Channel Estimation for Powerline MC-CDMA System

Thiyagu Kathiyaiah

Faculty of Engineering and Technology, Multimedia University Jalan Ayer Keroh Lama, Melaka, Malaysia.

DOI: 10.4236/ijcns.2012.57048                

Abstract

Successful development of broadband over powerline is obviously a potential solution for wired communication systems with the existence of the powerline network. From past research, it is known that the powerline channel suffers from multipath fading, frequency selectivity and also impulsive noise. Multi Carrier Code Division Multiple Access (MC-CDMA) is a promising solution for an impulsive noise powerline channel. This paper starts with the MC-CDMA transmitter structure and focuses on powerline channel model, noise model and various types of available channel estimators. The main concern in Powerline Communication Systems is the existence of impulsive noise. The proposed pilot assisted channel estimation uses the modified least square estimator that reduces the effect of impulsive noise in the estimated channel impulse response.

Keywords

Channel Estimation; MC-CDMA; PLC; LS

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	S. Galli, A. Scaglione and K. Dostert, “Broadband is Power: Internet Access through the Power Line Network,” IEEE Communications Magazine, Vol. 41, No. 5, 2003, pp. 82-83. doi:10.1109/MCOM.2003.1200105
[2]	S. Galli, K. Kerpez, S. Ungar and D. Waring, “Home Networks and Internet Appliances Shape Service Provider Access Architectures,” Proceeding of the International Symposium on Services and Local Access, Stockholm, 18-23 June 2000.
[3]	H. Philipps, “Modeling of Power Line Communications Channels,” Proceeding of IEEE International Symposium on Power Line Communications and Its Applications, Lancaster, April 1999.
[4]	M. Zimmermann and K. Dostert, “A Multipath Model for the Power Line Channel,” IEEE Transactions on Communications, Vol. 50, No. 4, 2002, pp. 553-559. doi:10.1109/26.996069
[5]	H. Philipps, “Development of a Statistical Model for Power Line Communications Channels,” Proceeding of IEEE International Symposium on Power Line Communications and Its Applications, Limerick, April 2000.
[6]	M. Zimmermann and K. Dostert, “Analysis and Modeling of Impulsive Noise in Broad-Band Powerline Communications,” IEEE Transactions on Electromagnetic Compatibility, Vol. 44, No. 1, 2002, pp. 249-258. doi:10.1109/15.990732
[7]	L. Sanguinetti and M. Morelli, “Channel Acquisition and Tracking for MC-CDMA Uplink Transmission,” IEEE Transactions on Vehicular Technology, Vol. 55, No. 3, 2006, pp. 956-967. doi:10.1109/TVT.2005.863354
[8]	L. Sanguinetti, I. Cosovic and M. Morelli, “Channel Estimation for MC-CDMA Uplink Transmissions with Combined Equalization,” IEEE Journal on Selected Areas in Communications, Vol. 24, No. 6, 2006, pp. 1167-1178. doi:10.1109/JSAC.2005.864023
[9]	Y. Li, N. Seshadri and S. Ariyavisitakul, “Channel Estimation for OFDM Systems with Transmitter Diversity in Mobile Wireless Channels,” IEEE Journal on Selected Areas in Communications, Vol. 17, No. 3, 1999, pp. 461-471.