Lower Bound on the Capacity of Continuous-Time Wiener Phase Noise Channels

Abstract

A continuous-time Wiener phase noise channel with an integrate-and-dump multi-sample receiver is studied. A lower bound to the capacity with an average input power constraint is derived, and a high signal-to-noise ratio (SNR) analysis is performed. The capacity pre-log depends on the oversampling factor, and amplitude and phase modulation do not equally contribute to capacity at high SNR.

Extended version of a paper submitted to ISIT 2015. 9 pages and 1 figure. arXiv admin note: text overlap with arXiv:1411.0390