Zhaohui Wang
ABSTRACT
Despite that underwater acoustic channels are well known to contain various interferences, research on interference mitigation in underwater acoustic communications has been very limited. In this paper, we deal with a wideband orthogonal frequency division multiplexing (OFDM) transmission in the presence of an external interference which occupies partially the signal band and whose time duration is shorter than the OFDM block. We parameterize the unknown interference waveform by a number of parameters assuming prior knowledge of its frequency band and time duration, and develop an iterative receiver, which couples interference detection via a generalized likelihood-ratio-test (GLRT), interference reconstruction and cancellation, channel estimation, and data detection. In addition to simulation results, we verify the receiver performance using data sets collected from two experiments. In both time-invariant and time-varying channels, the proposed iterative receiver achieves robust performance in the presence of unknown interference.
- J. Catipovic, "Robust acoustic communication with underwater vehicles in noisy and jammed shallow water environments," in Proc. of MTS/IEEE OCEANS Conf., Oct. 1992.Google Scholar
- R. Hayford, D. Nagle, and J. Catipovic, "AUTEC undersea cellular network," in Poster in WUWNET09, Berkeley, California, Nov. 2009.Google Scholar
- M. Stojanovic, "Low complexity OFDM detector for underwater channels," in Proc. of MTS/IEEE OCEANS Conf., Boston, MA, Sep. 18--21, 2006.Google Scholar
- B. Li, S. Zhou, M. Stojanovic, L. Freitag, and P. Willett, "Multicarrier communication over underwater acoustic channels with nonuniform Doppler shifts," IEEE J. Ocean. Eng., Apr. 2008.Google Scholar
- K. Tu, D. Fertonani, T. M. Duman, M. Stojanovic, J. Proakis, and P. Hursky, "Mitigation of intercarrier interference for OFDM over time-varying underwater acoustic channels," IEEE JOE, Apr. 2011.Google Scholar
- Y. R. Zheng, C. Xiao, T. C. Yang, and W.-B. Yang, "Frequency-domain channel estimation and equalization for shallow-water acoustic communications," Elsevier J. of Physical Commun., vol. 3, pp. 48--63, Mar. 2010. Google ScholarDigital Library
- J. Laster and J. Reed, "Interference rejection in digital wireless communications," IEEE Signal Processing Magazine, vol. 14, no. 3, pp. 37--62, May 1997.Google ScholarCross Ref
- T. Li, W. H. Mow, and M. H. Siu, "A joint approach to erasure marking and Viterbi decoding for impulsive noise channels," in Proc. of SPAWC, Italy, Jun. 2003.Google Scholar
- R. Nilsson, F. Sjöberg, and J. LeBlanc, "A rank-reduced LMMSE canceller for narrowband interference suppression in OFDM-based system," IEEE Trans. Commun., vol. 51, no. 12, Dec. 2003.Google ScholarCross Ref
- D. Darsena and F. Verde, "Successive NBI cancellation using soft decisions for OFDM systems," IEEE Signal Processing Lett., vol. 15, pp. 873--876, Dec. 2008.Google ScholarCross Ref
- M. Morelli and M. Moretti, "Improved decoding of BICM-OFDM transmissions plagued by narrowband interference," IEEE Trans. Wireless, Jan. 2011. Google ScholarDigital Library
- C. R. Berger, S. Zhou, J. Preisig, and P. Willett, "Sparse channel estimation for multicarrier underwater acoustic communication: From subspace methods to compressed sensing," IEEE Trans. SP, Mar. 2010. Google ScholarDigital Library
- S. Mason, C. R. Berger, S. Zhou, and P. Willett, "Detection, synchronization, and Doppler scale estimation with multicarrier waveforms in underwater acoustic communication," IEEE J. Select. Areas Commun., vol. 26, no. 9, Dec. 2008. Google ScholarDigital Library
- J. Huang, S. Zhou, and P. Willett, "Nonbinary LDPC coding for multicarrier underwater acoustic communication," IEEE JSAC, Dec. 2008. Google ScholarDigital Library
- M. Tüchler, R. Koetter, and A. C. Singer, "Turbo equalization: Principle and new results," IEEE Trans. Commun., vol. 50, no. 5, pp. 754--766, May 2002.Google ScholarCross Ref
Index Terms
- Parameterized cancellation of partial-band partial-block-duration interference for underwater acoustic OFDM
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