A converse bound for cache-aided interference networks
Girgis Bebawy, Antonious Mamdouh and Erçetin, Özgür and Nafie, Mohammed and Elbatt, Tamer (2019) A converse bound for cache-aided interference networks. In: 52nd Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, USA
Official URL: http://dx.doi.org/10.1109/ACSSC.2018.8645486
In this paper, an interference network with arbitrary number of transmitters and receivers is studied, where each transmitter is equipped with a finite size cache. We obtain an information-theoretic lower bound on both the peak normalized delivery lime (NDT), and the expected NDT of cache-aided interference networks with uniform content popularity. For the peak NDT, we show that our lower bound is strictly tighter than the hound in the literature for small cache sizes. Moreover, we show that the feasibility region on the expected NDT is bigger than that of the peak NDT.
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