Wei, Z, Sun, S, Zhu, X ORCID: 0000-0002-7371-4595, Huang, Y ORCID: 0000-0001-7774-1024 and Wang, J
(2018)
Energy-Efficient Hybrid Duplexing Strategy for Bi-Directional Distributed Antenna Systems.
IEEE Transactions on Vehicular Technology, 67 (6).
pp. 5096-5110.
Text
Author_accepted_DA_system_hybrid_duplex_TVT2018.pdf - Author Accepted Manuscript Download (955kB) |
Abstract
IEEE We propose a bi-directional distributed antenna (DA) system where DAs are capable of working dynamically in hybrid duplex modes: full duplex (FD), half duplex (HD) and sleep, which enables higher degree of freedom and hence much higher energy efficiency (EE) than DA sole-FD systems, with just marginal loss in spectral efficiency (SE). The proposed system also demonstrates significant EE and SE enhancement over FD co-located antenna systems. Compared to the above two benchmark systems, the proposed system also requires much simpler self-interference cancellation (SIC) design for FD mode due to less cross talks between antennas. A low-complexity EE maximization scheme is proposed for the bi-directional DA system. A channel gain based DA clustering algorithm is first performed to activate/deactivate transmit/receive chains, which highlights the characteristics of DA deployment, and then a distributed hybrid duplexing (Dis-Hyb-Duplexing) algorithm is performed to optimize the downlink beamformer and the uplink transmission power. Various practical aspects are taken into account for system design, such as self-interference at DAs in FD mode, co-channel interference from uplink users to downlink users, and multiuser interference in both uplink and downlink. The effectiveness of the proposed system is verified by simulation results.
Item Type: | Article |
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Uncontrolled Keywords: | Hybrid duplexing, full duplex, half duplex, distributed antennas, energy efficiency |
Depositing User: | Symplectic Admin |
Date Deposited: | 06 Jun 2018 10:55 |
Last Modified: | 19 Jan 2023 01:32 |
DOI: | 10.1109/TVT.2018.2814047 |
Related URLs: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/3022200 |