803 citations · 2.6k across the 256 of their papers we have counts for
6 papers · 2 filters
Dependence Balance Based Outer Bounds for Gaussian Networks with Cooperation and Feedback
Ravi Tandon, Sennur Ulukus
We obtain new outer bounds on the capacity regions of the two-user multiple access channel with generalized feedback (MAC-GF) and the two-user interference channel with generalized…
Secrecy Capacity of a Class of Broadcast Channels with an Eavesdropper
Ersen Ekrem, Sennur Ulukus
We study the security of communication between a single transmitter and multiple receivers in a broadcast channel in the presence of an eavesdropper. We consider several special cl…
Secrecy in Cooperative Relay Broadcast Channels
E. Ekrem, S. Ulukus
We investigate the effects of user cooperation on the secrecy of broadcast channels by considering a cooperative relay broadcast channel. We show that user cooperation can increase…
A New Upper Bound on the Capacity of a Class of Primitive Relay Channels
Ravi Tandon, Sennur Ulukus
We obtain a new upper bound on the capacity of a class of discrete memoryless relay channels. For this class of relay channels, the relay observes an i.i.d. sequence , which is…
Capacity of a Class of Diamond Channels
Wei Kang, Sennur Ulukus
We study a special class of diamond channels which was introduced by Schein in 2001. In this special class, each diamond channel consists of a transmitter, a noisy relay, a noisele…
Outer Bounds for Multiple Access Channels with Feedback using Dependence Balance
Ravi Tandon, Sennur Ulukus
We use the idea of dependence balance to obtain a new outer bound for the capacity region of the discrete memoryless multiple access channel with noiseless feedback (MAC-FB). We co…