Erasure Broadcast Channels With Intermittent Feedback

Achievable data rates in wireless systems rely heavily on the available channel state information (CSI) throughout network. However, feedback links, which provide this information, are scarce, unreliable, and subject to security threats. In work, we study impact of having intermittent links capacity region canonical two-user erasure broadcast channels. our model, at any time instant, each receiver broadcasts its CSI, other node, either becomes with unit delay or gets erased. For setting, develop a new set outer bounds capture nature links. These depend probability that CSI from both receivers erased transmitter. particular, if time, least one two is nodes, then outer-bounds match global delayed CSI. We also capacity-achieving transmission strategies under certain scenarios, establish connection between problem Blind Index Coding feedback.