OFDM receiver performance analysis with measured power line channel model for coded OFDM system

Abstract

This paper reports the results of wideband channel measurements conducted on in apartment environments. Two kinds of channel measurements were performed: impulse response measurements and noise signal measurements. In measure based channel model, the performance degradation is analyzed due to timing synchronization and colored noise in orthogonal frequency division multiplexing (OFDM) based power line communication (PLC) systems and then proceeds to propose a new receiver scheme for channel estimation and soft decision decoding scheme under imperfect channel estimation. Simulation results show that the proposed algorithm can efficiently eliminate the effects of imperfect channel estimation and colored noise for coded OFDM system.