A discrete-time Wiener phase noise channel with an integrate-and-dump multi-sample receiver is studied. An upper bound to the capacity with an average input power constraint is derived, and a high signal-to-noise ratio (SNR) analysis is performed. If the oversampling factor grows as SNR<sup>α</sup> for 0 ≤ α ≤ 1, then the capacity pre-log is at most (1 + α)/2 at high SNR.
Upper bound on the capacity of discrete-time Wiener phase noise channels
BARLETTA, LUCA;
2015-01-01
Abstract
A discrete-time Wiener phase noise channel with an integrate-and-dump multi-sample receiver is studied. An upper bound to the capacity with an average input power constraint is derived, and a high signal-to-noise ratio (SNR) analysis is performed. If the oversampling factor grows as SNRα for 0 ≤ α ≤ 1, then the capacity pre-log is at most (1 + α)/2 at high SNR.File in questo prodotto:
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