水声通信的速率到达剖面和音调加载算法

2014 Eleventh International Conference on Wireless and Optical Communications Networks (WOCN) Pub Date : 2014-10-16 DOI:10.1109/WOCN.2014.6923069

K. Saraswathi, Niraj B. Gadakari, B. Abitha, S. Ravishankar

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引用次数: 2

摘要

水声(UWA)信道是一种严重的多径传播信道，受海面和海底信号反射的影响，受到水下环境特有的各种环境噪声分布的影响。此外，水的运动引入了多普勒。在这种环境中，多载波调制方案可以适应给定的服务质量(QOS)。本文采用Thorp模型和Ainslie-McColm模型对水声通道进行了研究，并分析了它们的局限性。考虑船舶、风、热、气泡和湍流等不同类型的环境噪声源，采用离散多音调制得到了不同距离下的信噪比(SNR)曲线。为了满足QOS要求，利用这些信噪比曲线，对基于系统裕度的不同速率自适应和裕度自适应音调加载算法进行了仿真和比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Rate reach profile and tone loading algorithms for underwater acoustic communication

Underwater acoustic (UWA) channel is characterized as a severe multipath propagation channel due to signal reflections from the surface and bottom of the sea, that is affected by a variety of ambient noise profiles unique to underwater environment. Further the motion of water introduces a Doppler. Multicarrier modulation schemes can be adapted to meet a given Quality of service (QOS) in such environments. In this paper the underwater acoustic channel is studied using the Thorp and Ainslie-McColm models for absorption and their limitations are analyzed. Signal to noise ratio (SNR) profiles at various distances employing Discrete Multitone Modulation are obtained considering different types of ambient noise sources such as shipping, wind, thermal, bubble and turbulence. To meet the QOS different Rate Adaptive and Margin Adaptive Tone loading algorithms are simulated and compared based on system margin, utilizing these SNR profiles.

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2014 Eleventh International Conference on Wireless and Optical Communications Networks (WOCN)

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