Exact Pairwise Error Probability of Differential Space-Time Codes in Spatially Correlated Channels
Lamahewa, T.A.
Nguyen, V.K.
Abhayapala, T.D.
Department of Information Engineering, The Australian National University, Canberra ACT 0200, Australia. tharaka.lamahewa@anu.edu.au;
This paper appears in: Communications, 2006. ICC '06. IEEE International Conference on
Publication Date: June 2006
Volume: 10,
On page(s): 4853-4858
Location: Istanbul,
ISSN: 8164-9547
ISBN: 1-4244-0355-3
Digital Object Identifier: 10.1109/ICC.2006.255408
Current Version Published: 2006-12-11
Abstract
In this paper, we derive an analytical expression for the exact pairwise error probability (PEP) of a differential space-time coded system operating over a spatially correlated slow fading channel. An analytic model for spatial correlation is used which fully accounts for antenna spacing, antenna geometry and non-isotropic scattering distributions. Inclusion of spatial information in error performance analysis provides valuable insights into the physical factors determining the performance of a differential space-time code (DSTC). Using this new PEP expression, we investigate the effects of antenna spacing, antenna geometries and azimuth power distribution parameters (angle of arrival/departure and angular spread) on the performance of a differential space-time block code (DSTBC) proposed in the literature for two transmit antennas.
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