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In this work, we explore the outage probability (OP) analysis of selectivedecode and forward (SDF) cooperation protocol employing multiple-inputmultipleoutput (MIMO) orthogonal space-time block-code (OSTBC) over timevarying Rayleigh fading channel conditions with imperfect channel stateinformation (CSI) and mobile nodes. The closed-form expressions of theper-block average OP, probability distribution function (PDF) of sum ofindependent and identically distributed (i.i.d.) Gamma random variables (RVs),and cumulative distribution function (CDF) are derived and used to investigatethe performance of the relaying network. A mathematical framework is developedto derive the optimal source-relay power allocation factors. It is shown thatsource node mobility affects the per-block average OP performance moresignificantly than the destination node mobility. Nevertheless, in other nodemobility situations, cooperative systems are constrained by an error floor witha higher signal to noise ratio (SNR) regimes. Simulation results show that theequal power allocation is the only possible optimal solution when source torelay link is stronger than the relay to destination link. Also, we allocatealmost all the power to the source node when source to relay link is weakerthan the relay to destination link. Simulation results also show that OPsimulated plots are in close agreement with the OP analytic plots at high SNRregimes.

Outage Probability Analysis of Selective-Decode and Forward Cooperative  Wireless Network over Time Varying Fading Channels with Node Mobility and  Imperfect CSI Condition