Cache-aided content delivery in MIMO channels

Khac-Hoang Ngo (1) , Sheng Yang (1) , Mari Kobayashi (1)

1 L2S - Laboratoire des signaux et systèmes

In this paper, we investigate the content delivery problem in the context of multi-antenna (MIMO) wireless networks. The single-antenna users, equipped with some cache memory, receive requested contents from the server through a multi-antenna base station. We propose a scheme that carefully combines the multicast and unicast capabilities offered by MIMO, as a function of the quality of channel state information at the transmitter side. Thereby we reveal the complementary roles of coded caching and MIMO transmission for content delivery.

Domaines: Mathématiques [math]; Théorie de l'information et codage [math.IT]

Khac-Hoang Ngo, Sheng Yang, Mari Kobayashi. Cache-aided content delivery in MIMO channels. 2016 54th Annual Allerton Conference on Communication, Control, and Computing (Allerton), Sep 2016, Monticello, United States. ⟨10.1109/ALLERTON.2016.7852215⟩. ⟨hal-01806310⟩