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Establishment of underwater wireless acoustic MODEM using C-OFDM

机译：使用C-OFDM建立水下无线声学调制解调器

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Establishing an underwater wireless acoustic communication link for practical applications is still a difficult task because of the severe channel conditions. Doppler and range spread are extremely high for under water channels (UWC) compared to ordinary radio channels. Moreover, the ever varying nature of the UWC increases the uncertainty in predicting the worst case values of doppler spread and range spread. In recent years, orthogonal frequency division multiplexing (OFDM) has emerged as the single solution to most of the problems in wireless communication systems. OFDM has dominated over single carrier modulation techniques mainly because of the simple, robust and low complexity receiver design with high data rate and high band width efficiency. But, it is only very recently that people have started exploring the usage of OFDM for UWC. In this paper, the design, modeling and testing of coded OFDM based underwater acoustic communication system for high data rate applications is explained.
机译：由于严重的信道条件，建立实际应用的水下无线声学通信链路仍然是一项艰巨的任务。与普通的无线电通道相比，多普勒和范围扩散对于水通道（UWC）非常高。此外，UWC的变化性质增加了预测多普勒扩散和范围扩散的最坏情况值的不确定性。近年来，正交频分复用（OFDM）已成为无线通信系统中大多数问题的单一解决方案。 OFDM主导于单载波调制技术，主要是由于具有高数据速率和高带宽效率的简单，稳健和低的复杂性接收器设计。但是，最近，人们已经开始探索OFDM为UWC的使用。本文解释了基于DDM水下声学通信系统的用于高数据速率应用的设计，建模和测试。

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