Performance Analysis of a Full-Duplex MIMO Decode-and-Forward Relay System With Self-Energy Recycling

This paper analyzes the performance of the full-duplex (FD) multiple-input-multiple-output (MIMO) decode-and-forward (DF) relay system in the presence of self-energy recycling (S-ER). Specifically, this work proposes an antenna allocation scheme for S-ER as well as analytically evaluates the perform...

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Bibliographic Details
Published in:IEEE access 2020, Vol.8, p.226248-226266
Main Authors: Shaikh, Mohd Hamza Naim, Bohara, Vivek Ashok, Srivastava, Anand
Format: Article
Language:English
Subjects:
antenna allocation
Antenna arrays
Antennas
decode-and-forward relaying
Degradation
Energy efficiency
Energy harvesting
full-duplex
MIMO (control systems)
MIMO communication
multiple-input multiple-output
Orthogonal Frequency Division Multiplexing
outage
Performance evaluation
Recycling
Relay systems
Relays
Resource management
self-energy recycling
self-interference
Simulation
spectral efficiency
symbol error rate
transmit antenna selection
Transmitting antennas
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Summary:This paper analyzes the performance of the full-duplex (FD) multiple-input-multiple-output (MIMO) decode-and-forward (DF) relay system in the presence of self-energy recycling (S-ER). Specifically, this work proposes an antenna allocation scheme for S-ER as well as analytically evaluates the performance of this proposed scheme in terms of spectral efficiency (SE), energy efficiency (EE), outage and symbol error rate (SER). Since, the self-interference (SI) is a major bottleneck in achieving the true potentials of FD communication, this work considers SI as an energy harvesting opportunity to enhance the EE of the system. The proposed analysis shows that reserving few antennas for S-ER at the FD-MIMO relay improves the EE, however, it reduces the antenna array gain at the relay for information transmission and reception. Thus, a slight degradation in the SE, outage and SER is observed. Further, an adaptive S-ER technique has been proposed which utilizes the antennas corresponding to the least channel gain with respect to information transmission and reception for S-ER. This adaptive S-ER technique improves the EE and also compensates for the slight degradation in the SE, outage and SER through adaptive antenna allocation. Closed-form expressions for the SE, EE, outage and symbol error rate have been derived for these S-ER techniques. In the end, simulations results are provided to validate the efficacy of the theoretical derivations.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2020.3045804