On Optimum Pilot Design for Comb-Type OFDM Transmission over Doubly-Selective Channels.

IEEE Transactions on Communications (Impact Factor: 1.75). 01/2011; 59:930-935. DOI: 10.1109/TCOMM.2011.020411.100151
Source: DBLP

ABSTRACT We consider comb-type OFDM transmission over doubly-selective channels. Given a fixed number and total power of the pilot subcarriers, we show that the MMSE-optimum pilot design consists of identical equally-spaced clusters where each cluster is zero-correlation-zone sequence.

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