TY - GEN
T1 - Dirty interference cancellation for Gaussian broadcast channels
AU - Duan, Ruchen
AU - Liang, Yingbin
AU - Khisti, Ashish
AU - Shamai, Shlomo
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/12/1
Y1 - 2014/12/1
N2 - The state-dependent broadcast channel with a helper is investigated, in which a transmitter wishes to send messages to two receivers via a broadcast channel. The channel is corrupted by an independent and identically distributed (i.i.d.) state sequence which is known to neither the transmitter nor the receivers. A helper that knows the state sequence noncausally assists the broadcast transmission to cancel state interference. Two scenarios are studied. In scenario 1, the transmitter sends one message to both receivers, and in scenario II, the transmitter sends two private messages respectively to two receivers. Our focus is on the Gaussian channel with additive state. Inner and outer bounds are derived for both scenarios. By comparing the inner and outer bounds, capacity/capacity region are characterized under various ranges of channel parameters. Practical impact of the model and results are discussed.
AB - The state-dependent broadcast channel with a helper is investigated, in which a transmitter wishes to send messages to two receivers via a broadcast channel. The channel is corrupted by an independent and identically distributed (i.i.d.) state sequence which is known to neither the transmitter nor the receivers. A helper that knows the state sequence noncausally assists the broadcast transmission to cancel state interference. Two scenarios are studied. In scenario 1, the transmitter sends one message to both receivers, and in scenario II, the transmitter sends two private messages respectively to two receivers. Our focus is on the Gaussian channel with additive state. Inner and outer bounds are derived for both scenarios. By comparing the inner and outer bounds, capacity/capacity region are characterized under various ranges of channel parameters. Practical impact of the model and results are discussed.
UR - http://www.scopus.com/inward/record.url?scp=84929379884&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84929379884&partnerID=8YFLogxK
U2 - 10.1109/ITW.2014.6970892
DO - 10.1109/ITW.2014.6970892
M3 - Conference contribution
AN - SCOPUS:84929379884
T3 - 2014 IEEE Information Theory Workshop, ITW 2014
SP - 551
EP - 555
BT - 2014 IEEE Information Theory Workshop, ITW 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 IEEE Information Theory Workshop, ITW 2014
Y2 - 2 November 2014 through 5 November 2014
ER -