Mobility

Mixed CSIT DL Channel: Gains with Interference Aware Receivers

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Executive Summary

The Broadcast Channels (BC), a single transmitter transmitting data to multiple receivers, has been widely studied in literature mostly with and sometimes without the availability of Channel State Information at the Transmitter (CSIT). The authors study a very practical version of the BC where the transmitter has CSIT of some users and no CSIT for other users. They look at the simplest instance of such a heterogeneous BC where a multi-antenna transmitter Base-Station (BS) is trying to communicate data to two single-antenna User Equipments (UEs), having the perfect CSIT about UE-1 and no CSIT about UE- 2. They propose a very simple transmission strategy at the BS combined with an intelligent interference-aware receiver at UE- 2.

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