  Precision measurement of the neutrino mixing parameters and the determination
of mass hierarchy are the primary goals of the present and upcoming neutrino
experiments. In this work, we study the sensitivity of T2K,NO$\nu$A and LBNE
experiments to discover leptonic CP violation and the determination of neutrino
mass hierarchy. We obtain the correlation between the CP violating phase
$\delta_{CP}$ and the mixing angles $\theta_{13}$, $\theta_{23}$ and the
sensitivity to determine the octant of atmospheric mixing angle $\theta_{23}$.
The entire analysis is done for a total 10 years (5$\nu$+ 5$\bar \nu$) of
running of T2K, NO$\nu$A and LBNE experiments. Furthermore, we also consider
the impact of cross section uncertainties on the CP violation sensitivity of
LBNE experiment.
