Two regularization constant selection methods for recursive least squares algorithm with convex regularization and their performance comparison in the sparse acoustic communication channel estimation

Ki-Hoon Nam; J. S. Kim; Gi Hoon Byun

doi:10.7776/ASK.2016.35.5.389

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Two regularization constant selection methods for recursive least squares algorithm with convex regularization and their performance comparison in the sparse acoustic communication channel estimation 볼록 규준화 RLS의 규준화 상수를 정하기 위한 두 가지 방법과 희소성 음향 통신 채널 추정 성능 비교

30 September 2016. pp. 389-394

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Abstract

MIMO (Multiple-Input-Multiple-Output) in underwater acoustic communication has distortion of received signal because of ISI (Inter-Symbol Interference) and crosstalk among transmitters. Time-reversal mirror was used for compensating of signal distortion, but it has a limit in eliminating crosstalk effectively. This paper proposes a time-reversal mirror based on GSC (Generalized Sidelobe Canceller) for removing crosstalk. The FAF05 (The Focused Acoustic Forecasting 05) experimental data has been used to verify the suggested method by comparison with the conventional time-reversal for communication performance, and it is demonstrated that the suggested method produces better communication performance results than conventional time-reversal.

Keywords

Underwater acoustic communication

Time-reversal mirror

Generalized sidelobe canceller

Multiple input multiple output

수중음향통신에서 다중 입출력(Multiple-Input-Multiple-Output, MIMO) 환경은 인접 심볼 간 간섭뿐만 아니라 송신기 간의 채널 간 간섭의 영향으로 인하여 수신 신호의 왜곡이 발생하는 특징을 갖는다. 신호 보상을 위하여 시역전 기술이 이용되었지만 기존의 시역전 기술은 채널 간 간섭을 효과적으로 제거하지 못하는 한계가 있다. 본 논문에서는 채널간 간섭의 제거를 위해 일반화된 부엽 제거기(Generalized Sidelobe Canceller, GSC)를 적용한 시역전 기술을 제안한다. 제안된 방법의 검증을 위해 FAF05(The Focused Acoustic Forecasting 05) 해상 실험 데이터를 이용하여 기존의 시역전 기술과의 통신 성능 비교를 수행하였으며, 그 결과 제안된 방법에 대한 통신 성능이 기존의 시역전 기술에 비해 향상됨을 확인 할 수 있었다.

키워드

수중음향통신

시역전 기술

일반화된 부엽 제거기

다중 입출력

References

1.P. J. Urick, Principles of Underwater Sound 3nd Ed (McGraw-Hill, New York, 1983), pp. 11-147.

2.B. C. Gwun and K. M Kim, “Experimental performance evaluation of MIMO underwater acoustic communication in water tank” (in Korean), J. Korea Inst. Inf. Commun. Eng. 17, 1577-1582 (2013).

3.H. C. Song, W. S. Hodgkiss, W. A. Kuperman, T. Akal, and M.Stevenson, “Multiuser communications using passive time reversal,” IEEE J. OCEAN. ENG. 32, 915-926 (2007).

4.H. C. Song, J. S. Kim, W. S. Hodgkiss, and J. H. Joo, “Crosstalk mitigation using adaptive time reversal,” J. Acoust. Soc. Am. 127, EL19 (2010).

5.H. C. Song, W. S. Hodgkiss, W. A. Kuperman, W. J. Higley, K. Raghukumar, T. Akal, and M. Stevenson “Spatial diversity in passive time reversal communications,” J. Acoust. Soc. Am. 120, 2067-2076 (2006).

6.M. Stojanovic, J. A. Capitovic, and J. G. Proakis, “Adaptive multi-channel ombining and equalization for underwater acoustic communications,” J. Acoust. Soc. Am. 94, 1621-1631, (1993).

7.J. S. Kim, H. C. Song, and W. A. Kuperman, “Adaptive time-reversal mirror,” J. Acoust. Soc. Am. 109, 1817-1825 (1993).

8.M. J. Eom, J. S. Kim, J. H. Cho, H. Y. Kim, and I. Sung, “Algorithm and experimental verification of underwater acoustic communication based on passive tme-reversal mirror” (in Korean), J. Acoust. Soc. Kr. 33, 392-399 (2014).

9.L. J. Griffiths and C. W. Jim, “An alternative approach to linearly constrained adaptive beamforming,” IEEE Trans. Antennas Propag. 30, 27-34 (1982).

10.D. H. Johnson and D. E. Dudgeon, Array Signal Processing: Concepts and Techniques (Prentice Hall, Englewood Cliffs, 1993), pp. 349-371.

11.A. M. Zoubir, M. Viberg, R. Chellappa, and S. Theodoridis, Academic Press Library in Signal Processing: Array and Statistical Signal Processing (Academic Press, Amsterdam, 2014), pp. 527-529.

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 : 35
No :5
Pages :389-394
Received Date : 2016-08-24
Accepted Date : 2016-09-23
DOI :https://doi.org/10.7776/ASK.2016.35.5.389

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

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