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Article

Impacts of Imperfect Channel State Information, Transceiver Hardware, and Self-Interference Cancellation on the Performance of Full-Duplex MIMO Relay System

1
Telecommunications University, Nha Trang 650000, Vietnam
2
Le Quy Don Technical University, Ha Noi 100000, Vietnam
3
Division of Computational Physics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
4
Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
*
Author to whom correspondence should be addressed.
Current Address: Institute for Computational Science, Ton Duc Thang University, No. 19 Nguyen Huu Tho Street, Tan Phong Ward, District 7, Ho Chi Minh City 700000, Vietnam.
Sensors 2020, 20(6), 1671; https://doi.org/10.3390/s20061671
Received: 19 January 2020 / Revised: 5 March 2020 / Accepted: 10 March 2020 / Published: 17 March 2020
Imperfect channel state information (I-CSI) and imperfect transceiver hardware often happen in wireless communication systems due to the time-varying and random characteristics of both wireless channels and hardware components. The impacts of I-CSI and hardware impairments (HI) reduce not only the system performance but also the self-interference cancellation (SIC) capability of full-duplex (FD) devices. To investigate the system performance in realistic scenarios, in this paper, we consider the performance of an FD multiple-input multiple-output (MIMO) relay system under the effects of I-CSI, imperfect SIC (I-SIC), and imperfect transceiver hardware. We mathematically derive the exact closed-form expressions of the outage probability (OP) and ergodic capacity of the considered HI-FD-MIMO relay system over Rayleigh fading channels with the existence of I-CSI, I-SIC, and HI. Numerical results indicate that the performance in terms of OP and capacity reaches saturation faster, especially when the channel estimation error, the residual self-interference (RSI), and HI levels are remarkable. Therefore, various solutions for effectively reducing the channel estimation error, RSI, and HI levels in the HI-FD-MIMO relay system should be carried out to improve the system performance. All derived mathematical expressions are verified through Monte-Carlo simulations. View Full-Text
Keywords: hardware impairments; full-duplex; multiple-input multiple-output; channel state information; outage probability; ergodic capacity hardware impairments; full-duplex; multiple-input multiple-output; channel state information; outage probability; ergodic capacity
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MDPI and ACS Style

Nguyen, B.C.; Thang, N.N.; Tran, X.N.; Dung, L.T. Impacts of Imperfect Channel State Information, Transceiver Hardware, and Self-Interference Cancellation on the Performance of Full-Duplex MIMO Relay System. Sensors 2020, 20, 1671. https://doi.org/10.3390/s20061671

AMA Style

Nguyen BC, Thang NN, Tran XN, Dung LT. Impacts of Imperfect Channel State Information, Transceiver Hardware, and Self-Interference Cancellation on the Performance of Full-Duplex MIMO Relay System. Sensors. 2020; 20(6):1671. https://doi.org/10.3390/s20061671

Chicago/Turabian Style

Nguyen, Ba C., Nguyen N. Thang, Xuan N. Tran, and Le T. Dung 2020. "Impacts of Imperfect Channel State Information, Transceiver Hardware, and Self-Interference Cancellation on the Performance of Full-Duplex MIMO Relay System" Sensors 20, no. 6: 1671. https://doi.org/10.3390/s20061671

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