Performance analysis of the nonlinear self-interference cancellation for full-duplex communications

In this paper, the spectral efficiency of a full-duplex densely distributed multi-input multi-output (MIMO) system with wireless backhaul is considered. In-band full-duplex (IBFD) backhauling, in which the backhaul and access transmission take place on the same spectrum, is exploited for wireless backhauling to enable efficient spectrum reuse. However, the severe cross-tier interference and cross link interference (CLI) reduce the gains of IBFD backhauling. To evaluate the achievable spectral efficiency with imperfect channel state information (CSI), we propose a two-phase channel estimation scheme to estimate CSI for two wireless links, and the scheme estimates effective interference CSI between APs based on beamforming training to perform interference cancellation at access points (APs). Given the estimated CSI, the closed-form expressions of the uplink and downlink achievable rates respectively with maximum ratio transmission (MRT) beamforming and maximum ratio combining (MRC) receivers are derived with Gamma approximation. Numerical results verify the accuracy of the derived closed-form expressions and the effectiveness of two-phase channel estimation scheme for interference cancellation. Besides, compared with half-duplex densely distributed MIMO systems, full-duplex systems with interference cancellation provide better performance.

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Performance analysis of full-duplex densely distributed MIMO with wireless backhaul

Wan

Pan

et al. 2023

Sci. China Inf. Sci.

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In-Band Full-Duplex Communications in ATSC 3.0 Single Frequency Network

Hong

Zhang

et al. 2023

IEEE Trans. on Broadcast.

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Performance analysis of the nonlinear self-interference cancellation for full-duplex communications

Cited by 2 publications

References 25 publications

Performance analysis of full-duplex densely distributed MIMO with wireless backhaul

Performance analysis of full-duplex densely distributed MIMO with wireless backhaul

In-Band Full-Duplex Communications in ATSC 3.0 Single Frequency Network

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