TY - GEN
T1 - Sum capacity of general deterministic interference channel with channel output feedback
AU - Sahai, Achaleshwar
AU - Aggarwal, Vaneet
AU - Yüksel, Melda
AU - Sabharwal, Ashutosh
PY - 2010
Y1 - 2010
N2 - In a two-user interference channel, there are four possible feedback paths - two from each receiver to the transmitters. This leads to 16 possible models of feedback. In this paper, we derive the sum capacity of two user deterministic interference channel for all sixteen cases. We find that whenever any of the direct link feedback from a receiver to its own transmitter is present, the sum-capacity is the same as when all four feedback links are present. Further when no direct link feedback is present, the sum capacity with one cross-link feedback and two cross-links of feedback is the same. This sum-capacity is the same as the sum-capacity when there is no feedback except in the regime of interference in which both interfering links are weaker than both the direct-links in which case the sum-capacity is the same as sum-capacity of the feedback model with all four feedback links.
AB - In a two-user interference channel, there are four possible feedback paths - two from each receiver to the transmitters. This leads to 16 possible models of feedback. In this paper, we derive the sum capacity of two user deterministic interference channel for all sixteen cases. We find that whenever any of the direct link feedback from a receiver to its own transmitter is present, the sum-capacity is the same as when all four feedback links are present. Further when no direct link feedback is present, the sum capacity with one cross-link feedback and two cross-links of feedback is the same. This sum-capacity is the same as the sum-capacity when there is no feedback except in the regime of interference in which both interfering links are weaker than both the direct-links in which case the sum-capacity is the same as sum-capacity of the feedback model with all four feedback links.
UR - https://www.scopus.com/pages/publications/77955702407
UR - https://www.scopus.com/inward/citedby.url?scp=77955702407&partnerID=8YFLogxK
U2 - 10.1109/ISIT.2010.5513336
DO - 10.1109/ISIT.2010.5513336
M3 - Conference contribution
AN - SCOPUS:77955702407
SN - 9781424469604
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 335
EP - 339
BT - 2010 IEEE International Symposium on Information Theory, ISIT 2010 - Proceedings
T2 - 2010 IEEE International Symposium on Information Theory, ISIT 2010
Y2 - 13 June 2010 through 18 June 2010
ER -