2021/09/21 by Mohammad Javad Salehi, Salehi, MohammadJavad, Hamidreza Bakhshzad Mahmoodi +3
Computer Science · Engineering · #Advanced Wireless Communication Technologies #Caching and Content Delivery #Cooperative Communication and Network Coding #FOS: Computer and information sciences #Information Theory (cs.IT)
paper · pdf · doi:10.48550/arxiv.2109.10008
openalex publication_date 2021/09/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this paper, we study how coded caching can be efficiently applied to multiple-input multiple-output (MIMO) communications. This is an extension to cache-aided multiple-input single-output (MISO) communications, where it is shown that with an L-antenna transmitter and coded caching gain t, a cumulative coded caching and spatial multiplexing gain of t+L is achievable. We show that, interestingly, for MIMO setups with G-antenna receivers, a coded caching gain larger than MISO setups by a multiplicative factor of G is possible, and the full coded caching and spatial multiplexing gain of Gt+L is also achievable. Furthermore, we propose a novel algorithm for building low-subpacketization, high-performance MIMO coded caching schemes using a large class of existing MISO schemes.