  The position of a mobile D-3 brane moving towards a stack of localized D-5
branes has been studied as a candidate driving inflation in the warm
inflationary scenario. We compare the results obtained by considering the
dissipation parameter $\Gamma$ as an arbitrary function of only the inflaton
field and a particular form derived by Bastro-Gil et al \cite{Berera8}. We find
that the observables remain well within the recent observational constraint for
a wide range of model parameters for the first case whereas the spectral index
in the later case is always predicted blue, other cosmological observables
remaining well within bound for a wider range of parameters though. We also
discuss the non-gaussianity generated during inflation in this model.
