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Can Negligible Cooperation Increase Network Capacity? The Average-Error Case

Noorzad, Parham and Effros, Michelle and Langberg, Michael (2018) Can Negligible Cooperation Increase Network Capacity? The Average-Error Case. . (Unpublished)

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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.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Noorzad, Parham0000-0002-0201-3791
Langberg, Michael0000-0002-7470-0718
Additional Information:This material is based upon work supported by the National Science Foundation under Grant Numbers 1527524 and 1526771.
Funding AgencyGrant Number
Subject Keywords:Continuity, cooperation facilitator, edge removal problem, maximal-error capacity region, multiple access channel
Record Number:CaltechAUTHORS:20190402-145653639
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:94383
Deposited By: George Porter
Deposited On:02 Apr 2019 22:05
Last Modified:02 Jun 2023 00:38

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