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PREPARED FOR IEEE TRANSACTIONS ON COMMUNICATIONS 1 A Unified Approach to the Performance
 

Summary: PREPARED FOR IEEE TRANSACTIONS ON COMMUNICATIONS 1
A Unified Approach to the Performance
Analysis of Speed Estimation Techniques in
Mobile Communication
Ali Abdi, Senior Member, IEEE, Hong Zhang, Member, IEEE and Cihan
Tepedelenlioglu, Member, IEEE
Abstract
Estimation of the mobile speed, or equivalently, the maximum Doppler frequency, is of importance
in a variety of applications in wireless mobile communications. In this paper, a unified framework for
the performance analysis of several major speed estimation techniques is presented, which allows a fair
comparison between all the methods, analytically. Interestingly, it is proved that all these methods are
equivalent, asymptotically, i.e., for large observation intervals. In addition, we have derived closed-from
expressions for the bias and variance of a recently proposed covariance-based method. We have also
introduced a new estimator which relies on the average number of maxima of the inphase component,
and have calculated its variance, analytically. Our extensive performance analysis, supported by Monte
Carlo simulations, have revealed that depending on the channel condition and the observation interval,
one needs to use a crossing- or a covariance-based technique, to achieve the desired estimation accuracy
over a large range of mobile speeds.
Index Terms
This work was presented in part at IEEE Vehicular Technology Conference, Orlando, FL, 2003.

  

Source: Abdi, Ali - Department of Electrical and Computer Engineering, New Jersey Institute of Technology

 

Collections: Engineering