State-dependent degraded broadcast channels with non-causal encoder side information

State dependent channels are used to model communication scenarios where the channel law is controlled by an external state process, for instance, wireless fading channels. Multi-user extensions of state dependent models have received considerable attention in the information theory literature. However, a complete characterization of the capacity region is unknown in most scenarios. In this paper, we consider a discrete memoryless state dependent broadcast channel, where the state process is non-causally known at the encoder. We present inner and outer bounds on the capacity region of this setup. We also give a partial characterization of the boundary of the capacity region that is tight in certain cases. (C) 2017 Elsevier GmbH. All rights reserved.