Jointly optimized echo state network for short-term channel state information prediction of fading channel

Qiwu Luo, Jian Zhou, Yichuang Sun, Oluyomi Simpson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

Accurately obtaining channel state information (CSI) in wireless systems is significant but challenging. This paper focuses the technique of machine-learning-based channel estimation. In particular, a jointly optimized echo state network (JOESN) is proposed to form a concept of the CSI prediction which is made up of two interacting aspects of output weight regularization and initial parameter optimization. First, in order to enhance noise robustness, a sparse regression based on L2 regularization is employed to finely learn the output weights of ESN. Second, vital reservoir parameters (i.e., global scaling factor, reservoir size, scaling coefficient and sparsity degree) are learned by a linear-weighted particle swarm optimization (LWPSO) for further improve the prediction accuracy and reliability. The experiments about computational complexity and three evaluating metrics are carried out on two chaotic benchmarks and one real-world dataset. The analyzed results indicate that the JOESN performs promisingly on multivariate chaotic time series prediction.
Original languageEnglish
Title of host publication2020 International Wireless Communications and Mobile Computing, IWCMC 2020
Pages1480-1484
Number of pages5
ISBN (Electronic)9781728131290
DOIs
Publication statusPublished - 27 Jul 2020
EventInternational conference on Wireless Communications & Mobile Computing - Limassol, Cyprus
Duration: 15 Jun 202019 Jun 2020
https://iwcmc.org/2020/

Publication series

Name2020 International Wireless Communications and Mobile Computing, IWCMC 2020

Conference

ConferenceInternational conference on Wireless Communications & Mobile Computing
Abbreviated titleIWCMC 2020
Country/TerritoryCyprus
CityLimassol
Period15/06/2019/06/20
Internet address

Keywords

  • Wireless communications
  • channel state information (CSI)
  • channel estimation
  • fading channel
  • reservoir computing

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