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Cache-aided fog radio access networks with partial connectivity
, Article IEEE Wireless Communications and Networking Conference, WCNC ; Volume 2018-April , 8 June , 2018 , Pages 1-6 ; 15253511 (ISSN) ; 9781538617342 (ISBN) ; Motahari,S. A ; Nafie, M ; Gunduz, D ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2018
Abstract
Centralized coded caching and delivery is studied for a partially-connected fog radio access network (F-RAN), whereby a set of H edge nodes (ENs) (without caches), connected to a cloud server via orthogonal fronthaul links, serve K users over the wireless edge. The cloud server is assumed to hold a library of N files, each of size F bits; and each user, equipped with a cache of size MF bits, is connected to a distinct set of r ENs; or equivalently, the wireless edge from the ENs to the users is modeled as a partial interference channel. The objective is to minimize the normalized delivery time (NDT), which refers to the worst case delivery latency, when each user requests a single file from...
Bias temperature instability mitigation via adaptive cache size management
, Article IEEE Transactions on Very Large Scale Integration (VLSI) Systems ; Volume 25, Issue 3 , 2017 , Pages 1012-1022 ; 10638210 (ISSN) ; Ebrahimi, M ; Miremadi, S. G ; Tahoori, M. B ; Sharif University of Technology
Abstract
Bias temperature instability (BTI) is one of the major CMOS reliability issues in nanoscales. The main impact of BTI on SRAM memory cells is the degradation of the static noise margin (SNM), which leads to a higher susceptibility to failures. A variety of techniques for mitigating the impact of BTI on caches have been proposed at architecture level. However, their considerable overheads limit the application of such techniques. Recent studies showed that the utilization of the cache capacity widely varies from one workload to another and even within a workload. When cache utilization is low, for the majority of the cells, the same value is stored for a very long period, which significantly...