Underwater Acoustic Communication With an Orthogonal Signal Division Multiplexing Scheme in Doubly Spread Channels
Underwater Acoustic Communication With an Orthogonal Signal Division Multiplexing Scheme in Doubly Spread Channels
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DOI：
10.1109/joe.2013.2245273
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发表时间：
2014-01-01
影响因子：
4.1
通讯作者：
Mizutani, Koichi
中科院分区：
文献类型：
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作者：
Ebihara, Tadashi;Mizutani, Koichi
由于多径和多普勒扩展的严重时间扩展，水声通信是一个持续的挑战。在本文中，我们提出了一个水声通信系统，使用正交信号分复用（OSDM），一个计划，测量的多径配置文件没有自适应或插值过程，实现稳定的通信在双扩展信道。我们以前评估的OSDM方案在水声通信系统中的性能在实验和模拟。在本研究中，我们实验比较了OSDM和现有的通信方案的性能-单载波与判决反馈均衡器（DFE）和正交频分复用（OFDM）-在一个测试槽中的通信质量，数据速率，帧长度和计算复杂度。我们发现，OSDM与多通道接收机是有吸引力的通信质量方面，它实现了更好的误码率（BER）性能相比，在静态和动态信道与各种输入信噪比的其他计划，虽然复杂性是小于实现与单载波DFE。基于这些研究结果，我们认为OSDM可以提供一个高度可靠的通信环境，水声通信与多径和多普勒扩展，如在浅水。
Underwater acoustic (UWA) communication is an ongoing challenge because of the heavy time spread by multipath and Doppler spreads. In this paper, we propose a UWA communication system using orthogonal signal-division multiplexing (OSDM), a scheme that measures the multipath profile without an adaptation or interpolation process, to achieve stable communication in doubly spread channels. We previously evaluated the performance of an OSDM scheme in a UWA communication system in both an experiment and simulations. In the present study, we experimentally compared the performance of OSDM and existing communication schemes-single-carrier with decision feedback equalizer (DFE) and orthogonal frequency-division multiplexing (OFDM)-in a test tank with respect to communication quality, data rate, frame length, and calculation complexity. We found that OSDM with a multichannel receiver is attractive in terms of communication quality; it achieved a far better bit error rate (BER) performance compared to the other schemes in both static and dynamic channels with various input signal-to-noise ratios, although the complexity is less than that achieved with single-carrier DFE. Based on these findings, we suggest that OSDM can provide a highly reliable communication environment for UWA communication with multipath and Doppler spread, such as in shallow water.