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Novel Scheme for Spatial Extrapolation of Michael I. Y. Williams, Glenn Dickins, Rodney A. Kennedy, Tony S. Pollock and Thushara D. Abhayapala
 

Summary: Novel Scheme for Spatial Extrapolation of
Multipath
Michael I. Y. Williams, Glenn Dickins, Rodney A. Kennedy, Tony S. Pollock and Thushara D. Abhayapala
Abstract--It has been shown that the effects of multipath prop-
agation in a mobile wireless communications system can be miti-
gated if the receiver can make predictions about the multipath fad-
ing. In this paper, we introduce a novel scheme for extrapolating
multipath fields outwards in space, given field observations within
a limited region. Whereas previous work has concentrated on sim-
ple multipath propagation with a finite number of plane wave scat-
terers, we use a less restrictive continuous model of scattering. The
extrapolation scheme is based on a information-weighted modal
expansion of the field, where modes containing too little informa-
tion are penalized to minimize the extrapolation error. The per-
formance of this scheme is shown to be far better than pessimistic
error bounds derived in previous work.
I. INTRODUCTION
Multipath fading is a major factor limiting the performance
of wireless communications systems. Although progress has
been made in exploiting the properties of multipath fields us-

  

Source: Abhayapala, Thushara D. - Department of Information Engineering, Australian National University

 

Collections: Computer Technologies and Information Sciences