Symbol by symbol reduced complexity highly selective OFDM channel estimation

In OFDM systems, receiving techniques are mainly sensitive to the employed channel estimation strategy. Channel modelling is a crucial point in deriving a channel estimation method. We address here a simple channel model taking into account physical characteristics of the channel. We also show that this simple model can lead to good performance in symbol-by-symbol reception schemes.

1 Introduction

In recent years, many studies have been lead on OFDM receiving techniques and specially about channel estimation methods [3], [1], [4], [5]–. Modelling the channel is a decisive step in channel estimation, and the complexity of the model confers the complexity of the estimation technique. Hence it is very important to have simple models. Simple models usually don't take into account the physical parameters of the channel.