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Volume 27 Issue 8
Aug.  2005
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Sun LiJun, Sun Chao. Improved Sparse Blind Equalizer Using Super-Exponential Iterative Form Algorithm for Underwater Acoustic Channels[J]. Journal of Electronics & Information Technology, 2005, 27(8): 1205-1207.
Citation: Sun LiJun, Sun Chao. Improved Sparse Blind Equalizer Using Super-Exponential Iterative Form Algorithm for Underwater Acoustic Channels[J]. Journal of Electronics & Information Technology, 2005, 27(8): 1205-1207.

Improved Sparse Blind Equalizer Using Super-Exponential Iterative Form Algorithm for Underwater Acoustic Channels

  • Received Date: 2004-03-19
  • Rev Recd Date: 2004-12-28
  • Publish Date: 2005-08-19
  • The iterative form of the Super-Exponential (SE) algorithm has good convergence capability, but its complexity increases with the square of the equalizer length, which makes it unsuitable for hardware implementation. According to the properties of sparse underwater channels, a novel improved sparse Super-Exponential Iterative (SEI) blind equalization algorithm is proposed, which uses part of the SE algorithm to estimate the equalizer. After sparse processing, the equalizer is used to initialize the SEI algorithm. Less complexity and faster convergence rate is attainable with this method. The computer simulation results confirm the effectiveness of the proposed algorithm.
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  • Kilfoyle D B, Baggeroer A B. The state of the art in underwater acoustic telemetry[J].IEEE Journal of Oceanic Engineering.2000,25(1):4-[2]童峰,陆佶人.基于盲源分离的水声信道盲均衡处理方法.电子与信息学报,2003,25(2):70-274.[3]Jarvis S, Janiesch R, Fitzpatrick K, et al.. Results from recent sea trials of the underwater digital acoustic telemetry system[J].IEEE OCEANS 1997 Conference Proceedings.1997, 1:702-[4]Freitag L, Grund M, Singh S, et al.. A bidirectional coherent acoustic communication system for underwater vehicles[J].IEEE OCEANS 1998 Conference Proceedings.1998, 1:482-[5]Shalvi O, Weinstein E. Super-exponential methods for blind equalization. IEEE Trans. on Information Theory, 1993, 39(2):505 - 519.[6]Geller B, Capellano V, Jourdain G. Equalizer for real time high rate transmission in underwater communications. International Conference on Acoustics, Speech, and Signal Processing, 1995, 5:3179 - 3182.[7]Kocic M, Brady D, Stojanovic M. Sparse equalization for realtime digital underwater acoustic communications. IEEE OCEANS 1995 Conference Proceedings, 1995, 3: 1417- 1422.[8]Johnson M, Brady D, Grund M. Reducing the computational requirements of adaptive equalization in underwater acoustic communications. IEEE OCEANS 1995 Conference Proceedings,1995, 3:1405 - 1410.[9]Haykin S. Adaptive Filter Theory. Third Edition, Englewood Cliffs, New Jersey: Prentice-Hall, 1996, ch. 18.[10]张贤达.通信信号处理.北京:清华大学出版社,2000:280.[11]王峰.基于高阶统计量的水声信道盲均衡理论与算法.[博士论文],西安:西北工业大学,2003.
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