Blind equalization using reversible watermarking

A blind equalization method based on reversible watermarking is presented. A chunk of data is selected from the data to be transmitted. This chunk of data is hidden in the entire data using digital watermarking. For watermarking, DS-CDMA based spread spectrum watermarking scheme is used. On receiving side, watermark is extracted from the watermarked data. With the help of received chunk of data and the extracted watermark, which is actually extracted version of the selected chunk of data, the channel is equalized by using Normalized LMS algorithm. In this method, neither receiver requires to know the training sequence in advance nor the sender requires to send training sequence. After equalization, watermark can be removed from the corrected watermarked data to recover the original data.

[1]  Jr. L.R. Litwin.  Blind channel equalization , 1999 .

[2]  J.M.T. Romano,et al.  Adaptive equalization based on watermarking , 2006, 2006 International Telecommunications Symposium.

[3]  Malay Kumar Kundu,et al.  An Efficient Digital Watermarking Scheme for Dynamic Estimation of Wireless Channel Condition , 2007, 2007 International Conference on Computing: Theory and Applications (ICCTA'07).

[4]  Chao Zhao,et al.  Optimizing Blind Equalization Intelligent Algorithm for Wireless Communication Systems , 2007, Third International Conference on Natural Computation (ICNC 2007).

[5]  Jürgen Götze,et al.  Computationally efficient blind equalization based on digital watermarking , 2010, 2010 18th European Signal Processing Conference.

[6]  Onkar Dabeer,et al.  Convergence analysis of the constant modulus algorithm , 2003, IEEE Trans. Inf. Theory.

[7]  P. Comon,et al.  Blind and semi-blind equalization based on the constant power criterion , 2005, IEEE Transactions on Signal Processing.

[8]  J. Gotze,et al.  Increased Robustness and Security of Digital Watermarking Using DS-CDMA , 2007, 2007 IEEE International Symposium on Signal Processing and Information Technology.