NDLI: On channel output feedback in deterministic interference channels

Content Provider	IEEE Xplore Digital Library
Author	Sahai, A. Aggarwal, V. Yuksel, M. Sabharwal, A.
Copyright Year	2009
Description	Author affiliation: Department of ELE, Princeton University, Princeton, NJ 08544 (Aggarwal, V.) \|\| Department of ECE, Rice University, Houston, TX 77005 (Sahai, A.; Sabharwal, A.) \|\| Department of EEE, TOBB University of Economics and Technology, Ankara, Turkey (Yuksel, M.)
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.
Starting Page	298
Ending Page	302
File Size	311890
Page Count	5
File Format	PDF
ISBN	9781424449828
DOI	10.1109/ITW.2009.5351427
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-11
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Region 2 Transmitters Channel capacity Conferences Linear approximation Quality of service Broadcasting Interference channels Output feedback Information theory
Content Type	Text
Resource Type	Article

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