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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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WRAP-Relaying-systems-reciprocity-mismatch-Chen-2020.pdf - Accepted Version - Requires a PDF viewer. Download (995Kb) | Preview |
Official URL: http://dx.doi.org/10.1109/TCOMM.2020.2982632
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 | ||||||||||||
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| 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: |
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| 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: |
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