Multi-sample Receivers Increase Information Rates for Wiener Phase Noise Channels

TL;DR

This paper demonstrates that multi-sample receivers significantly improve information rates in Wiener phase noise channels, especially at high SNR, by leveraging oversampling techniques.

Contribution

It introduces a discrete-time channel model with multi-sample reception and provides tight lower bounds on achievable information rates through numerical simulations.

Findings

Oversampling benefits both strong and weak phase noise scenarios.

Multi-sample receivers outperform other discrete-time models.

Higher information rates are achievable at high SNR with oversampling.

Abstract

A waveform channel is considered where the transmitted signal is corrupted by Wiener phase noise and additive white Gaussian noise (AWGN). A discrete-time channel model is introduced that is based on a multi-sample receiver. Tight lower bounds on the information rates achieved by the multi-sample receiver are computed by means of numerical simulations. The results show that oversampling at the receiver is beneficial for both strong and weak phase noise at high signal-to-noise ratios. The results are compared with results obtained when using other discrete-time models.