Influence of Underwater Channel Time-Variability on Communication Throughput Efficiency

Chan-Ho Hwang; Ki-Man Kim; Dong-Won Lee; Tae-Doo Park

doi:10.7776/ASK.2014.33.6.413

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2014 Vol.33, Issue 6 Preview Page Next Page

Influence of Underwater Channel Time-Variability on Communication Throughput Efficiency 수중 채널의 시변동성이 통신 스루풋 효율에 미치는 영향

30 November 2014. pp. 413-419

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Abstract

Underwater acoustic channel has time-variability. Time varying channel which disturbs the continuous transmission of information data reduces the underwater acoustic communication performance. In this paper, we show the temporal coherence as time-variability of channel and indicate throughput efficiency in accordance with transmission time of information data. Then we analyzed influence of underwater channel time-variability on communication throughput efficiency. We confirmed that the throughput efficiency reduced when the time-variability of the channel increased via lake trial.

Keywords

Underwater acoustic communication

Throughput efficiency

Time-variability

Temporal coherence

수중음향 채널은 시변적인 특징을 가진다. 채널의 시변동성은 지속적인 정보 데이터 전송을 방해하여 수중음향통신의 신뢰도를 감소시키는 요인이 된다. 본 논문에서는 채널의 시변동성을 시간영역 상관도로 기술하고, 정보 데이터의 실질 전송시간을 스루풋 효율로 표현하였다. 그리고 수중음향 채널의 시변동성이 통신 스루풋 효율에 미치는 영향을 분석하였다. 실제 수중음향통신 실험을 통하여 수중채널의 시변동성이 클수록 통신의 스루풋 효율도 감소한다는 것을 확인하였다.

키워드

수중음향통신

스루풋 효율

시변동성

시간 영역 상관도

References

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3.D. H. Choi, H. S. Kim, N. R. Kim, S. I. Kim, and J. H. Chung, “Coherence bandwidth and coherence time for the communi-cation frame in the underwater of east sea” (in Korean), J. Acoust. Soc. Kr. 29, 365-373 (2010).

4.K. G. Park, J. H. Park, S. W. Lee, J. W. Jung, J. C. Shin, and J. R. Yoon, “Performance evaluation of underwater acoustic communication in frequency selective shallow water” (in Korean), J. Acoust. Soc. Kr. 32, 95-103 (2013).

5.J. T. Bae, M. H. Kim, S. S. Choi, J. W. Jung, S. Y. Chun, and K. C. Dho, “The analysis about channel code performance of underwater channel” (in Korean), J. Acoust. Soc. Kr. 27, 286-295 (2008).

6.C. H. Hwang, H. W. Lee, K. M. Kim, D. W. Lee, and J. H. Choi, “Experimental results of an underwater acoustic communications with doppler tracking” (in Korean), J. Acoust. Soc. Kr. Suppl.1(s) 33, 50-51 (2014).

7.J. G. Proakis, and M. Salehi, Digital Communications, Fifth edition (McGraw-Hill, New York, 2008), pp. 689-695.

Information

Publisher :The Acoustical Society of Korea
Publisher(Ko) :한국음향학회
Journal Title :The Journal of the Acoustical Society of Korea
Journal Title(Ko) :한국음향학회지
Volume : 33
No :6
Pages :413-419
Received Date : 2014-07-03
Revised Date : 2014-08-13
Accepted Date : 2014-09-26
DOI :https://doi.org/10.7776/ASK.2014.33.6.413

The Journal of the Acoustical Society of KoreaISSN:1225-4428(Print) 2287-3775(Online)한국음향학회

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