Performance Comparison of Modified BPSK-OFDM and QFSK-OFDM in PLC Channel Noise

The article describes and compares two OFDM based communications schemes for reducing the effects of combination Narrowband Interference (NBI) Impulsive Noise (IN), which are noise types typical in Power Line Communication (PLC). Modified BPSK-OFDM (called MBPSK, brevity) QFSK-OFDM QFSK, brevity), non-conventional schemes. We give a description schemes, showing how they derived also show their similarities eventually compare performances. Performance simulation results, terms bit error rate, given to systems under effect IN NBI. popular Middleton Class A model is used modelling IN. results that MBPSK scheme outperforms QFSK minimum distance, hence probability when no preprocessing performed. However, clipping/nulling, both reach rate floor.