The Unbounded Benefit of Encoder Cooperation for the $k$-User MAC (Extended Version).
Parham Noorzad, Michelle Effros, Michael L. Langberg · arXiv (Cornell University) · 2016
Cooperation strategies can improve the performance of a network by allowing nodes to work together. Since these strategies are usually studied in small networks, it is not clear how their properties scale when applied to larger networks. This paper generalizes a cooperation model from the 2-user MAC to the $k$-user MAC extending prior capacity bounds and characterizing the set of all MACs where the gain in sum-capacity as a result of encoder cooperation is much larger than the total number of bits shared by the encoders in the cooperation process.