风致气泡对有限反馈时变浅水声信道聚类OFDM功率负载的影响

Xiaopeng Huang, Victor B. Lawrence
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引用次数: 0

摘要

吹过海面的风会产生许多戏剧性的效果。其中最重要的影响之一是破碎波产生的气泡,由于气泡薄层的声音散射和吸收特性,它可以对高频声传播,声速分布和环境噪声产生重大影响。在本文中,一方面,我们分析了气泡的几个重要性质及其对声传播和声速分布的影响;另一方面,我们提出了一种以最大容量为目标的优化模型,并以符号的总传输功率为约束。该算法采用基于有限反馈过程的Lloyd算法实现。仿真结果将揭示在气泡作用下的水声信道脉冲响应,并分别比较在有气泡作用和无气泡作用下,在有限反馈过程下系统容量的差异。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of wind-generated bubbles on the clustered OFDM power loading for time-varying shallow water acoustic channels with limited feedback
Wind blowing over the sea surface generates many dramatic effects. One of the most important effects is bubbles generated by breaking waves, which can have a major effect on high frequency acoustic propagation, sound speed profile and ambient noise due to the sound scattering and absorption properties of a thin layer of bubbles. In this paper, on one hand, we analyze several important properties of bubbles and their effect on acoustic propagation and sound speed profile, based on the proposed propositions; on the other hand, we propose an optimization model aiming at maximizing the capacity with constraints of the total transmission power in a symbol. It is achieved by adopting the Lloyd algorithm based limited feedback procedure. Simulation results will reveal the underwater acoustic (UWA) channel impulse response with the effect of bubbles, and compare the difference of system capacities in terms of limited feedback procedure, based on with and without the effect of bubbles respectively.
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