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Relaying systems with reciprocity mismatch : impact analysis and calibration

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Nie, Rongjiang, Chen, Li, Zhao, Nan, Chen, Yunfei, Yu, F. Richard and Wei, Guo (2020) Relaying systems with reciprocity mismatch : impact analysis and calibration. IEEE Transactions on Communications . p. 1. doi:10.1109/TCOMM.2020.2982632 (In Press)

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Official URL: http://dx.doi.org/10.1109/TCOMM.2020.2982632

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Abstract

Cooperative beamforming can provide significant performance improvement for relaying systems with the help of the channel state information (CSI). In time-division duplexing (TDD) mode, the estimated CSI will deteriorate due to the reciprocity mismatch. In this work, we examine the impact and the calibration of the reciprocity mismatch in relaying systems. To evaluate the impact of the reciprocity mismatch for all devices, the closed-form expression of the achievable rate is first derived. Then, we analyze the performance loss caused by the reciprocity mismatch at sources, relays, and destinations respectively to show that the mismatch at relays dominates the impact. To compensate the performance loss, a two-stage calibration scheme is proposed for relays. Specifically, relays perform the intra-calibration based on circuits independently. Further, the inter-calibration based on the discrete Fourier transform (DFT) codebook is operated to improve the calibration performance by cooperation transmission, which has never been considered in previous work. Finally, we derive the achievable rate after relays perform the proposed reciprocity calibration scheme and investigate the impact of estimation errors on the system performance. Simulation results are presented to verify the analytical results and to show the performance of the proposed calibration approach.

Item Type: Journal Article
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Beamforming, Signal processing, MIMO systems, Wireless communication systems
Journal or Publication Title: IEEE Transactions on Communications
Publisher: IEEE
ISSN: 0090-6778
Official Date: 23 March 2020
Dates:
DateEvent
23 March 2020Available
15 March 2020Accepted
Date of first compliant deposit: 8 April 2020
Page Range: p. 1
DOI: 10.1109/TCOMM.2020.2982632
Status: Peer Reviewed
Publication Status: In Press
Publisher Statement: © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, 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 component of this work in other works.
Access rights to Published version: Restricted or Subscription Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
2018YFB180110National Basic Research Program of China (973 Program)http://dx.doi.org/10.13039/501100012166
YD3500002001USTC Center for Micro- and Nanoscale Research and Fabricationhttp://dx.doi.org/10.13039/501100012333
DAWN4IoE 778305Horizon 2020 Framework Programmehttp://dx.doi.org/10.13039/100010661

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