Beamforming Based Full-Duplex for Millimeter-Wave Communication
AbstractIn this paper, we study beamforming based full-duplex (FD) systems in millimeter-wave (mmWave) communications. A joint transmission and reception (Tx/Rx) beamforming problem is formulated to maximize the achievable rate by mitigating self-interference (SI). Since the optimal solution is difficult to find due to the non-convexity of the objective function, suboptimal schemes are proposed in this paper. A low-complexity algorithm, which iteratively maximizes signal power while suppressing SI, is proposed and its convergence is proven. Moreover, two closed-form solutions, which do not require iterations, are also derived under minimum-mean-square-error (MMSE), zero-forcing (ZF), and maximum-ratio transmission (MRT) criteria. Performance evaluations show that the proposed iterative scheme converges fast (within only two iterations on average) and approaches an upper-bound performance, while the two closed-form solutions also achieve appealing performances, although there are noticeable differences from the upper bound depending on channel conditions. Interestingly, these three schemes show different robustness against the geometry of Tx/Rx antenna arrays and channel estimation errors. View Full-Text
Share & Cite This Article
Liu, X.; Xiao, Z.; Bai, L.; Choi, J.; Xia, P.; Xia, X.-G. Beamforming Based Full-Duplex for Millimeter-Wave Communication. Sensors 2016, 16, 1130.
Liu X, Xiao Z, Bai L, Choi J, Xia P, Xia X-G. Beamforming Based Full-Duplex for Millimeter-Wave Communication. Sensors. 2016; 16(7):1130.Chicago/Turabian Style
Liu, Xiao; Xiao, Zhenyu; Bai, Lin; Choi, Jinho; Xia, Pengfei; Xia, Xiang-Gen. 2016. "Beamforming Based Full-Duplex for Millimeter-Wave Communication." Sensors 16, no. 7: 1130.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.