Feedback Increases the Degrees of Freedom of Two Unicast Gaussian Networks

In this paper we investigate the degrees of freedom of layered two unicast Gaussian networks with destination-to-source feedback. The feedback model allows the destinations to feedback their received signals to their respective sources perfectly. Based upon the non-feedback degrees-of-freedom result by Shomorony and Avestimehr [1], we show that in general, feedback enlarges the degrees of freedom region for two unicast layered Gaussian networks. This is the first case in literature where feedback can provide a degrees-of-freedom gain in multi-user interference networks.


Published in:
2012 50Th Annual Allerton Conference On Communication, Control, And Computing (Allerton), 1850-1855
Presented at:
50th Annual Allerton Conference on Communication, Control, and Computing (Allerton)
Year:
2013
Publisher:
New York, Ieee
ISBN:
978-1-4673-4539-2
Laboratories:




 Record created 2013-10-01, last modified 2018-03-17


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