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Computation over MAC : achievable function rate maximization in wireless networks
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Chen, L., Zhao, N., Chen, Yunfei, Qin, X. and Yu, R. F. (2020) Computation over MAC : achievable function rate maximization in wireless networks. IEEE Transactions on Communications, 68 (9). pp. 5446-5459. doi:10.1109/TCOMM.2020.3005958
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WRAP-Computation-over-MAC-achievable-function-rate-wireless-networks-Chen-2020.pdf - Accepted Version - Requires a PDF viewer. Download (1178Kb) | Preview |
Official URL: https://doi.org/10.1109/TCOMM.2020.3005958
Abstract
The next generation wireless network is expected to connect billions of nodes, which brings up the bottleneck on the communication speed for distributed data fusion. To overcome this challenge, computation over multiple access channel (CoMAC) was recently developed to compute the desired functions with a summation structure (e.g., mean, norm, etc.) by using the superposition property of wireless channels. This work aims to maximize the achievable function rate of reliable CoMAC in wireless networks. More specifically, considering channel fading and transceiver design, we derive the achievable function rate adopting the quantization and the nested lattice coding, which is determined by the number of nodes, the maximum value of messages and the quantization error threshold. Based on the derived result, the transceiver design is optimized to maximize the achievable function rate of the network. We first study a single cluster network without inter-cluster interference (ICI). Then, a multi-cluster network is further analyzed in which the clusters work in the same channel with ICI. In order to avoid the global channel state information (CSI) aggregation during the optimization, a low-complexity signaling procedure irrelevant with the number of nodes is proposed utilizing the channel reciprocity and the defined effective CSI.
| Item Type: | Journal Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 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) , MIMO systems , Wireless communication systems , Signal theory (Telecommunication) , Radio -- Transmitter-receivers | ||||||||
| Journal or Publication Title: | IEEE Transactions on Communications | ||||||||
| Publisher: | IEEE | ||||||||
| ISSN: | 0090-6778 | ||||||||
| Official Date: | September 2020 | ||||||||
| Dates: |
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| Volume: | 68 | ||||||||
| Number: | 9 | ||||||||
| Page Range: | pp. 5446-5459 | ||||||||
| DOI: | 10.1109/TCOMM.2020.3005958 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| 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 | ||||||||
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