Beamforming for dual-hop MIMO AF relay networks with channel estimation error and feedback delay

Li, Min, Bai, Lin, Yu, Quan and Choi, Jinho 2017, Beamforming for dual-hop MIMO AF relay networks with channel estimation error and feedback delay, IEEE access, vol. 5, pp. 21840-21851, doi: 10.1109/ACCESS.2017.2760926.

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Title Beamforming for dual-hop MIMO AF relay networks with channel estimation error and feedback delay
Author(s) Li, Min
Bai, Lin
Yu, Quan
Choi, JinhoORCID iD for Choi, Jinho orcid.org/0000-0002-4895-6680
Journal name IEEE access
Volume number 5
Start page 21840
End page 21851
Total pages 12
Publisher Institute of Electrical and Electronics Engineers
Place of publication Piscataway, N.J.
Publication date 2017
ISSN 2169-3536
Keyword(s) Multiple-input multiple-output
beamforming
amplify-and-forward
channel state information
average symbol error rate
Science & Technology
Technology
Computer Science, Information Systems
Engineering, Electrical & Electronic
Telecommunications
Computer Science
Engineering
Summary This paper concerns the beamforming (BF) design for a dual-hop multiple-input multiple-output (MIMO) amplify-and-forward (AF) relay network. Both a general antenna configuration and imperfect channel state information are taking into consideration, where multiple antennas are deployed at the source, relay, and destination, channel impairments exist at the source-relay and relay-destination hops. The BF scheme is optimized to maximize the received signal-to-noise ratio (SNR). In order to evaluate the performance of the relay network, asymptotic average symbol error rate (ASER) at high SNR is derived. Computer simulations are conducted to show the superiority of the designed BF scheme and the impacts of channel impairments and antenna configurations on the performance of the MIMO AF relay systems. It is shown that the diversity order of the relay network can be reduced to one due to the channel impairments.
Language eng
DOI 10.1109/ACCESS.2017.2760926
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2017, IEEE
Persistent URL http://hdl.handle.net/10536/DRO/DU:30118629

Document type: Journal Article
Collection: School of Information Technology
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