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1 Journal of Telecommunications and Information Technology

1 2006

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Exact pairwise error probability analysis of space-time codes in spatially correlated fading channels

Lamahewa T. A., Kimon M. K., Abhayapala T. D., Kennedy R. A.

Journal of Telecommunications and Information Technology

2006

nr 1

60-68

In this paper, we derive an analytical expression for the exact pairwise error probability (PEP) of a space-time coded system operating over a spatially correlated slow fading channel using a moment-generating function-based approach. This analytical PEP expression is more realistic than previously published exact-PEP expressions as it fully accounts for antenna spacing, antenna geometries (uniform linear array, uniform grid array, uniform circular array, etc.) and scattering models (uniform, Gaussian, Laplacian, Von-Mises, etc.). Inclusion of spatial information provides valuable insights into the physical factors determining the performance of a space-time code. We demonstrate the strength of our new analytical PEP expression by evaluating the performance of two space-time trellis codes proposed in the literature for different spatial scenarios.