Summary: Wireless Pers Commun
DOI 10.1007/s11277-007-9281-4
Spatial precoder design for space­time coded MIMO systems:
based on fixed parameters of MIMO channels
Tharaka A. Lamahewa · Rodney A. Kennedy ·
Thushara D. Abhayapala · Van K. Nguyen
Received: 30 April 2006 / Accepted: 15 February 2007
© Springer Science+Business Media B.V. 2007
Abstract In realistic channel environments the per-
formance of space­time coded multiple-input multiple
output (MIMO) systems is significantly reduced due to
non-ideal antenna placement and non-isotropic scatter-
ing. In this paper, by exploiting the spatial dimension of
a MIMO channel we introduce the novel idea of linear
spatialprecoding(orpower-loading)basedonfixedand
known parameters of MIMO channels to ameliorate the
effects of non-ideal antenna placement on the perfor-
mance of coherent (channel is known at the receiver)
and non-coherent (channel is un-known at the receiver)
space­time codes. Antenna spacing and antenna place-

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

Collections: Computer Technologies and Information Sciences