Low-Complexity Channel Estimation and Detection for MIMO-OFDM Receiver with ESPAR Antenna

DIego Javier Reinoso Chisaguano, Yafei Hou, Takeshi Higashino, Minoru Okada

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Multiple-input-multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) receivers with an electronically steerable passive array radiator (ESPAR) antenna can improve bit error rate (BER) performance and obtain additional diversity gain without increasing the number of radio-frequency (RF) front-end circuits. In this scheme, a minimum-mean-square-error (MMSE) channel estimator is employed for obtaining the channel state information. However, its drawbacks include insufficient estimation accuracy and high computational complexity due to the inverse matrix calculation. In this paper, we propose using a low-complexity compressed-sensing-based channel estimation for the MIMO-OFDM receiver with an ESPAR antenna. We also propose a low-complexity detection scheme to further reduce the computational cost required for the detection. The simulation results show that with using the proposed channel estimation method, the BER performance is improved, while its complexity is reduced. The simulations also show that the proposed detection scheme successfully reduces the required computational cost while minimizing the degradation in the BER.

Original languageEnglish
Pages (from-to)8297-8308
Number of pages12
JournalIEEE Transactions on Vehicular Technology
Volume65
Issue number10
DOIs
Publication statusPublished - Oct 2016
Externally publishedYes

Keywords

  • Channel estimation
  • compressed sensing (CS)
  • electronically steerable passive array radiator (ESPAR)
  • multiple-input-multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM)

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics

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