| 수중음향통신에서 효율적인 패킷 설계에 관한 연구 |
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박태두, 정지원 |
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| A Study on Efficient Packet Design for Underwater Acoustic Communication |
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Tae-Doo Park, Ji-Won Jung |
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| Abstract |
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Underwater acoustic communication has multipath error because of reflection by sea-level and sea-bottom. The multipath of underwater channel causes signal distortion and error floor. In this paper, in order to design an efficient packet structure, we employ channel coding scheme and phase recovery algorithm. For channel coding scheme, half rate LDPC channel coding scheme with N=1944 and K=972 was used. Also, decision directed phase recovery was used for correcting phase offset induced by multipath. Based on these algorithms, we propose length of data for optimal packet structure in the environment of oceanic experimentation. |
| Key Words:
LDPC 부호;
underwater channel;phase tracking algorithm;ldpc code;qef. underwater acoustic communication |
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