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DMT (Discrete Multi-Tone)-based transmission method and device of high-speed 1553B communication bus

A technology of communication bus and sending device, applied in bus network, data exchange through path configuration, etc., can solve the problems of stability impact and high cost of the original system

Inactive Publication Date: 2012-09-26
TIANJIN UNIV
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Problems solved by technology

But all of these need to replace the equipment on the original bus system, which not only costs a lot, but also affects the stability of the original system to a large extent

Method used

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  • DMT (Discrete Multi-Tone)-based transmission method and device of high-speed 1553B communication bus
  • DMT (Discrete Multi-Tone)-based transmission method and device of high-speed 1553B communication bus
  • DMT (Discrete Multi-Tone)-based transmission method and device of high-speed 1553B communication bus

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Embodiment Construction

[0063] The cable used in the high-speed 1553B communication bus system developed by the present invention is similar to the twisted pair used in the ADSL (Asymmetric Digital Subscriber Line, hereinafter referred to as ADSL) system, which is 75 ohms. Therefore, the DMT modulation technology that has been maturely applied in ADSL technology is the core technology of the high-speed 1553B communication bus system. Using DMT technology, the broadband channel is decomposed into a large number of narrowband sub-channels. The frequency characteristics of each sub-channel are relatively flat, and the data rate that can be transmitted in each sub-channel is low. Using multi-channel parallel transmission technology, the total data rate can be Reach very high.

[0064] The design starting point of the high-speed 1553B communication bus system is to provide a high-speed data transmission channel for new high-speed devices connected to the bus while keeping the original bus system unchanged...

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Abstract

The invention relates to a DMT (Discrete Multi-Tone)-based high-speed wire digital communication device. For aiming at providing a high-speed system which not only can improve the transmission speed of the current bus system, but also can be integrated with the original bus communication use, the invention adopts a technical scheme which is characterized in that a DMT-based transmission device of a high-speed 1553B communication bus comprises a parallel scrambling module, a RS (Reed-Solomon) coding module, a QAM (Quadrature Amplitude Modulatio) constellation labeling module, a block interleaver module, a pilot frequency insertion module, an IFFT (Inverse Fast Fourier Transform) module and a conjugate-symmetric transform module, a cyclic expansion module and a training symbol generating module which are serially connected in sequence by an FPGA (Field Programmable Gate Array). The DMT-based high-speed wire digital communication device is mainly applied to high-speed wire digital communication.

Description

technical field [0001] It relates to a high-speed wired digital communication device, especially a transmitter and a transmitting method of a digital communication device using a multi-carrier modulation mode, specifically, a high-speed 1553B communication bus transmission method based on DMT (that is, discrete multi-tone modulation, hereinafter referred to as DMT) with the device. Background technique [0002] The full name of the 1553B communication bus is a digital time-division command / response multiplex data bus, which is an aviation system communication bus standard formulated by the US military in 1978. The communication protocol has significant advantages in terms of reliability of transmission, flexibility of use, and data integrity, etc., and can provide applications with reliability requirements under various harsh conditions. Therefore, it has been widely used in military platforms such as avionics, military ships and armored vehicles, and has been widely adopte...

Claims

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Application Information

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IPC IPC(8): H04L12/40
Inventor 汪清王帅李鹏侯永宏侯春萍王刚
Owner TIANJIN UNIV
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