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OFDM Communication System for PLC: Equalization Approaches

Silva, Pedro Alvito Silva ; Gerald, jabg

OFDM Communication System for PLC: Equalization Approaches, Proc Conference on Design of Circuits and Integrated Systems DCIS, Las Palmas, Spain, Vol. -, pp. - - -, November, 2010.

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An OFDM communication system suitable for power line communication (PLC) is described. It uses an interleaver/deinterleaver, a LDPC (Low Density Parity Check code) encoder/decoder and an equalizer. Two
different algorithms were used and compared in the equalizer: the Fast Kalman and the NLMS (Normalized
Least Mean Squares) algorithm. Simulation results regarding several different transmission conditions show
that the Fast Kalman receiver is preferable over the NLMS one in most of the cases. The performance of the
LDPC encoder/decoder is also analysed.