A Study on Channel Estimation using Scattered Pilot Symbols under Class A Noise Environment

Abstract

In OFDM, one of the issues is the influence of the impulsive noise in the channel. In the compensation of impulsive noise, it is necessary to estimate the channel. In conventional channel estimation scheme has low performance of time domain and it is issue that estimation accuracy in time varying channel such as Rayleigh fading. Therefore, channel estimation scheme using time sample replacement scheme adapted for scattered pilot symbols is proposed in this paper. By computer simulations, the proposed scheme can achieve better characteristics than the conventional scheme.