Capacity of Multiple Access Channel With States Known Noncausally at One Encoder and Only Strictly Causally at the Other Encoder

The capacity of a two-user state-dependent multiple access channel with common message and states known non-causally at only one encoder is established in, for both Discrete Memoryless (DM) and memoryless Gaussian cases. Lower and non-trivial upper bounds in the DM case and an alternative proof of the capacity for the Gaussian case are given. A key element in the converse proofs of is that one of the encoders, referred to as the uninformed encoder, sends inputs which are function of only the message to transmit.