TY - JOUR
T1 - Interference channels with correlated receiver side information
AU - Liu, Nan
AU - Gündüz, Deniz
AU - Goldsmith, Andrea J.
AU - Poor, H. Vincent
N1 - Funding Information:
Manuscript received October 13, 2008; revised May 28, 2010. Date of current version November 19, 2010. This work was supported in part by the National Science Foundation under Grants CCF-07-28208 and CNS-09-05398, by the Defense Advanced Research Projects Agency ITMANET program under Grant 1105741-1-TFIND, and by the U.S. Army Research Office under MURI Award W911NF-05-1-0246.
PY - 2010/12
Y1 - 2010/12
N2 - The problem of joint source-channel coding in transmitting independent sources over interference channels with correlated receiver side information is studied. When each receiver has side information correlated with its own desired source, it is shown that source-channel separation is optimal. When each receiver has side information correlated with the interfering source, sufficient conditions for reliable transmission are provided based on a joint source-channel coding scheme using the superposition encoding and partial decoding idea of Han and Kobayashi. When the receiver side information is a deterministic function of the interfering source, source-channel separation is again shown to be optimal. In addition to these source-channel coding problems, a new channel model that generalizes the classical interference channel is introduced: the interference channel with message side information. Achievable rate regions are given and a single letter characterization of the capacity region for a special class of Z-interference channels is provided. Using this capacity result and the optimality of source-channel separation, we demonstrate that our sufficient conditions for reliable transmission when each receiver has side information correlated with the interfering source are also necessary for some special cases. As a by-product, the capacity region of a class of Z-channels with degraded message sets is also provided.
AB - The problem of joint source-channel coding in transmitting independent sources over interference channels with correlated receiver side information is studied. When each receiver has side information correlated with its own desired source, it is shown that source-channel separation is optimal. When each receiver has side information correlated with the interfering source, sufficient conditions for reliable transmission are provided based on a joint source-channel coding scheme using the superposition encoding and partial decoding idea of Han and Kobayashi. When the receiver side information is a deterministic function of the interfering source, source-channel separation is again shown to be optimal. In addition to these source-channel coding problems, a new channel model that generalizes the classical interference channel is introduced: the interference channel with message side information. Achievable rate regions are given and a single letter characterization of the capacity region for a special class of Z-interference channels is provided. Using this capacity result and the optimality of source-channel separation, we demonstrate that our sufficient conditions for reliable transmission when each receiver has side information correlated with the interfering source are also necessary for some special cases. As a by-product, the capacity region of a class of Z-channels with degraded message sets is also provided.
KW - Interference channel
KW - joint source-channel coding
KW - receiver side information
KW - source-channel separation theorem
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U2 - 10.1109/TIT.2010.2080930
DO - 10.1109/TIT.2010.2080930
M3 - Article
AN - SCOPUS:78649337932
SN - 0018-9448
VL - 56
SP - 5984
EP - 5998
JO - IEEE Transactions on Information Theory
JF - IEEE Transactions on Information Theory
IS - 12
M1 - 5625627
ER -