TY - GEN
T1 - Diversity-multiplexing tradeoff for the interference channel with a relay
AU - Zahavi, Daniel
AU - Zhang, Lili
AU - Marie, Ivana
AU - Dabora, Ron
AU - Goldsmith, Andrea J.
AU - Cui, Shuguang
PY - 2013/12/19
Y1 - 2013/12/19
N2 - We study the diversity-multiplexing tradeoff (DMT) for the slow fading interference channel with a relay (ICR). We first derive an outer bound on the DMT based on the cut-set bound. We then derive two inner bounds on the DMT: One is based on the compress-and-forward relaying scheme and the other is based on the decode-and-forward relaying scheme. We find conditions on the channel parameters and the multiplexing gains under which the proposed inner bounds achieve the optimal DMT. We also identify cases in which the DMT of the ICR is the same as two parallel fading relay channels, implying that interference does not decrease the DMT for each pair, and that a single relay can be DMT-optimal for two pairs simultaneously. Lastly, we identify conditions under which adding a relay strictly improves the DMT relative to the interference channel without a relay.
AB - We study the diversity-multiplexing tradeoff (DMT) for the slow fading interference channel with a relay (ICR). We first derive an outer bound on the DMT based on the cut-set bound. We then derive two inner bounds on the DMT: One is based on the compress-and-forward relaying scheme and the other is based on the decode-and-forward relaying scheme. We find conditions on the channel parameters and the multiplexing gains under which the proposed inner bounds achieve the optimal DMT. We also identify cases in which the DMT of the ICR is the same as two parallel fading relay channels, implying that interference does not decrease the DMT for each pair, and that a single relay can be DMT-optimal for two pairs simultaneously. Lastly, we identify conditions under which adding a relay strictly improves the DMT relative to the interference channel without a relay.
UR - http://www.scopus.com/inward/record.url?scp=84890322635&partnerID=8YFLogxK
U2 - 10.1109/ISIT.2013.6620662
DO - 10.1109/ISIT.2013.6620662
M3 - Conference contribution
AN - SCOPUS:84890322635
SN - 9781479904464
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 2428
EP - 2432
BT - 2013 IEEE International Symposium on Information Theory, ISIT 2013
T2 - 2013 IEEE International Symposium on Information Theory, ISIT 2013
Y2 - 7 July 2013 through 12 July 2013
ER -