Underwater communication link with iterative equalization
Underwater communication link with iterative equalization
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DOI：
10.1109/oceans.2006.307059
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发表时间：
2006-09
期刊：
影响因子：
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通讯作者：
Tommy Oberg;B. Nilsson;N. Olofsson;M. L. Nordenvaad;E. Sangfelt
中科院分区：
文献类型：
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作者：
Tommy Oberg;B. Nilsson;N. Olofsson;M. L. Nordenvaad;E. Sangfelt
本文提出了一种水声通信链路。该信道存在严重的码间干扰，采用迭代线性均衡器和Turbo码进行处理。实验已经在波罗的海中使用带宽为4 kHz、中心频率为12 kHz的4 QAM信号进行。原始数据速率为8 kbit/s，但在用于纠错编码的降低之后，净比特率为2.88kbit/s。源电平为180 dB Re。1 mu/Pa@1m和单个水听器接收器，显示出高达60 km的可靠通信。初始同步是译码成功的关键，本文也对初始同步进行了讨论
In this paper an acoustic underwater communication link is presented. The channel has severe inter symbol interference, which is dealt with by an iterative linear equalizer and a Turbo code. Experiments has been performed in the Baltic Sea using a 4QAM signal with bandwidth 4 kHz at a center frequency of 12 kHz. The raw data rate is 8 kbit/s but after reduction for error correction coding the net bit rate is 2.88 kbit/s. With a source level of 180 dB re. 1mu/Pa @ 1m and a single hydrophone receiver, a reliable communication is shown up to a distance of 60 km. Very important for a successful decoding is the initial synchronization, which also is discussed