  Decentralized coded content caching for next generation cellular networks is
studied. The contents are linearly combined and cached in under-utilized caches
of User Terminals (UTs) and its throughput capacity is compared with
decentralized uncoded content caching. In both scenarios, we consider multihop
Device-to-Device (D2D) communications and the use of femtocaches in the
network. It is shown that decentralized coded content caching can increase the
network throughput capacity compared to decentralized uncoded caching by
reducing the number of hops needed to deliver the desired content. Further, the
throughput capacity for Zipfian content request distribution is computed and it
is shown that the decentralized coded content cache placement can increase the
throughput capacity of cellular networks by a factor of $(\log(n))^2$ where $n$
is the number of nodes served by a femtocache.
