Performance analysis of velocity (Doppler) estimators in mobile communications

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

14 Scopus citations

Abstract

The knowledge of the maximum Doppler spread, or equivalently the vehicle velocity is of paramount importance in such diverse applications as adaptive modulation and hand-off. In this paper we derive the Cramer-Rao bound for all Doppler estimators that utilize the I/Q components of the channel coefficients, which is also shown to be a bound for all estimators that utilize the envelope or the logarithm of the envelope. Furthermore, by exploiting the method of stationary phase, we show that the sample covariances of the small scale fading converge at a rate of O(log(N)/N), regardless of the angle of arrival distribution. This is used to conclude that the covariance-based estimators in the literature converge to their true values at that same rate. We compare the CRB with the variance of covariance-based Doppler estimators by Monte Carlo simulation.

Original languageEnglish (US)
Title of host publicationICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume3
Publication statusPublished - 2002
Event2002 IEEE International Conference on Acoustic, Speech, and Signal Processing - Orlando, FL, United States
Duration: May 13 2002May 17 2002

Other

Other2002 IEEE International Conference on Acoustic, Speech, and Signal Processing
CountryUnited States
CityOrlando, FL
Period5/13/025/17/02

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Signal Processing
  • Acoustics and Ultrasonics

Cite this

Tepedelenlioglu, C. (2002). Performance analysis of velocity (Doppler) estimators in mobile communications. In ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings (Vol. 3)