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In this paper, we focus on the selection of a pilot pattern to track thephase noise in high frequency bands in a DFT-s-OFDM chain. By considering theWiener filter at the receiver side to perform the tracking, we use the innercost function of the said filter as the cost function for the pilot selection.To obtain this cost function, the phase noise autocorrelation is required.Therefore, we introduce a new mathematical approximation of the autocorrelationfunction of the practical 3GPP phase noise model. At first, this leads to ananalytical expression of the Wiener filter coefficients. Then, the saidcoefficients allow us to obtain an analytical expression of the cost function.Thus, by means of this result, we are able to provide a pilot pattern thatjointly satisfies a constraint on the pilot overhead and a constraint on theminimum performance of the Wiener filter.

Optimized pilot distribution to track the phase noise in DFT-s-OFDM for sub-THz systems