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DSP-Based Micro-Modem for Underwater Acoustic Communications
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 Title & Authors
DSP-Based Micro-Modem for Underwater Acoustic Communications
Lee, Dongsoo; Lee, Sangmin; Park, Sung-Joon;
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Recently, the need for various underwater application systems targeting efficient resource exploration and aquatic ecosystem monitoring is rapidly increasing in littoral sea and inland waters. In this paper, we focus on the research and development of digital module of acoustic micro modem which can be used for underwater mobile communication systems and underwater sensor network systems. Specifically, a digital module of acoustic modem embedding digital signal processor is designed and implemented. On top of the developed hardware platform, physical layer frame generation and recovery and channel coding algorithms are mounted and tested in a water tank and a pond to verify its functionality and performance. According to experimental results, less than 1 percent of total computational power is consumed in the processing of frame control and convolutional code with the data rate of 1 kbps. Thus, the performance of micro modem could be improved by loading efficient baseband algorithms into the processor while maintaining the implemented hardware.
Underwater Communication;Acoustic Modem;Micro Modem;Digital Signal Processor;
 Cited by
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