© The Institution of Engineering and Technology
To solve the significant performance degradation of existing algorithms in the impulsive noise environment, a novel blind equalisation method called robust adaptive weighted multi-modulus algorithm is proposed in this Letter. The authors introduce an adaptive weight coefficient to suppress the effect of large output error in the weight updating process. Theoretical analysis indicates that the proposed algorithm can suppress the impulsive noise effectively. Moreover, it can accelerate the convergence speed. Simulation results illustrate the robust performance and fast convergence speed of the proposed algorithm under α-stable noise environment.
References
-
-
1)
-
11. Shao, M., Nikias, C.L.: ‘Signal processing with fractional lower order moments: stable processes and their applications’, Proc., 1993, 81, pp. 986–1010.
-
2)
-
5. Aalo, V.A., Peppas, K.P., Efthymoglou, G.: ‘Evaluation of average bit error rate for wireless networks with alpha-stable interference’, Electron. Lett.., 2014, 50, pp. 47–49 (doi: 10.1049/el.2013.3231).
-
3)
-
8. Yang, J., Werner, J.J., Dumont, G.A.: ‘The multimodulus blind equalization and its generalized algorithms’, J. Sel. Areas Commun.., 2002, 20, pp. 997–1015 (doi: 10.1109/JSAC.2002.1007381).
-
4)
-
4. Freitas, M., Egan, M., Clavier, L.: ‘Capacity bounds for additive symmetric α-stable noise channels’, Trans. Inf. Theory, 2017, 63, (8), pp. 5115–5123 (doi: 10.1109/TIT.2017.2676104).
-
5)
-
10. Jones, D.L.: ‘A normalized constant-modulus algorithm’. Conf. Record of the Twenty-Ninth Asilomar Conf. on Signals, Systems and Computers, 1995, vol. 1, pp. 694–697.
-
6)
-
33. Shah, S.M., Samar, R., Naqvi, S.M.R., et al: ‘Fractional order constant modulus blind algorithms with application to channel equalisation’, Electron. Lett., 2014, 50, (23), pp. 1702–1704 (doi: 10.1049/el.2014.2993).
-
7)
-
7. Oh, H., Nam, H.: ‘Simple structure of a receiver for blind communication in impulsive noise’. IEEE Int. Conf. Information and Communication Technology Convergence, 2016, pp. 588–592.
-
8)
-
23. Stojanovic, M., Preisig, J.: ‘Underwater acoustic communication channels: propagation models and statistical characterization’, IEEE Commun. Mag., 2009, 47, (1), pp. 84–89 (doi: 10.1109/MCOM.2009.4752682).
-
9)
-
9. Sharma, V., Raj, V.N.: ‘Convergence and performance analysis of Godard family and multimodulus algorithms for blind equalization’, Trans. Signal Process., 2005, 53, pp. 1520–1533 (doi: 10.1109/TSP.2005.843725).
-
10)
-
3. Farsad, N., Guo, W., Chae, C.B., et al: ‘Stable distributions as noise models for molecular communication’. IEEE Global Communications Conf., 2015, pp. 1–6.
-
11)
-
6. Li, S., Qiu, T.S.: ‘Tracking performance analysis of fractional lower order constant modulus algorithm’, Electron. Lett.., 2009, 45, pp. 545–546 (doi: 10.1049/el.2009.0561).
http://iet.metastore.ingenta.com/content/journals/10.1049/el.2017.2189
Related content
content/journals/10.1049/el.2017.2189
pub_keyword,iet_inspecKeyword,pub_concept
6
6