JOINT ESTIMATION OF CHANNEL AND IMPULSE NOISE IN AN OFDM BASED SYSTEM FOR A POWERLINE NETWORK USING ADAPTIVE GUARD LENGTH

Abstract

This paper considers OFDM based joint estimation of channel and impulse noise with an adaptive guard length for a powerline channel. The purpose of adaptive guard length is to cater for the channel variations caused due to time varying behavior of powerline network. Results show that the utilization of joint channel and impulse noise estimation gives improved bit error rate performance as well as efficient utilization of available bandwidth. Also the simulation results confirm that performance of proposed adaptive guard band method with joint estimation is better as compared to the fixed guard length for the communication system.