interleaving depth and protection level of the T-MMB service. As shown in Figure 6, the specific meaning is:

[0030] - SubChId (Sub-Channel Identifier): This 6-bit unsigned binary number is used to identify a certain sub-channel.

[0031] -Start Address: This 10-bit field is encoded as an unsigned binary number (range 0 to 863), indicating the address of the first capacity unit (CU) in the subchannel.

...

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

This invention puts forward a method for designing new collocation of FIC of a ground T-MMB system, which realizes a multimedia broadcast system compatible with DAB by adding some fast information groups in the FIC of transmitting frames of the T-MMB system to describe its code mode, modulation module and other properties. This invention includes a new expansion of a certain type of FIG to realize instruction of modulation mode, code mode, interlacing depth, protection grade and size of sub-channels and its start position of sub-channels of the T-MMB business and realizes flexible collocationto packet codes when increasing an expansion of a certain type of the FIG and describing position information of the packet coding block of the T-MMB business.

Description

technical field [0001] The invention relates to a digital multimedia broadcasting system, especially a design method for describing configuration information of multimedia services and data services in the FIC of the transmission frame. Background technique [0002] The core of the communication system is how to improve transmission efficiency and reliability within a limited bandwidth. In order to improve reliability, efficient error correction codes are usually used in the system. In order to improve spectrum utilization, high-order modulation can be used to transmit more Multiple programs. [0003] The Digital Audio Broadcasting DAB standard is an international standard for digital audio broadcasting developed by the International Organization for Standardization (ISO) in the 1990s, using convolutional codes as error correction codes, and the terrestrial digital multimedia broadcasting ( In the T-DMB) system, a convolutional code plus an RS code is used as an error corre...

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): H04H1/00H04L29/06
Inventor 鲍东山周玉宝
Owner NUFRONT MOBILE COMM TECH
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