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Caching is popular technique in content delivery networks that allows for reductions in transmission rates from the content-hosting server to the end users. Coded caching is a generalization of conventional caching that considers the…

Information Theory · Computer Science 2016-07-28 Li Tang , Aditya Ramamoorthy

Caching is a promising solution to satisfy the ever increasing demands for the multi-media traffics. In caching networks, coded caching is a recently proposed technique that achieves significant performance gains over the uncoded caching…

Information Theory · Computer Science 2017-10-23 Qifa Yan , Minquan Cheng , Xiaohu Tang , Qingchun Chen

Caching prefetches some library content at users' memories during the off-peak times (i.e., {\it placement phase}), such that the number of transmissions during the peak-traffic times (i.e., {\it delivery phase}) are reduced. A coded…

Information Theory · Computer Science 2021-12-23 Jinyu Wang , Minquan Cheng , Kai Wan , Giuseppe Caire

The technique of coded caching proposed by Madddah-Ali and Niesen is a promising approach to alleviate the load of networks during busy times. Recently, placement delivery array (PDA) was presented to characterize both the placement and…

Information Theory · Computer Science 2018-02-13 Qifa Yan , Xiaohu Tang , Qingchun Chen , Minquan Cheng

Coded caching can be applied in wireless multi-antenna communications by multicast beamforming coded data chunks to carefully selected user groups and using the existing file fragments in user caches to decode the desired files at each…

Information Theory · Computer Science 2019-05-14 MohammadJavad Salehi , Antti Tölli , Seyed Pooya Shariatpanahi , Jarkko Kaleva

In caching system, it is desirable to design a coded caching scheme with the transmission load $R$ and subpacketization $F$ as small as possible, in order to improve efficiency of transmission in the peak traffic times and to decrease…

Information Theory · Computer Science 2021-06-01 Minquan Cheng , Jinyu Wang , Xi Zhong , Qiang Wang

Caching is an efficient technique to reduce peak traffic by storing popular content in local caches. Placement delivery array (PDA) proposed by Yan et al. is a combinatorial structure to design coded caching schemes with uncoded placement…

Information Theory · Computer Science 2025-01-22 Jinyu Wang , Minquan Cheng , Kai Wan , Giuseppe Caire

Coded caching is a technique that generalizes conventional caching and promises significant reductions in traffic over caching networks. However, the basic coded caching scheme requires that each file hosted in the server be partitioned…

Information Theory · Computer Science 2018-02-20 Li Tang , Aditya Ramamoorthy

Coded caching is a promising technique to create coded multicast opportunities for cache-aided networks. By splitting each file into $F$ equal packets (i.e., the subpacketization level $F$) and letting each user cache a set of packets, the…

Information Theory · Computer Science 2025-10-28 Minquan Cheng , Yifei Huang , Youlong Wu , Jinyan Wang

This work considers the multi-access caching system proposed by Hachem et al., where each user has access to L neighboring caches in a cyclic wrap-around fashion. We first propose a placement strategy called the consecutive cyclic…

Information Theory · Computer Science 2022-09-08 Jinyu Wang , Minquan Cheng , Youlong Wu

We consider a coded caching system in which some users are offline at the time of delivery. Such systems are called hotplug coded caching systems. A placement delivery array (PDA) is a well-known tool for constructing a coded caching scheme…

Information Theory · Computer Science 2024-02-23 Charul Rajput , B. Sundar Rajan

Network based on distributed caching of content is a new architecture to alleviate the ongoing explosive demands for rate of multi-media traffic. In caching networks, coded caching is a recently proposed technique that achieves significant…

Information Theory · Computer Science 2017-10-16 Qifa Yan , Xiaohu Tang , Qingchun Chen

Content delivery networks often employ caching to reduce transmission rates from the central server to the end users. Recently, the technique of coded caching was introduced whereby coding in the caches and coded transmission signals from…

Information Theory · Computer Science 2016-02-16 Hooshang Ghasemi , Aditya Ramamoorthy

Content delivery networks store information distributed across multiple servers, so as to balance the load and avoid unrecoverable losses in case of node or disk failures. Coded caching has been shown to be a useful technique which can…

Information Theory · Computer Science 2016-11-22 Tianqiong Luo , Vaneet Aggarwal , Borja Peleato

This paper addresses the problem of exponentially increasing sub-packetization with the number of users in a centralized coded caching system by introducing a new coded caching scheme inspired by the symmetric neighboring consecutive side…

Information Theory · Computer Science 2020-09-24 Anjana A. Mahesh , B. Sundar Rajan

Coded caching techniques have received significant attention lately due to their provable gains in reducing the cost of data delivery in wireless networks. These gains, however, have only been demonstrated under the assumption of a free…

Information Theory · Computer Science 2020-03-26 Yousef AlHassoun , Faisal Alotaibi , Aly El Gamal , Hesham El Gamal

Coded caching is an effective technique to reduce the redundant traffic in wireless networks. The existing coded caching schemes require the splitting of files into a possibly large number of subfiles, i.e., they perform coded subfile…

Information Theory · Computer Science 2019-02-06 Seyed Ali Saberali , Lutz Lampe , Ian Blake

Caching is an efficient way to reduce peak-hour network traffic congestion by storing some contents at user's local cache without knowledge of later demands. Maddah-Ali and Niesen initiated a fundamental study of caching systems; they…

Information Theory · Computer Science 2015-11-10 Kai Wan , Daniela Tuninetti , Pablo Piantanida

Coded-caching is a promising technique to reduce the peak rate requirement of backhaul links during high traffic periods. In this letter, we study the effect of adaptive transmission on the performance of coded-caching based networks.…

Information Theory · Computer Science 2021-03-15 Behrooz Makki , Mohamed-Slim Alouini

This paper considers the secretive coded caching problem with shared caches in which no user must have access to the files that it did not demand. In a shared cache network, the users are served by a smaller number of helper caches and each…

Information Theory · Computer Science 2021-10-22 Elizabath Peter , K. K. Krishnan Namboodiri , B. Sundar Rajan