Basic Study of Underwater Acoustic Communication Using 32-Quadrature Amplitude Modulation
Basic Study of Underwater Acoustic Communication Using 32-Quadrature Amplitude Modulation
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32正交调幅水声通信基础研究
DOI：
10.1143/jjap.44.4689
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发表时间：
2005
影响因子：
1.5
通讯作者：
T. Shimura
中科院分区：
文献类型：
--
作者：
H. Ochi;Yoshitaka Watanabe;T. Shimura
为了实现远程控制的高速水声数字通信，对采用32正交幅度调制（QAM）的方法进行了基础实验。采用双通道判决反馈均衡器（DFE）解调器，在2 m距离的水池试验中获得了良好的解调结果。尽管信道具有宽的时间扩展，但实现了62.5 k比特每秒（bps）和100 kbps的传输速率。即使在125 kbps的传输速率的情况下，也实现了10-4量级的符号差错率，这是传输图像的足够性能。
In order to realize a high-speed acoustic digital communication to control an ROV remotely, a basic experiment on a method using 32-quadrature amplitude modulation (QAM) was carried out. Using a two-channel decision feedback equalizer (DFE) demodulator, good demodulation results were obtained in a tank test at a range of 2 m. In spite of a channel with a wide time spread, transmission rates of 62.5 k bit per second (bps) and 100 kbps were achieved. Even in the case of a transmission rate of 125 kbps, a symbol error rate on the order of 10-4 was achieved, which is sufficient performance to transmit an image.