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Robust design for massive CSI acquisition in analog function computation networks
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Ang, Fan, Chen, Li, Zhao, Nan, Chen, Yunfei and Yu, F. Richard (2019) Robust design for massive CSI acquisition in analog function computation networks. IEEE Transactions on Vehicular Technology . (In Press)
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WRAP-robust-design-massive-acquisition-analog-computation-Chen-2019.pdf - Accepted Version - Requires a PDF viewer. Download (3190Kb) | Preview |
Abstract
Analog function computation utilizes the superposition property of multi-access channel (MAC) to compute the target function in an efficient way. However, its corresponding transceiver requires global channel state information (CSI) of the network, which incurs large latency. To tackle this challenge, a novel scheme called over-the-air signaling procedure is proposed by exploiting a defined effective CSI in this paper. We first derive the training complexity of the proposed scheme and compare it with the conventional design. It is shown that the training complexity of the proposed scheme can be greatly reduced for massive CSI acquisition by avoiding collecting individual CSI. To account for the difference of the desired CSI, a corresponding robust model is further discussed. Through modeling the channel uncertainties under the expectation-based model and the worst- case model, we formulate the transceiver optimization for both the conventional scheme and the over-the-air signaling procedure. The computational time complexity is derived as a polynomial expression, and it can be significantly reduced for the over-the- air signaling procedure due to its independence of the number of nodes. Finally, the mean-square error (MSE) improvement and complexity reduction of the proposed design are demonstrated via simulation.
| 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): | Multiple access protocols (Computer network protocols), Radio -- Transmitter-receivers | |||||||||||||||
| Journal or Publication Title: | IEEE Transactions on Vehicular Technology | |||||||||||||||
| Publisher: | IEEE | |||||||||||||||
| ISSN: | 0018-9545 | |||||||||||||||
| Official Date: | 6 January 2019 | |||||||||||||||
| Dates: |
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| Date of first compliant deposit: | 7 January 2019 | |||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||
| Publication Status: | In Press | |||||||||||||||
| Publisher Statement: | © 2019 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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