Doppler spread estimation in mobile communication systems

Young-Chai Ko, Gibong Jeong

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

12 Citations (Scopus)

Abstract

A new technique based on the auto-correlation function is described for the estimation of the Doppler spread in mobile communication systems. We first propose to divide a uncertainty region of Doppler spread into multiple frequency bins. Based on the given multiple bins the correlator compares the estimated value at a certain time index to the theoretical exact value and then decides which bin the Doppler spread is estimated in. The certain time index can be optimized to give the largest decision region among multiple bins. We derive the optimum time index algorithm to give the largest decision region for each bin based on Rayleigh fading channel. We also apply the same Doppler spread estimator to the Rician case with the slight transformation of the received signal. We show that the proposed technique is not affected significantly by the Rician factor and the SNR degradation with the reasonable number of samples for estimation which is not the case of other estimators given in the literature.

Original languageEnglish
Title of host publicationIEEE Vehicular Technology Conference
Pages1941-1945
Number of pages5
Volume4
Publication statusPublished - 2002
Externally publishedYes
Event55th Vehicular Technology Conference - Birmingham, AL, United States
Duration: 2002 May 62002 May 9

Other

Other55th Vehicular Technology Conference
CountryUnited States
CityBirmingham, AL
Period02/5/602/5/9

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Ko, Y-C., & Jeong, G. (2002). Doppler spread estimation in mobile communication systems. In IEEE Vehicular Technology Conference (Vol. 4, pp. 1941-1945)