Estimação de Canal PLC Baseado em Sinais Pilotos para Modulação OFDM: Uma Revisão (PLC Channel Estimation Based on Pilots Signal for OFDM Modulation: A Review)

Antônio Ângelo Missiaggia Picorone (picorone@ieee.org)1, Thiago Rodrigues Oliveira (thiago.oliveira@ifsudestemg.edu.br)2, Moisés Vidal Ribeiro (mribeiro@engenharia.ufjf.br)3


1Universidade Federal de Juiz de Fora, CES/JF, CEMIG
2Instituto Federal de Educacção, Ciência e Tecnologia do Sudeste de Minas Gerais
3Universidade Federal de Juiz de Fora

This paper appears in: Revista IEEE América Latina

Publication Date: June 2014
Volume: 12,   Issue: 4 
ISSN: 1548-0992


Abstract:
This contribution aims at discussing channel esti- mation techniques for power line communication systems, which makes use of multicarrier modulation based on orthogonally frequency division multiplexing and pilots signals. In this regards, channel models for linear and time varying and linear and periodically time varying channels are described as well as models to impulsive noises. Then, a comprehensive analysis of channel estimation techniques for OFDM-based power line communication systems is addressed. Basically, Adaptive or non- adaptive and supervised or non-supervised estimation techniques are addressed because the power line channels can be modeled, due to the load characteristic, as linear and time invariant, linear and time varying, and linear and periodically time varying. Several simulation results considering power line channel and noise models emphasize the effectiveness of several estimation techniques.

Index Terms:
OFDM, power line communication, channel estimation, digital communication   


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