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https://hdl.handle.net/20.500.11851/7179
Title: | On Channel Output Feedback in Deterministic Interference Channels | Authors: | Sahai, Achaleshwar Aggarwal, Vaneet Yüksel, Melda Sabharwal, Ashutosh |
Keywords: | [No Keywords] | 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. | URI: | https://hdl.handle.net/20.500.11851/7179 | 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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