On the performance of full-duplex relaying schemes for point-to-point MIMO with large antenna arrays

Mengxue Tang, Mikko Vehkaperä

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

Abstract

The performance of full-duplex (FD) decode-and-forward (DF) relaying systems for point-to-point multi-antenna transmission is considered. Three different relaying schemes are investigated: co-located, distributed cooperative and distributed non-cooperative. To mitigate the effects of loop interference (LI) caused by FD operation at the relay, a digital cancellation scheme based on pilot-aided channel estimation is used. Asymptotic analysis shows that all considered systems are inter-pair and LI free when the number of antennas at the source and destination grows without bound while the relay has a finite number of antennas. More careful analysis of the achievable rate reveals, however, that the LI has a significant impact on the performance of finite sized systems. The numerical results illustrate that non-cooperative distributed relaying suffers severely from FD operation under realistic scenarios, while cooperation allows for efficient LI cancellation and improved spectral efficiency over half-duplex (HD) systems. The results also demonstrate that the optimal number of antennas used by a FD relay is only 10%-30% of the size of the array used at the source and destination, while HD relaying benefits from fractions of up to 50%.
Original languageEnglish
Title of host publication2017 International Symposium on Wireless Communication Systems, ISWCS
PublisherIEEE Institute of Electrical and Electronic Engineers
Pages246-251
ISBN (Electronic)978-1-5386-2913-0
ISBN (Print)978-1-5386-2914-7
DOIs
Publication statusPublished - 14 Nov 2017
MoE publication typeA4 Article in a conference publication
Event2017 International Symposium on Wireless Communication Systems, ISWCS 2017 - Bologna, Italy
Duration: 28 Aug 201731 Aug 2017

Publication series

SeriesInternational Symposium on Wireless Communication Systems
Volume2017
ISSN2154-0217

Conference

Conference2017 International Symposium on Wireless Communication Systems, ISWCS 2017
CountryItaly
CityBologna
Period28/08/1731/08/17

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  • Cite this

    Tang, M., & Vehkaperä, M. (2017). On the performance of full-duplex relaying schemes for point-to-point MIMO with large antenna arrays. In 2017 International Symposium on Wireless Communication Systems, ISWCS (pp. 246-251). [8108118] IEEE Institute of Electrical and Electronic Engineers. International Symposium on Wireless Communication Systems, Vol.. 2017 https://doi.org/10.1109/ISWCS.2017.8108118