Robust DVB-T/H Receiver in Fast Fading Channels

We previously proposed an iterative decision-directed channel estimation and inter-carrier interference (ICI) cancellation (IDD-ICICan) technique based on estimating the diagonal and off-diagonal vectors of the channel frequency response matrix (CFRM) of a double-selective fading channel. In this paper, we first present some new theoretical analysis that is missing from the previous investigation, including the correlation property within each off-diagonal vectors of the CFRM, and the derivation of the constant scaling relation between different off-diagonal vectors. An enhanced IDD-ICICan (EIDD-ICICan) is then proposed for better performance. At last, we report the simulation performance of a Digital Video Broadcasting (DVB) receiver equipped with the EIDD-ICICan, demonstrating its robust performance even in very fast fading channels. In addition, we show that the superior performance is achieved with well affordable complexity.