Underwater Acoustic Communications and Networks for the US Navy's Seaweb Program
Underwater Acoustic Communications and Networks for the US Navy's Seaweb Program
复制标题
DOI：
10.1109/sensorcomm.2008.137
复制
发表时间：
2008-08
期刊：
影响因子：
--
通讯作者：
J. Rice;D. Green
中科院分区：
文献类型：
--
作者：
J. Rice;D. Green
目前，声学通信和海底网络的现实情况与学术理论和调查所产生的期望有很大不同。问题不在于通信理论的基本原理不适用，而在于声学信道的困难不一定符合该理论传统应用的假设。在本文中，我们描述了在过去十年的现代化发展中已经解决的许多实际问题。解决的一些问题具有RF模拟，但是信道的严重性以及信道约束和调制解调器平台操作的组合使得声学通信成为一个非常不同的问题。特别是，我们解决这些问题，通过他们的影响，物理小，电池供电，基于DSP的，全向调制解调器。接下来，我们将描述使用商用声学调制解调器作为水下网络基础的进展。我们讨论的物理，链路和网络层的设计选择是一致的传输通道和调制解调器的复合约束。
At present, the realities of acoustic communications and undersea networks differ substantially from the expectations arising from academic theory and investigation. The issue is not that the fundamentals of communications theory do not apply, but rather the fact that the difficulties of the acoustic channel do not necessarily fit the assumptions underlying conventional applications of that theory. In this paper we describe many of the practical problems that have been addressed over the past ten years of modem development. Some of the issues addressed have an RF analog, but the severity of the channel and the combination of channel constraints and modem-platform operations makes acoustic communications a very different problem. In particular, we address these issues via their impact on physically small, battery powered, DSP-based, omni-directional modems. Next we describe progress toward using commercial acoustic modems as the basis for underwater networks. We discuss design choices at the physical, link, and network layers that are consistent with the compound constraints of the transmission channel and modem.