Simulating Cosmic Reionization and the Radiation Backgrounds from the
  Epoch of Reionization
  Large-scale reionization simulations are described which combine the results
of cosmological N-body simulations that model the evolving density and velocity
fields and identify the galactic halo sources, with ray-tracing radiative
transfer calculations which model the nonequilibrium ionization of the
intergalactic medium. These simulations have been used to predict some of the
signature effects of reionization on cosmic radiation backgrounds, including
the CMB, near-IR, and redshifted 21cm backgrounds. We summarize some of our
recent progress in this work, and address the question of whether observations
of such signature effects can be used to distinguish the relative contributions
of galaxies of different masses to reionization.
