Capacity outer bound and degrees of freedom of Wiener phase noise channels with oversampling

Luca Barletta, Stefano Rini

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The discrete-time Wiener phase noise channel with an integrate-and-dump multi-sample receiver is studied. A novel outer bound on the capacity with an average input power constraint is derived as a function of the oversampling factor. This outer bound yields the degrees of freedom for the scenario in which the oversampling factor grows with the transmit power P as Pα. The result shows, perhaps surprisingly, that the largest pre-log that can be attained with phase modulation at high signal-to-noise ratio is at most 1/4.

Original languageEnglish
Title of host publication2017 IEEE Information Theory Workshop, ITW 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages614-618
Number of pages5
ISBN (Electronic)9781509030972
DOIs
StatePublished - 31 Jan 2018
Event2017 IEEE Information Theory Workshop, ITW 2017 - Kaohsiung, Taiwan
Duration: 6 Nov 201710 Nov 2017

Publication series

NameIEEE International Symposium on Information Theory - Proceedings
Volume2018-January
ISSN (Print)2157-8095

Conference

Conference2017 IEEE Information Theory Workshop, ITW 2017
CountryTaiwan
CityKaohsiung
Period6/11/1710/11/17

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