TY - GEN
T1 - An outer bound for a multiuser two-way channel
AU - Dash, Debashis
AU - Sabharwal, Ashutosh
PY - 2006
Y1 - 2006
N2 - Most networks are two-way in nature, i.e., senders are also receivers. However, little is known about two-way networks except for the simplest two-way channel between two nodes, first proposed and studied by Shannon in 1961. In this paper, we continue our study of a three-node multiuser two-way channel first proposed by the authors in [1]. Our main result is an outer bound on the capacity region of the three-node network where each node operates in half-duplex mode. The key challenge in deriving the outer bound stems from the infinite Markov chain structure induced by the implicit feedback in encoding at each node. We show that the outer bound reduces to well-known results in multiple access and broadcast channels in several special cases.
AB - Most networks are two-way in nature, i.e., senders are also receivers. However, little is known about two-way networks except for the simplest two-way channel between two nodes, first proposed and studied by Shannon in 1961. In this paper, we continue our study of a three-node multiuser two-way channel first proposed by the authors in [1]. Our main result is an outer bound on the capacity region of the three-node network where each node operates in half-duplex mode. The key challenge in deriving the outer bound stems from the infinite Markov chain structure induced by the implicit feedback in encoding at each node. We show that the outer bound reduces to well-known results in multiple access and broadcast channels in several special cases.
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M3 - Conference contribution
AN - SCOPUS:84940639698
T3 - 44th Annual Allerton Conference on Communication, Control, and Computing 2006
SP - 1125
EP - 1128
BT - 44th Annual Allerton Conference on Communication, Control, and Computing 2006
PB - University of Illinois at Urbana-Champaign, Coordinated Science Laboratory and Department of Computer and Electrical Engineering
T2 - 44th Annual Allerton Conference on Communication, Control, and Computing 2006
Y2 - 27 September 2006 through 29 September 2006
ER -