On the adaptive capacity region of fading MACs with distributed CSI
Sreejith Sreekumar, Sibi Raj B. Pillai, Bikash Kumar Dey · 2014
We consider a block-fading Gaussian MAC under a local CSI model where the transmitters have access to their own fading states. The system requires that the joint transmission rate-vector should not be in outage in any block. The average rate-tuples that can be achieved in fading MAC under such local distributed CSI and outage-free transmission belong to the so called adaptive capacity region. We present the adaptive capacity region of MACs under fairly general fading distributions and local CSI. Our results considerably generalize the known sum-capacity solutions in literature, by evaluating the full capacity region. Our results also provide the adaptive capacity region for arbitrary given power allocation functions. We further extend our results to more general CSI models where each user has additional quantized CSI of the other links.