Representação Esparsa para Estimação de Canal PLC: Uma Análise Preliminar

This paper discusses a preliminary analysis, based on computer simulations, of the sparse representation of power line communications (PLC) channels. Additionally, it exams the possibility of reducing the number of pilots in OFDM signals when compressive sensing (CS) techniques are applied to estimate such channels. The attained results suggest that the use of CS techniques to estimate linear and time invariant PLC channels corrupted by additive white gaussian noise allows for the reduction if the required number of pilot subcarriers in OFDM symbols, which is a timely issue for increasing the throughput of PLC systems based on OFDM schemes.