Izvorni znanstveni članak
https://doi.org/10.7305/automatika.2014.12.639
Frequency domain based LS channel estimation in OFDM based Power line communications
Mario Bogdanović
orcid.org/0000-0002-7661-9278
; Siemens Convergence Creators d.o.o., Županijska 20, 31000 Osijek, Croatia
Sažetak
This paper is focused on low voltage power line communication (PLC) realization with an emphasis on channel estimation techniques. The Orthogonal Frequency Division Multiplexing (OFDM) scheme is preferred technology in PLC systems because of its effective combat with frequency selective fading properties of PLC channel. As the channel estimation is one of the crucial problems in OFDM based PLC system because of a problematic area of PLC signal attenuation and interference, the improved LS estimation technique is proposed. We investigate and evaluate proposed frequency domain LS channel estimation method for OFDM based power line communication system. Also performance comparing with existing pilot based estimation algorithms towards proposed method in terms of their computational complexity, error correction, and suitability conditions is made.
Ključne riječi
Power Line Communication; OFDM; Channel Estimation; Least Squares estimation; Linear Minimum Mean-square Error estimation
Hrčak ID:
133204
URI
Datum izdavanja:
12.1.2015.
Posjeta: 2.117 *