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- W3116339950 abstract "Cache-aided wireless device-to-device (D2D) networks have demonstrated more promising performance improvement for video distribution than conventional distribution methods; thus, understanding the fundamental scaling behavior of such networks is highly important. However, the existing scaling laws for multi-hop networks are not optimal even in the case of Zipf popularity distributions (gaps between upper and lower bounds are not constants); furthermore, there are no scaling law results for such networks for the more practical case of a Mandelbrot-Zipf (MZipf) popularity distribution. We thus in this work investigate the throughput-outage performance for cache-aided wireless D2D networks adopting multi-hop communications, with the MZipf popularity distribution for file requests and users distributed according to Poisson point process. We propose an achievable content caching and delivery scheme, and then analyze its performance. We obtain the optimal scaling law by showing that the achievable performance is tight to the proposed outer bound. Since the Zipf distribution is a special case of the MZipf distribution, the optimal scaling law for the networks considering the Zipf popularity distribution is also obtained, which closes the gap in literature." @default.
- W3116339950 created "2021-01-05" @default.
- W3116339950 creator A5058487273 @default.
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- W3116339950 date "2021-04-01" @default.
- W3116339950 modified "2023-10-18" @default.
- W3116339950 title "Optimal Throughput-Outage Analysis of Cache-Aided Wireless Multi-Hop D2D Networks" @default.
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- W3116339950 doi "https://doi.org/10.1109/tcomm.2020.3045787" @default.
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