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
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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

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  • 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

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[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.

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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

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Application Information

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IPC IPC(8): H04H1/00H04L29/06
Inventor 鲍东山周玉宝
Owner NUFRONT MOBILE COMM TECH
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