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This work explores coded caching in the symmetric $K$-user cache-aided MISOBC with imperfect CSIT-type feedback, for the specific case where the cachesize is much smaller than the library size. Building on the recently exploredsynergy between caching and delayed-CSIT, and building on the tradeoff betweencaching and CSIT quality, the work proposes new schemes that boost the impactof small caches, focusing on the case where the cumulative cache size issmaller than the library size. For this small-cache setting, based on theproposed near-optimal schemes, the work identifies the optimal cache-aideddegrees-of-freedom (DoF) performance within a factor of 4.

Feedback-Aided Coded Caching for the MISO BC with Small Caches