  We provide a closed form upper bound formulation for the average
pairwise-error probability (PEP) of selective decode and forward (SDF)
cooperation protocol for a keyhole (pinhole) channel condition. We have
employed orthogonal space-time block-code scheme (OSTBC) in conjunction with
multi-antenna (MIMO) technology. We have used moment generating function (MGF)
based approach for deriving the upper bound of PEP. PEP expression provides
information regarding the performance of the wireless system with respect to
the channel conditions. We have included simulation results which confirm the
analytical results of our proposed upper bound. Simulation results show that
due to keyhole effect performance of wireless system degrades.
