Tang, M., Vehkapera, M., Chu, X. orcid.org/0000-0003-1863-6149 et al. (1 more author) (2019) LI cancellation and power allocation for multipair FD relay systems with massive antenna arrays. IEEE Wireless Communications Letters, 8 (4). pp. 1077-1081. ISSN 2162-2337
Abstract
Massive antenna arrays are capable of cancelling out the loop interference (LI) at the relay station in multipair full-duplex (FD) relay networks even without LI channel knowledge if the number of antennas is allowed to grow without a bound. For large but finite number of antennas, however, channel estimation based LI cancellation is required. In this paper, we propose a pilot protocol for LI channel estimation by exploiting the channel coherence time difference between static and moving transceivers in a multipair FD relay system. To maximize the end-to-end achievable rate, we also design a novel power allocation scheme to adjust the transmit power of each link at the relay. The analytical and numerical results show that the proposed novel pilot protocol and power allocation scheme jointly improve spectral and energy efficiency significantly with realistic coherence time differences.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | Full-duplex relaying; pilot protocol; power allocation; interference mitigation; hardware impairments |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Funding Information: | Funder Grant number EUROPEAN COMMISSION - HORIZON 2020 734798 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 10 Apr 2019 11:19 |
Last Modified: | 23 Nov 2021 09:52 |
Status: | Published |
Publisher: | IEEE |
Refereed: | Yes |
Identification Number: | 10.1109/lwc.2019.2906888 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:144660 |