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Title: On Channel Output Feedback in Deterministic Interference Channels
Authors: Sahai, Achaleshwar
Aggarwal, Vaneet
Yüksel, Melda
Sabharwal, Ashutosh
Keywords: [No Keywords]
Issue Date: 2009
Publisher: IEEE
Source: IEEE Information Theory Workshop (ITW) -- OCT 11-16, 2009 -- Taormina, ITALY
Abstract: In this paper, we study the effect of channel output feedback on the sum capacity in a two-user symmetric deterministic interference channel. We find that having a single feedback link from one of the receivers to its own transmitter results in the same sum capacity as having a total of 4 feedback links from both the receivers to both the transmitters. Hence, from the sum capacity point of view, the three additional feedback links are not helpful. We also consider a half-duplex feedback model, where the forward and the feedback resources are symmetric and time-shared. Surprisingly, we find that there is no gain in sum-capacity with feedback in a half-duplex feedback model, when interference links have more capacity than direct links.
ISBN: 978-1-4244-4983-5
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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