Can Negligible Cooperation Increase Network Capacity? The Average-Error Case
Abstract
In communication networks, cooperative strategies are coding schemes where network nodes work together to improve network performance metrics such as sum-rate. This work studies encoder cooperation in the setting of a discrete multiple access channel with two encoders and a single decoder. A node in the network that is connected to both encoders via rate-limited links, referred to as the cooperation facilitator (CF), enables the cooperation strategy. Previously, the authors presented a class of multiple access channels where the average-error sum-capacity has an infinite derivative in the limit where CF output link capacities approach zero. The authors also demonstrated that for some channels, the maximal-error sum-capacity is not continuous at the point where the output link capacities of the CF equal zero. This work shows that the the average-error sum-capacity is continuous when CF output link capacities converge to zero; that is, the infinite derivative of the average-error sum-capacity is not a result of its discontinuity as in the maximal-error case.
Additional Information
This material is based upon work supported by the National Science Foundation under Grant Numbers 1527524 and 1526771.Attached Files
Submitted - 1801.03655.pdf
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Additional details
- Eprint ID
- 94383
- Resolver ID
- CaltechAUTHORS:20190402-145653639
- CCF-1527524
- NSF
- CCF-1526771
- NSF
- Created
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2019-04-02Created from EPrint's datestamp field
- Updated
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2023-06-02Created from EPrint's last_modified field