Achievable Rate Regions for the Interference Channel with State Information

In this paper, we study the state-dependent two-user interference channel, where the state information is non-causally known at both transmitters but unknown to either of the receivers. We propose two coding schemes for the discrete memoryless case: simultaneous encoding for the sub-messages in the first coding scheme and superposition encoding in the second one, both applying rate splitting and Gel'fand-Pinsker coding. The corresponding achievable rate regions are established. Moreover, for the Gaussian case, we focus on the first coding scheme and discuss the active interference cancelation mechanism, which is a generalized dirty-paper coding technique, to partially eliminate the state effect at the receivers.