Channel Estimation and Equalization of Broadband PLC Systems ? Part 1: Complementary Sequences Based Channel Estimation in OFDM

MOYA, S.; HADAD, M.; DONATO, P. G.; FUNES, M.; CARRICA, D.

Buenos Aires

Congreso; IEEE Argencon 2016; 2016

IEEE - UTN

In the context of  broadband  Power  Line Communications (PLC), this work proposes an estimation and equalization method for  block-pilot  OFDM systems.  The proposal is based on the correlation properties of Complementary Sequences (CS), performing all the operations in the frequency domain, which allows to  reduce communication errors and  the  overall  computational effort. The performance of the method is compared with other approaches, as the Least-Squares (LS) and Linear Minimum Mean-Square  Error (LMMSE).  Simulations were performed by using two realistic PLC channels, as well as additive white Gaussian noise (AWGN) and diverse configurations of impulse noise (IN) modeled by Middleton Class A distribution (MCA). Results are reported as Bit Error-Rate (BER) graphs, showing that the proposal produces better results than LS, approaching to the good performance  of LMMSE  but  with lower computational requirements.