TY - GEN
T1 - Dirty interference cancelation for multiple access channels
AU - Duan, Ruchen
AU - Liang, Yingbin
AU - Khisti, Ashish
AU - Shamai, Shlomo
N1 - Publisher Copyright:
© 2014 IEICE.
PY - 2014/12/8
Y1 - 2014/12/8
N2 - The state-dependent multiple access channel with a helper is investigated, in which transmitters 1 and 2 send two messages respectively to one receiver, which is corrupted by an independent and identically distributed (i.i.d.) state sequence. The state sequence is known to neither the transmitters nor the receiver, but is known to a helper noncausally. Thus, the helper assists the multi-access transmission by exploiting the state information. Our focus is on the Gaussian channel with additive state. An outer bound on the capacity region is first derived, and an inner bound is then obtained based on a dirty interference cancelation scheme. By comparing the inner and outer bounds, the full capacity region or segment on the boundary of the capacity region are characterized under various channel parameters. Practical motivation of the model and implication of the results are also discussed.
AB - The state-dependent multiple access channel with a helper is investigated, in which transmitters 1 and 2 send two messages respectively to one receiver, which is corrupted by an independent and identically distributed (i.i.d.) state sequence. The state sequence is known to neither the transmitters nor the receiver, but is known to a helper noncausally. Thus, the helper assists the multi-access transmission by exploiting the state information. Our focus is on the Gaussian channel with additive state. An outer bound on the capacity region is first derived, and an inner bound is then obtained based on a dirty interference cancelation scheme. By comparing the inner and outer bounds, the full capacity region or segment on the boundary of the capacity region are characterized under various channel parameters. Practical motivation of the model and implication of the results are also discussed.
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M3 - Conference contribution
AN - SCOPUS:84920513790
T3 - Proceedings of 2014 International Symposium on Information Theory and Its Applications, ISITA 2014
SP - 463
EP - 467
BT - Proceedings of 2014 International Symposium on Information Theory and Its Applications, ISITA 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 International Symposium on Information Theory and Its Applications, ISITA 2014
Y2 - 26 October 2014 through 29 October 2014
ER -