On velocity estimation and correlation properties of narrow-band mobile communication channels

Cihan Tepedelenlioǧlu, Georgios B. Giannakis

Research output: Contribution to journalArticlepeer-review

136 Scopus citations

Abstract

Estimation of the maximum Doppler spread or, equivalently, the vehicle velocity, is useful in improving handoff algorithms and necessary for the optimal tuning of parameters for systems that adapt to changing channel conditions. We provide a novel velocity estimator based on the spectral moments of the in-phase and the quadrature phase components or the envelope of the received signal. We characterize the joint effects of the Ricean K factor, the directivity and the angle of nonisotropic scattering, and the effects of additive white noise on our estimator and other covariance-based velocity estimators analytically. We also prove the mean-square consistency of the covariance-based velocity estimators under some assumptions on the angle of arrival distribution. Simulations illustrate our approach and compare with existing techniques.

Original languageEnglish (US)
Pages (from-to)1039-1052
Number of pages14
JournalIEEE Transactions on Vehicular Technology
Volume50
Issue number4
DOIs
StatePublished - Jul 2001
Externally publishedYes

Keywords

  • Fading channel models
  • Velocity estimation

ASJC Scopus subject areas

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

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