计算机与现代化 ›› 2012, Vol. 1 ›› Issue (1): 119-121.doi: 10.3969/j.issn.1006-2475.2012.01.031
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高广杰
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GAO Guang-jie
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摘要： 由于传统的MIL-STD-1553B总线难以满足高速数据传输需求且更换现有总线代价过高，因此迫切需要在不影响现有基带通信的条件下升级1553B系统以提供高速通信接口。本文分析1553B的信道特性并据此选择频谱利用率高、抗频率选择性衰落的离散多音调制(DMT)作为扩展带宽的技术，基于离散多音调制，提出一个与现有通信相互兼容的扩展方案以显著提高传输速率，并对该方案涉及的关键技术进行介绍。
关键词: 航空总线, 1553B, 多载波调制, 离散多音调制(DMT)
Abstract: As the traditional MIL-STD-1553B cannot meet the demand for high-speed data transmission and replacing the existing data bus can be cost prohibitive, there is an urgent need to upgrade the 1553B system to offer high-speed communication interface without interfering the existing baseband communication. This paper analyzes the characteristics of the channel in 1553B and selects the discrete multi-tone modulation (DMT) as the technology of extending the bandwidth of 1553B for its high spectrum efficiency. A scheme of upgrading 1553B compatible with the existing system based on discrete multi-tone modulation is proposed and the key technologies involved in the scheme are discussed.
Key words: avionics data bus, 1553B, multi-carrier modulation, discrete multi-tone (DMT)
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TN911
高广杰. 基于DMT的1553B带宽扩展研究[J]. 计算机与现代化, 2012, 1(1): 119-121.
GAO Guang-jie. Research on Extending 1553B’s Bandwidth Based on DMT[J]. Computer and Modernization, 2012, 1(1): 119-121.
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链接本文: http://www.c-a-m.org.cn/CN/10.3969/j.issn.1006-2475.2012.01.031
http://www.c-a-m.org.cn/CN/Y2012/V1/I1/119
