Analysis of differentially modulated cooperative communications over asymmetric fading channels

Sara Almaeeni, Paschalis C. Sofotasios, Sami Muhaidat, George K. Karagiannidis

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

1 Scopus citations

Abstract

Differential modulation has largely re-attracted the attention of academia and industry due to its advantages relating to simple implementation and no need for knowledge of channel state information. The present work analyzes the average bit error rate performance of dual-hop cooperative systems over generalized multipath fading conditions. The considered system is differentially modulated and is assumed to operate based on the amplify-and-forward relaying protocol. Therefore, the main advantage of the considered set up is that it does not require any channel state information neither at the relay nor at the destination nodes. Novel closed-form expressions are derived for the end-to-end error rate under asymmetric generalized multipath fading conditions, which are encountered in realistic wireless communication scenarios. These expressions are subsequently employed in quantifying the effect of generalized fading conditions on the achieved bit error rate performance. It is shown that the impact of multipath fading and shadowing effects is detrimental at both high and low signal-to-noise ratio regimes as the corresponding deviations are often close to an order of magnitude. The incurred difference is also significantly different than the conventional Rayleigh fading conditions, which verifies that accurate channel characterization is of paramount importance in the effective design of conventional and emerging wireless technologies. In addition, it indicates that differential modulation can be a suitable modulation scheme for relay systems, under certain conditions, since it can provide adequate performance at a reduced implementation complexity.

Original languageBritish English
Title of host publicationProceedings - 2018 International Conference on Advanced Communication Technologies and Networking, CommNet 2018
EditorsGeorge K. Karagiannidis, Paschalis C. Sofotasios, Paschalis C. Sofotasios, Faissal EI Bouanani, Fouad Ayoub
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-8
Number of pages8
ISBN (Electronic)9781538646090
DOIs
StatePublished - 16 May 2018
Event2nd International Conference on Advanced Communication Technologies and Networking, CommNet 2018 - Marrakech, Morocco
Duration: 2 Apr 20184 Apr 2018

Publication series

NameProceedings - 2018 International Conference on Advanced Communication Technologies and Networking, CommNet 2018

Conference

Conference2nd International Conference on Advanced Communication Technologies and Networking, CommNet 2018
Country/TerritoryMorocco
CityMarrakech
Period2/04/184/04/18

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