Research Article
Joint Mode Selection and Beamformer Optimization for Full-Duplex Cellular Systems
@INPROCEEDINGS{10.1007/978-3-319-73447-7_28, author={Fangni Chen and Jingyu Hua and Weidang Lu and Zhongpeng Wang}, title={Joint Mode Selection and Beamformer Optimization for Full-Duplex Cellular Systems}, proceedings={Machine Learning and Intelligent Communications. Second International Conference, MLICOM 2017, Weihai, China, August 5-6, 2017, Proceedings, Part II}, proceedings_a={MLICOM}, year={2018}, month={2}, keywords={Full-duplex Cellular system Self-interference Mode selection WSR}, doi={10.1007/978-3-319-73447-7_28} }- Fangni Chen
Jingyu Hua
Weidang Lu
Zhongpeng Wang
Year: 2018
Joint Mode Selection and Beamformer Optimization for Full-Duplex Cellular Systems
MLICOM
Springer
DOI: 10.1007/978-3-319-73447-7_28
Abstract
We investigate a novel mode selection scheme for full-duplex (FD) cellular system where the base station (BS) and the user equipments (UEs) are equipped with multiple-input multiple-output (MIMO) antennas. We consider that FD is utilized at the BS, i.e. it enables simultaneous transmission and reception at the same frequency band, while UEs work in the conventional half-duplex (HD) way. Since FD system can not always outperform HD system due to residual self interference (RSI) at the base station, the mode selection is mainly determined by system performance. To address this issue, a joint mode selection and beamformer optimization problem with power constraints is formulated to achieve the maximal weighted sum rate (WSR). On account of the non-convex of original problem, a heuristic algorithm based on decoupling is proposed, which decomposes the original problem into two sub-problems. One is mode selection sub-problem and the other one is mean square error (MSE) minimization sub-problem. By means of simulation, the proposed algorithm shows the ability to choose the mode with greater performance in achievable rate.