TY - GEN
T1 - On necessary conditions for multiple-access-relay channels with correlated sources
AU - Murin, Yonathan
AU - Dabora, Ron
AU - Gunduz, Deniz
PY - 2013/12/19
Y1 - 2013/12/19
N2 - The characterization of the optimal joint source-channel coding scheme for transmission of correlated sources over multiple-access-relay channels (MARCs) is an open problem. Here, this problem is studied in the presence of arbitrarily correlated side information at both the relay and the destination. Since each transmitter observes only one of the sources, the admissible joint distributions of the sources and channel inputs must satisfy a Markov relationship which constrains their statistical dependence. This observation is used together with the new data processing inequality derived by [Kang and Ulukus, 2011] to obtain two new sets of single-letter necessary conditions. These new conditions are shown to be at least as tight as the previously known ones, and strictly tighter than the cut-set bound.
AB - The characterization of the optimal joint source-channel coding scheme for transmission of correlated sources over multiple-access-relay channels (MARCs) is an open problem. Here, this problem is studied in the presence of arbitrarily correlated side information at both the relay and the destination. Since each transmitter observes only one of the sources, the admissible joint distributions of the sources and channel inputs must satisfy a Markov relationship which constrains their statistical dependence. This observation is used together with the new data processing inequality derived by [Kang and Ulukus, 2011] to obtain two new sets of single-letter necessary conditions. These new conditions are shown to be at least as tight as the previously known ones, and strictly tighter than the cut-set bound.
UR - http://www.scopus.com/inward/record.url?scp=84890384211&partnerID=8YFLogxK
U2 - 10.1109/ISIT.2013.6620286
DO - 10.1109/ISIT.2013.6620286
M3 - Conference contribution
AN - SCOPUS:84890384211
SN - 9781479904464
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 549
EP - 553
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 -