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Dependence of MIMO System Performance on the Joint Properties of Angular Power

Summary: Dependence of MIMO System Performance on the
Joint Properties of Angular Power
Terence Betlehem, Tharaka A. Lamahewa
and Thushara D. Abhayapala
Research School of Information Science and Engineering, Australian National University, Australia
Wireless Signal Processing Program, National ICT Australia Ltd.
Canberra, Australia
Abstract-- In this paper, we use a novel MIMO channel model
to characterize the dependence of ergodic capacity and diversity
order on the joint statistics of the angular power density. The
scattering environment of a MIMO channel is characterized by
a double directional angular power distribution, describing the
power transferred in each direction from transmitter aperture
to receiver aperture. Angular power, which is typically separable
Kronecker-modelled, is here generalized to include joint distri-
bution properties using well-known bivariate probability density
functions. We show that the joint properties of the power density,
namely the shape and the orientation of power distribution
contours, have significant impact on capacity and diversity of


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


Collections: Computer Technologies and Information Sciences