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- W3124319763 abstract "Content delivery success in wireless caching helper networks depends mainly on cache-based channel selection diversity and network interference. For given channel fading and network geometry, both channel selection diversity and network interference dynamically vary according to what and how the caching helpers cache at their finite storage space. We study probabilistic content placement (or caching placement) to desirably control cache-based channel selection diversity and network interference in a stochastic wireless caching helper network, with sophisticated considerations of wireless fading channels, interactions among multiple users, such as interference and loads at caching helpers, and arbitrary memory size. Using stochastic geometry, we derive optimal caching probabilities in the closed form to maximize the average success probability of content delivery and propose an efficient algorithm to find the solution in a noise-limited network. In an interference-limited network, based on a lower bound of the average success probability of content delivery, we find near-optimal caching probabilities in the closed form to control the channel selection diversity and the network interference. We numerically verify that the proposed content placement is superior to other comparable content placement strategies." @default.
- W3124319763 created "2021-02-01" @default.
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- W3124319763 date "2016-10-01" @default.
- W3124319763 modified "2023-10-01" @default.
- W3124319763 title "Caching Placement in Stochastic Wireless Caching Helper Networks: Channel Selection Diversity via Caching" @default.
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- W3124319763 doi "https://doi.org/10.1109/twc.2016.2586841" @default.
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