Novel DFE for Underwater Acoustic Channels

Abstract:

In underwater acoustic communication systems, the channel equalization community has recently given much attention to decision feedback equalization (DFE). It is because that the DFE offers intersymbol interference (ISI) cancellation with reduced noise enhancement. However, its key algorithm such as constant modulus algorithm (CMA) has moderate convergence rate and steady-state mean square error (MSE), which is not sufficient for the receive system of communication. So a new cost function is defined and then a novel DFE based on such cost function is proposed. The efficiency of the proposed DFE is proved by computer simulations.

• Periodical: Advanced Materials Research (Volumes 760-762)
• Pages: 691-694
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.760-762.691
• Online since: September 2013
• Authors: Yan Liu, Yuan Min Li
• Keywords: Blind Equalization, Decision Feedback Equalizer, Underwater Acoustic Channels

References

[1] M. Austin, Decision feedback equalization for digital communication over dispersive channels, Technical Report 461, MIT Research Laboratory of Electronics Technical Report, (1967).

[2] D. A. George, R. R. Bowen and J. R. Storey, An adaptive decision feedback equalizer, IEEE Trans. Commun., COM-19(3): 281-293, (1971).

DOI: 10.1109/tcom.1971.1090652

[3] P. Monsen, Theoretical and measured performance of DFE modem on fading multipath channel, IEEE Trans. Commun., COM-25(10): 1144-1153, (1977).

DOI: 10.1109/tcom.1977.1093742

[4] Goupil A and Palicot J, An efficient blind decision feedback equalizer, IEEE Communications Letters, 14(5): 462-464, (2010).

DOI: 10.1109/lcomm.2010.05.092150

[5] Magarini M., Barletta L. and Spalvieri A, Efficient Computation of the Feedback Filter for the Hybrid Decision Feedback Equalizer in Highly Dispersive Channels, IEEE Transactions on Wireless Communications, 11(6): 2245-2253, (2012).

DOI: 10.1109/twc.2012.040412.111254

[6] Kongara, G, Taylor D.P. and Martin P.A., Space-Frequency Decision Feedback Equalizer, IEEE Transactions on Vehicular Technology, 60(4): 1626-1639, (2011).

DOI: 10.1109/tvt.2011.2131159

[7] Chang-Lin Hsieh and Shen-Iuan Liu, Decision Feedback Equalizers Using the Back-Gate Feedback Technique, IEEE Transactions on Circuits and Systems II: Express Briefs, 58(12): 897-901, (2011).

DOI: 10.1109/tcsii.2011.2172520

[8] Neves A and Panazio C., A Class of Channels Resulting in Ill-Convergence for CMA in Decision Feedback Equalizers, IEEE Transactions on Signal Processing, 58(11): 5736-5743, (2010).

DOI: 10.1109/tsp.2010.2065225

[9] R. Lucky, Automatic equalization for digital communication, Bell System Technical Joumal, 44: 547-588, (1965).

DOI: 10.1002/j.1538-7305.1965.tb01678.x

[10] F. C. C. De Castro, M. C. F. De Castro and D. S. Arantes, Concurrent blind deconvolution for channel equalization, " Proc. ICC, 2001, Helsinki, Finland, 2: 366-371, (2001).

DOI: 10.1109/icc.2001.936964

[11] C. R. Johnson et al., Blind equalization using the constant modulus criterion: a review, Proceedings of the IEEE, 86(10): 1927-1950, (1998).

DOI: 10.1109/5.720246

[12] Rao wei and Guo ye-cai, New constant modulus blind equalization algorithm based on variable segment error function, Journal of System Simulation, 19(12): 2686-2689, (2007).