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Improved rate for a multi-server coded caching.

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Minquan Cheng, Qiaoling Zhang, Jing Jiang

Multi-server coded caching, which can further reduce the amount oftransmission by means of the collaboration among these servers in the wirelessnetwork during the peak traffic times, can be seen everywhere in our life. Thisamount is called rate. The three servers setting (two data servers and oneparity check server)is widely used in practice, e.g. redundant array ofindependent disks-4. Luo et al. in 2016 proposed the first coded caching schemefor this setting. In this paper, we obtain a smaller rate by modifying Luo'sscheme for some parameters. In addition, our method can be more generalized tofurther reduce the rate.

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