Öz
Feed for word neural networks (FFNN) have attracted a great attention, in digital communication area. Especially they are investigated as nonlinear equalizers at the receiver, to mitigate channel distortions and additive noise. The major drawback of the FFNN is their extensive training. We present a new approach to enhance their training efficiency by adapting the activation function. Adapting procedure for activation function extensively increases the flexibility and the nonlinear approximation capability of FFNN. Consequently, the learning process presents better performances, offers more flexibility and enhances nonlinear capability of NN structure thus the final state kept away from undesired saturation regions. The effectiveness of the proposed method is demonstrated through different challenging channel models, it performs quite well for nonlinear channels which are severe and hard to equalize. The performance is measured throughout, convergence properties, minimum bit error achieved. The proposed algorithm was found to converge rapidly, and accomplish the minimum steady state value. All simulation shows that the proposed method improves significantly the training efficiency of FFNN based equalizer compared to the standard training one.
Anahtar Kelimeler
Non linear equalization Feed for word neural networks (FFNN) Digital communication channels Adaptive sigmoidal activation function
Kaynakça
- Chandra, P., & Singh, Y. (2004). An activation function adapting training algorithm for sigmoidal feedforward networks. Neurocomputing, 61, 429-437.
- Corral, P., Ludwig, O., & Lima, A. D. C. (2010). Time-varying channel neural equalisation using Gauss-Newton algorithm. Electronics Letters, 46(15), 1055-1056.
- Daqi, G., & Genxing, Y. (2003). Influences of variable scales and activation functions on the performances of multilayer feedforward neural networks. Pattern Recognition, 36(4), 869-878.
- Haykin, S. (1999). Neural networks: A comprehensive foundation, 2nd ed. Englewood Cliffs, NJ: Prentice-Hall
- Lyu, X., Feng, W., Shi, R., Pei, Y., & Ge, N. (2015, April). Artificial neural network-based nonlinear channel equalization: A soft-output perspective. In 2015 22nd International Conference on Telecommunications (ICT) (pp. 243-248). IEEE.Proakis, J.G.& Salehi.M. (2008) Digital communications (5th Ed). McGraw-Hill.
- Saduf, M. A. W. (2013). Comparative study of back propagation learning algorithms for neural networks. International Journal of Advanced Research in Computer Science and Software Engineering, 3(12), 1151-1156.
- Schmidh ber, J. (2015). ‘Deep learning in neural networks n overview’.Neural Networks, vol.61, pp. 85–117.
- Wang, X., Tang, Z., Tamura, H., Ishii, M., & Sun, W. D. (2004). An improved backpropagation algorithm to avoid the local minima problem. Neurocomputing, 56, 455-460.
- Yu, C. C., Tang, Y. C., & Liu, B. D. (2002, October). An adaptive activation function for multilayer feedforward neural networks. In 2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering. TENCOM'02. Proceedings. (Vol. 1, pp. 645-650). IEEE.
- Zerdoumi, Z., Chicouche, D., & Benatia, D. (2015). Neural networks based equalizer for signal restoration in digital communication channels. International Letters of Chemistry, Physics and Astronomy, 55(1), 191-204.
- Zerdoumi, Z., Chikouche, D., & Benatia, D. (2016). Multilayer perceptron based equalizer with an improved back propagation algorithm for nonlinear channels. International Journal of Mobile Computing and Multimedia Communications (IJMCMC), 7(3), 16-31.
- Zerdoumi, Z., Chikouche, D., & Benatia, D. (2016). An improved back propagation algorithm for training neural network-based equaliser for signal restoration in digital communication channels. International Journal of Mobile Network Design and Innovation, 6(4), 236-244.
- Zerguine, A., Shafi, A., & Bettayeb, M. (2001). Multilayer perceptron-based DFE with lattice structure. IEEE transactions on neural networks, 12(3), 532-545.
Öz
Kaynakça
- Chandra, P., & Singh, Y. (2004). An activation function adapting training algorithm for sigmoidal feedforward networks. Neurocomputing, 61, 429-437.
- Corral, P., Ludwig, O., & Lima, A. D. C. (2010). Time-varying channel neural equalisation using Gauss-Newton algorithm. Electronics Letters, 46(15), 1055-1056.
- Daqi, G., & Genxing, Y. (2003). Influences of variable scales and activation functions on the performances of multilayer feedforward neural networks. Pattern Recognition, 36(4), 869-878.
- Haykin, S. (1999). Neural networks: A comprehensive foundation, 2nd ed. Englewood Cliffs, NJ: Prentice-Hall
- Lyu, X., Feng, W., Shi, R., Pei, Y., & Ge, N. (2015, April). Artificial neural network-based nonlinear channel equalization: A soft-output perspective. In 2015 22nd International Conference on Telecommunications (ICT) (pp. 243-248). IEEE.Proakis, J.G.& Salehi.M. (2008) Digital communications (5th Ed). McGraw-Hill.
- Saduf, M. A. W. (2013). Comparative study of back propagation learning algorithms for neural networks. International Journal of Advanced Research in Computer Science and Software Engineering, 3(12), 1151-1156.
- Schmidh ber, J. (2015). ‘Deep learning in neural networks n overview’.Neural Networks, vol.61, pp. 85–117.
- Wang, X., Tang, Z., Tamura, H., Ishii, M., & Sun, W. D. (2004). An improved backpropagation algorithm to avoid the local minima problem. Neurocomputing, 56, 455-460.
- Yu, C. C., Tang, Y. C., & Liu, B. D. (2002, October). An adaptive activation function for multilayer feedforward neural networks. In 2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering. TENCOM'02. Proceedings. (Vol. 1, pp. 645-650). IEEE.
- Zerdoumi, Z., Chicouche, D., & Benatia, D. (2015). Neural networks based equalizer for signal restoration in digital communication channels. International Letters of Chemistry, Physics and Astronomy, 55(1), 191-204.
- Zerdoumi, Z., Chikouche, D., & Benatia, D. (2016). Multilayer perceptron based equalizer with an improved back propagation algorithm for nonlinear channels. International Journal of Mobile Computing and Multimedia Communications (IJMCMC), 7(3), 16-31.
- Zerdoumi, Z., Chikouche, D., & Benatia, D. (2016). An improved back propagation algorithm for training neural network-based equaliser for signal restoration in digital communication channels. International Journal of Mobile Network Design and Innovation, 6(4), 236-244.
- Zerguine, A., Shafi, A., & Bettayeb, M. (2001). Multilayer perceptron-based DFE with lattice structure. IEEE transactions on neural networks, 12(3), 532-545.
Ayrıntılar
| Birincil Dil | İngilizce |
|---|---|
| Konular | Mühendislik |
| Bölüm | Makaleler |
| Yazarlar | |
| Yayımlanma Tarihi | 31 Aralık 2021 |
| Yayımlandığı Sayı | Yıl 2021Cilt: 14 |
