Balance of uplink and downlink energy consumption based on geometric weighting. (October 2019)

• Record Type: Journal Article
• Authors: Xu, Peng; Yang, Yanfei; Song, Xin; Liu, Guangli
• Is Part Of: Journal of physics. Volume 1224(2019)
• Publication Date: 2019-10
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1324/1/012025
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: In this paper, we study a full-duplex MIMO single-cell system in which a full-duplex MIMO base station simultaneously exchanges information with multiple single-antenna users. Full-duplex introduces additional self-interference and multi-user interference compared to half-duplex, resulting in conflicting coupling between the uplink and downlink. Therefore, we use the geometric weighted multi-objective method to weigh the uplink and downlink transmit power minimization problem under the minimum rate constraint. By transforming the original non-convex problem into a convex problem, a new weight function is established by means of geometric weighting to balance energy consumption better between the uplink and downlink. Through numerical simulations, it shows that the proposed algorithm shows better energy saving gain than the original method.