A Compressive Sensing Approach for Federated Learning over Massive MIMO Communication Systems

Yo Seb Jeon, Mohammad Mohammadi Amiri, Jun Li, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

Abstract

Federated learning is a privacy-preserving approach to train a global model at a central server by collaborating with wireless devices, each with its own local training data set. In this paper, we present a compressive sensing approach for federated learning over massive multiple-input multiple-output communication systems in which the central server equipped with a massive antenna array communicates with the wireless devices. One major challenge in system design is to reconstruct local gradient vectors accurately at the central server, which are computed-and-sent from the wireless devices. To overcome this challenge, we first establish a transmission strategy to construct sparse transmitted signals from the local gradient vectors at the devices. We then propose a compressive sensing algorithm enabling the server to iteratively find the linear minimum-mean-square-error (LMMSE) estimate of the transmitted signal by exploiting its sparsity. We also derive an analytical threshold for the residual error at each iteration, to design the stopping criterion of the proposed algorithm. We show that for a sparse transmitted signal, the proposed algorithm requires less computationally complexity than LMMSE. Simulation results demonstrate that the presented approach outperforms conventional linear beamforming approaches and reduces the performance gap between federated learning and centralized learning with perfect reconstruction.

Original languageEnglish (US)
Article number9269459
Pages (from-to)1990-2004
Number of pages15
JournalIEEE Transactions on Wireless Communications
Volume20
Issue number3
DOIs
StatePublished - Mar 2021

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

Keywords

  • Federated learning
  • compressive sensing
  • distributed stochastic gradient descent
  • massive multiple-input multiple-output (MIMO)
  • multi-antenna technique

Fingerprint

Dive into the research topics of 'A Compressive Sensing Approach for Federated Learning over Massive MIMO Communication Systems'. Together they form a unique fingerprint.

Cite this