Low-complexity channel tracking in fast-varying MIMO environments

Ruoxu Wang, Wei Peng, Tao Jiang, Fumiyuki Adachi

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

Abstract

In this paper, channel tracking in fast-varying MIMO environments is considered. Firstly, the high-dimension channel vector of each user is decomposed into a semi-static factor load matrix (FLM) and a low-dimension factor coefficient vector (FCV). Thereby, channel tracking is replaced by the infrequent FLM tracking and low-complexity FCV tracking. Secondly, channel variations are represented by local polynomial modeling, based on which a recursive least square (RLS) algorithm with optimal forgetting factor (FF) is proposed. It is verified that the proposed algorithm has higher accuracy, better tracking ability and lower computational complexity than the existing methods.

Original languageEnglish
Title of host publication2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1339-1343
Number of pages5
ISBN (Electronic)9781538677476
DOIs
Publication statusPublished - 2019 Jun
Event15th IEEE International Wireless Communications and Mobile Computing Conference, IWCMC 2019 - Tangier, Morocco
Duration: 2019 Jun 242019 Jun 28

Publication series

Name2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019

Conference

Conference15th IEEE International Wireless Communications and Mobile Computing Conference, IWCMC 2019
CountryMorocco
CityTangier
Period19/6/2419/6/28

Keywords

  • Channel tracking
  • Fast-varying
  • Low-complexity
  • MIMO
  • Optimal forgetting factor
  • Recursive least square

ASJC Scopus subject areas

  • Hardware and Architecture
  • Computer Networks and Communications
  • Safety, Risk, Reliability and Quality

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  • Cite this

    Wang, R., Peng, W., Jiang, T., & Adachi, F. (2019). Low-complexity channel tracking in fast-varying MIMO environments. In 2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019 (pp. 1339-1343). [8766471] (2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IWCMC.2019.8766471