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research article

Over-the-Air Federated Learning via Second-Order Optimization

Yang, Peng
•
Jiang, Yuning  
•
Wang, Ting
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December 1, 2022
Ieee Transactions On Wireless Communications

Federated learning (FL) is a promising learning paradigm that can tackle the increasingly prominent isolated data islands problem while keeping users' data locally with privacy and security guarantees. However, FL could result in task-oriented data traffic flows over wireless networks with limited radio resources. To design communication-efficient FL, most of the existing studies employ the first-order federated optimization approach that has a slow convergence rate. This however results in excessive communication rounds for local model updates between the edge devices and edge server. To address this issue, in this paper, we instead propose a novel over-the-air second-order federated optimization algorithm to simultaneously reduce the communication rounds and enable low-latency global model aggregation. This is achieved by exploiting the waveform superposition property of a multi-access channel to implement the distributed second-order optimization algorithm over wireless networks. The convergence behavior of the proposed algorithm is further characterized, which reveals a linear-quadratic convergence rate with an accumulative error term in each iteration. We thus propose a system optimization approach to minimize the accumulated error gap by joint device selection and beamforming design. Numerical results demonstrate the system and communication efficiency compared with the state-of-the-art approaches.

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Type
research article
DOI
10.1109/TWC.2022.3185156
Web of Science ID

WOS:000913795700032

Author(s)
Yang, Peng
Jiang, Yuning  
Wang, Ting
Zhou, Yong
Shi, Yuanming
Jones, Colin N.  
Date Issued

2022-12-01

Published in
Ieee Transactions On Wireless Communications
Volume

21

Issue

12

Start page

10560

End page

10575

Subjects

Engineering, Electrical & Electronic

•

Telecommunications

•

Engineering

•

Telecommunications

•

federated learning

•

over-the-air computation

•

second-order optimization method

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computation

•

privacy

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LA3  
Available on Infoscience
February 27, 2023
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/195203
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