Is Self-Interference in Full-Duplex Communications a Foe or a Friend?
Abstract
This paper studies the potential of harvesting energy from the self-interference of a full-duplex base station. The base station is equipped with a self-interference cancellation switch, which is turned-off for a fraction of the transmission period for harvesting the energy from the self-interference that arises due to the downlink transmission. For the remaining transmission period, the switch is on such that the uplink transmission takes place simultaneously with the downlink transmission. A novel energy-efficiency maximization problem is formulated for the joint design of downlink beamformers, uplink power allocations and transmission time-splitting factor. The optimization problem is nonconvex, and hence, a rapidly converging iterative algorithm is proposed by employing the successive convex approximation approach. Numerical simulation results show significant improvement in the energy-efficiency by allowing self-energy recycling.
Keywords
Cite
@article{arxiv.1802.00866,
title = {Is Self-Interference in Full-Duplex Communications a Foe or a Friend?},
author = {Animesh Yadav and Octavia A. Dobre and H. Vincent Poor},
journal= {arXiv preprint arXiv:1802.00866},
year = {2018}
}
Comments
Accepted for publication in IEEE Signal Processing Letters