RT Journal Article
T1 Channel Estimation for OFDM-based Indoor Broadband Power Line Communication Systems
A1 Cortés-Arrabal, José Antonio
A1 Cañete-Corripio, Francisco Javier
A1 Díez-del-Río, Luis
K1 Redes de banda ancha
AB State-of-the-art indoor broadband power line communications (PLC) systems use orthogonal frequency division multiplexing (OFDM) signals with constellations up to10 bits/symbol, which makes channel estimation a key aspect.This paper focuses on the initial channel estimation used in thepayload, which might be further adapted by means of a decision-directed strategy. This initial estimate has to be computed on a per-frame basis and can be accomplished from the preamble, the header symbol (assuming that it has been correctly decoded) or from a combination of both. This work proposes simple channel estimation techniques for this problem and derives their most appropriate parameters. They are compared with the linearminimum mean squared-error (LMMSE) estimator and others commonly used in wireless scenarios by considering both their performance and computational complexity. The factors limiting the performance of the estimators based on the preamble and the header symbols are analyzed and the implications of the differ-ences between PLC and wireless channels, such as the absence of fading, in the design of estimation techniques that require knowledge of the channel statistics are discussed. A performance analysis of the considered techniques is accomplished in a set of 171 measured indoor PLC channels. Obtained results indicatethat estimators from the header perform better than those based on the preamble symbols and we provide a computationally simple estimator that gives nearly optimum performance by combining estimates from both the preamble and the header symbols.
PB IEEE
YR 2023
FD 2023-03
LK https://hdl.handle.net/10630/41216
UL https://hdl.handle.net/10630/41216
LA eng
NO J. A. Cortés, F. J. Cañete and L. Díez, "Channel estimation for OFDM-based indoor broadband power line communication systems," in Journal of Communications and Networks, vol. 25, no. 2, pp. 151-166, April 2023, doi: 10.23919/JCN.2022.000056
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 28 feb 2026