Abstract
In network cooperation strategies, nodes work together with the aim of increasing transmission rates or reliability. This paper demonstrates that enabling cooperation between the transmitters of a two-user multiple access channel via a cooperation facilitator that has access to both messages results in a network whose maximal-and average-error capacity regions are the same; this benefit ensues even when the information received by each transmitter is negligible. From this result, it follows that if a multiple access channel with no transmitter cooperation has different maximal-and average-error sum-capacities, then the maximal-error sum-capacity of the network consisting of this channel and a cooperation facilitator is not continuous with respect to the output edge capacities of the facilitator. Thus, there exist networks where adding negligible rate yields a non-negligible benefit.
Original language | English |
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Pages (from-to) | 4282-4293 |
Number of pages | 12 |
Journal | IEEE Transactions on Information Theory |
Volume | 64 |
Issue number | 6 |
DOIs | |
State | Published - Jun 2018 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 1963-2012 IEEE.
Keywords
- Continuity
- cooperation
- edge removal
- maximal-error capacity region
- multiple access channel
- negligible capacity
- network information theory
- reliability