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In this work, we introduce a new approach for channel estimation in single frequency networks (SFN). The intention is to exploit the a-priori knowledge of the SFN scenario. Conventional pilot schemes for SFN design the pilot scheme to deal with the aggregate channel. In this paper, we show that by being aware of how this long channel is generated, we can design a more efficient pilot scheme. The core...
In this paper we refine a previously proposed model of time-varying OFDM systems, by taking into account the effects of non-ideal time synchronization. The considered non-ideal time synchronization includes the positioning of the receiver discrete Fourier transform (DFT) window and a cyclic shift of the input data. In OFDM systems with time-invariant channel, these two operations are equivalent. However,...
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