ESTIMATION OF PLC CHANNELS: AN ADAPTIVE SIMPLIFIED MAP APPROACH

Year 2015, Volume: 15 Issue: 2, 1951 - 1958, 01.12.2015

Selva Muratoğlu Çürük

Abstract

An adaptive channel estimation method, to be used in Power Line Communication systems with Orthogonal
Frequency Division Multiplexing modulation, is presented in this paper. The proposed Maximum A-Posteriori based
estimator assumes that the channel is frequency selective and slowly time varying and estimates the subchannel
correlations adaptively. The performance of the estimator is investigated by evaluating the Mean Square Error of
estimations. The simulations are done using measured channel data with additive white Gaussian noise assumption,
which show that the proposed estimator has better performance compared to Maximum Likelihood estimation. The
performance of the proposed estimator is also analysed under the assumption of colored noise, which is the common
case in power lines. The simulations have declared that the performance of the proposed estimator is quite satisfactory,
even when the noise is coloured. 

Keywords

MAP Channel Estimation, Orthogonal Frequency Division Multiplexing, Power Line Communication

References

• [1] HomePlug Powerline Alliance Inc., “HomePlug AV White Paper”, [Online] Available: http://www.homeplug.org/tech/ whitepapers/HPAV-White-Paper_ 050818.pdf, 2005. [2] HomePlug Powerline Alliance, Inc., “HomePlug AV2 Technology”, [Online] Available: http://www.homeplug.org/ tech/whitepapers/ HomePlug_AV2_White_Paper_v1.0.pdf, 2012. [3] HomePlug Powerline Alliance, Inc., “Home Plug Green PHY, The Standard For In-Home Smart Grid Powerline Communications”, [Online] Available: http:// www.homeplug.org/tech/whitepapers/HomePlug_Green_PH Y_ whitepaper_100614.pdf, 2010. [4] N. Pavlidou, A.J.H. Vinck, J. Yazdani, B. Honaty, “Power Line Communications: State of the Art and Future Trends”, IEEE Communications Magazine, Vol: 41, No: 4, pp. 34-40, 2003. [5] Information and Communication Technologies (ICT), Seventh Framework Programme: "PLC Channel Characterization and Modelling", Theme 3 ICT-213311 OMEGA, Tech. Rep., v1.2, 2011. [6] X. Ding, J. Meng, B.R. Petersen, “Blind Channel Estimation for HomePlug Power-Line Communications: A Feasibility?”, IEEE Transactions on Power Delivery, Vol: 26, No: 2, pp. 754-763, 2011. [7] A.A.M. Picorone, L.R. Amado, M.V. Ribeiro, “Linear and Periodically Time-Varying PLC Channels Estimation in the Presence of Impulsive Noise”, IEEE International Symposium on Power Line Communications and Its Applications, pp. 255-260, 2010. [8] S.R. Mello, M.A. Grivet, “Modeling, Simulation and Estimation of PLC Channels”, 2006 International Telecommunications Symposium, pp. 201-206, 2006. [9] H.M. Oh, S. Choi, Y. Kim, J.J. Lee, K.C. Whang, “A Systematic Approach to Analyzing Multipath Parameters From PLC Channel Response”, IEEE Transactions on Power Delivery, Vol: 23, No: 4, pp. 1921-1929, 2008. [10] Z. Rui, Z. Chao, “Channel Estimation Based on Fuzzy Inference for OFDM System over Low Voltage Power Line”, Power and Energy Engineering Conference, pp. 1-4, 2010. [11] M. Raugi, M. Tucci, “Power Line Communications Channel Estimation and Tracking by a Competitive Neural Network”, IEEE Transactions on Consumer Electronics, Vol: 52, No: 4, pp. 1213-1219, 2006. [12] G.A. Laguna-Sanchez, R. Barron-Fernandez, A. PrietoGuerrero, “Wavelet-based Improvement for Channel Estimation in a Power-line Communication Environment Impaired by Impulsive Noise”, Electronics, Robotics and Automotive Mechanics Conference, pp. 523-528, 2010. [13] A.M. Tonello, N. Palermo, “Soft Detection with Synchronization and Channel Estimation from Hard Quantized Inputs in Impulsive UWB Power Line Communications”, 9th IEEE International Conference on Ultra-Wideband, pp. 560-564, 2009. [14] D.Bueche, P. Corlay, M. Gazalet, F.X. Coudoux, “A method for Analyzing the Performance of Comb-type Pilot-aided Channel Estimation in Power Line Communications” IEEE Transactions on Consumer Electronics, Vol: 54, No: 3, pp. 1074-1081, 2008. [15] A. Musolino, M. Raugi, M. Tucci, “Cyclic Short-Time Varying Channel Estimation in OFDM Power-Line Communication”, IEEE Transactions on Power Delivery, Vol: 23, No: 1, pp.157-163, 2008. Selva M. ÇÜRÜK/ IU-JEEE Vol. 15(2), (2015), 1951-1957 1957 [16] Y.H. Kim, “Multipath Parameter Estimation for PLC Channels Using the GEESE Algorithm”, IEEE Transactions on. Power Delivery, Vol: 25, No: 4, pp. 2339-2345, 2010. [17] X. Zhiyuan, M. Yinghong, “A New Adaptive Channel Estimation for Orthogonal Frequency Division Modulation in Power Line Communication”, 4th International Conference on Communications, Circuits and Systems, Vol: 1, pp. 389-393, 2006. [18] Z. Rui, S. Yingfu, X. Zhengsheng, W. Shun, “Channel Estimation Based on Improved LMS for OFDM System over Low Voltage Power Line”, 6th International Forum on Strategic Technology, pp. 911-914, 2011. [19] R. Mo, S.W. Oh, Y. Zeng, S.R. Lie, “Channel Estimation for Power Line OFDM Systems with Unknown Colored Noise Exploiting Real Signal Transmission”, IEEE International Symposium on Power Line Communications and Its Applications, pp. 149-153, 2009. [20] S.M. Çürük, Y. Tanık, “Simplified MAP Estimator for OFDM Systems under Fading”, European Transactions on Telecommunications, Vol: 16, No: 4, pp. 357-364, 2010. [21] M. Zimmermann, K. Dostert, “A multipath model for the powerline channel”, IEEE Transactions on Communication, Vol: 50, No: 4, pp. 553-559, 2002. [22] T. Esmailian, F.R. Kschishang, P.G. Gulak, “In-building power lines as high-speed communication channels: channel characterization and a test channel ensemble”, International Journal of Communication Systems, Vol: 16, pp. 381-400, 2003. [23] Y.H. Ma, P.L. So, E. Gunawan, “Performance analysis of OFDM systems for broadband power line communications under impulsive noise and multipath effects”, IEEE Transactions on Power Delivery, Vol: 20,pp. 674‒ 682, 2005. [24] H. Meng, Y.L. Guan, S.X. Chen, “Modeling and analysis of noise effects on broadband power-line communications”, IEEE Transactions on Power Delivery, Vol: 20, pp. 630‒ 637, 2005. [25] N. Andreadou, F.N.N. Pavlidou, “Modeling the Noise on the OFDM Power-Line Communications System”, IEEE Transactions on Power Delivery, Vol: 25, pp. 150‒ 157, 2010.