Transceiver Optimization for Multiuser Multiple-Input Multiple-Output Full-Duplex Amplify-and-Forward Relay Downlink Communications

This paper considers the transceiver design in a multiuser multiple-input multiple-output (MIMO) full-duplex (FD) amplify-and-forward (AF) relay downlink communication system, where users simultaneously transmit data via an FD relay node. The design incorporates an imperfect loop interference (LI) c...

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Veröffentlicht in:Telecom (Basel) Jg. 5; H. 1; S. 216 - 227
Hauptverfasser: Shao, Yunlong, Gulliver, Thomas Aaron
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Basel MDPI AG 01.03.2024
Schlagworte:
amplify and forward (AF)
Antennas
capacity, downlink, full-duplex (FD)
Codes
Communications systems
Downlinking
Iterative algorithms
Iterative methods
loop interference (LI)
MIMO
Optimization
Relay
transceiver
ISSN:2673-4001, 2673-4001
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Zusammenfassung:This paper considers the transceiver design in a multiuser multiple-input multiple-output (MIMO) full-duplex (FD) amplify-and-forward (AF) relay downlink communication system, where users simultaneously transmit data via an FD relay node. The design incorporates an imperfect loop interference (LI) cancellation which results in a residual LI. Linear precoders are employed at the sources and relay, and minimum mean-squared-error (MMSE) combiners are employed at the destinations to mitigate the effect of the residual LI. The corresponding design problem is highly nonconvex, so a closed-form solution is intractable. Thus, an iterative method is developed to solve this optimization problem. Simulation results are presented which show that the proposed iterative algorithm provides better performance than the corresponding half-duplex (HD) solution in terms of the achievable rate under residual LI.
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:2673-4001
2673-4001
DOI:10.3390/telecom5010011