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The index coding problem is a fundamental transmission problem arising in content distribution and wireless networks. Traditional approach to solve this problem is to find heuristic/ approximation minimum clique partition solution on an…

网络与互联网体系结构 · 计算机科学 2016-11-15 Jalaluddin Qureshi

Exponentially growing subpacketization is known to be a major issue for practical implementation of coded caching, specially in networks with multi-antenna communication setups. We provide a new coded caching scheme for such networks, which…

信息论 · 计算机科学 2019-10-30 MohammadJavad Salehi , Antti Tölli , Seyed Pooya Shariatpanahi

Current methods for compressing neural network weights, such as decomposition, pruning, quantization, and channel simulation, often overlook the inherent symmetries within these networks and thus waste bits on encoding redundant…

信息论 · 计算机科学 2024-10-03 Jiajun He , Gergely Flamich , José Miguel Hernández-Lobato

High availability of containerized applications requires to perform robust storage of applications' state. Since basic replication techniques are extremely costly at scale, storage space requirements can be reduced by means of erasure or…

信息论 · 计算机科学 2017-11-09 Francesco De Pellegrini , Rachid El Azouzi , Alonso Silva , and Olfa Hassani

This paper proposes an erasure correcting code and its systematic form for the distributed storage system. The proposed codes are encoded by exclusive OR and bit-level shift operation. By the shift operation, the encoded packets are…

信息论 · 计算机科学 2020-01-08 Yuta Hanaki , Takayuki Nozaki

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…

信息论 · 计算机科学 2019-05-14 MohammadJavad Salehi , Antti Tölli , Seyed Pooya Shariatpanahi , Jarkko Kaleva

As a strategy to further reduce the transmission pressure during the peak traffic times in wireless network, coded caching has been widely studied recently. And several coded caching schemes are constructed focusing on the two core problems…

信息论 · 计算机科学 2017-12-27 Minquan Cheng , Jing Jiang , Youzhi Yao

Memory bandwidth is known to be a performance bottleneck for FPGA accelerators, especially when they deal with large multi-dimensional data-sets. A large body of work focuses on reducing of off-chip transfers, but few authors try to improve…

硬件体系结构 · 计算机科学 2024-01-23 Corentin Ferry , Nicolas Derumigny , Steven Derrien , Sanjay Rajopadhye

In a distributed storage system, recovering from multiple failures is a critical and frequent task that is crucial for maintaining the system's reliability and fault-tolerance. In this work, we focus on the problem of repairing multiple…

信息论 · 计算机科学 2018-05-09 Marwen Zorgui , Zhiying Wang

This paper presents an explicit construction for an $((n,k,d=n-1), (\alpha,\beta))$ regenerating code over a field $\mathbb{F}_Q$ operating at the Minimum Storage Regeneration (MSR) point. The MSR code can be constructed to have rate $k/n$…

信息论 · 计算机科学 2016-09-20 Birenjith Sasidharan , Myna Vajha , P. Vijay Kumar

Repair of multiple partially failed cache nodes is studied in a distributed wireless content caching system, where $r$ out of a total of $n$ cache nodes lose part of their cached data. Broadcast repair of failed cache contents at the…

分布式、并行与集群计算 · 计算机科学 2018-07-04 Nitish Mital , Katina Kralevska , Deniz Gunduz , Cong Ling

For modern flash-based SSDs, the performance overhead of internal data migrations is dominated by the data transfer time, not by the flash program time as in old SSDs. In order to mitigate the performance impact of data migrations, we…

操作系统 · 计算机科学 2018-10-11 Duwon Hong , Myungsuk Kim , Jisung Park , Myoungsoo Jung , Jihong Kim

When a node in a distributed storage system fails, it needs to be promptly repaired to maintain system integrity. While typical erasure codes can provide a significant storage advantage over replication, they suffer from poor repair…

信息论 · 计算机科学 2018-07-10 Geonu Kim , Jungwoo Lee

In distributed storage systems (DSSs), the optimal tradeoff between node storage and repair bandwidth is an important issue for designing distributed coding strategies to ensure large scale data reliability. The capacity of DSSs is obtained…

信息论 · 计算机科学 2019-01-11 Jingzhao Wang , Tinghan Wang , Yuan Luo , Kenneth W. Shum

Distributed data storage systems are essential to deal with the need to store massive volumes of data. In order to make such a system fault-tolerant, some form of redundancy becomes crucial, incurring various overheads - most prominently in…

分布式、并行与集群计算 · 计算机科学 2011-12-25 Frederique Oggier , Anwitaman Datta

MDS array codes are widely used in storage systems due to their computationally efficient encoding and decoding procedures. An MDS code with $r$ redundancy nodes can correct any $r$ node erasures by accessing all the remaining information…

信息论 · 计算机科学 2016-03-04 Zhiying Wang , Itzhak Tamo , Jehoshua Bruck

We consider $(n,k,l)$ MDS codes of length $n$, dimension $k$, and subpacketization $l$ over a finite field $\mathbb{F}$. A codeword of such a code consists of $n$ column-vectors of length $l$ over $\mathbb{F}$, with the property that any…

信息论 · 计算机科学 2021-04-06 Ameera Chowdhury , Alexander Vardy

The high repair cost of (n,k) Maximum Distance Separable (MDS) erasure codes has recently motivated a new class of codes, called Regenerating Codes, that optimally trade off storage cost for repair bandwidth. On one end of this spectrum of…

信息论 · 计算机科学 2010-04-19 Changho Suh , Kannan Ramchandran

The problem of exact repair of a failed node in multi-hop networked distributed storage systems is considered. Contrary to the most of the current studies which model the repair process by the direct links from surviving nodes to the new…

信息论 · 计算机科学 2014-01-14 Majid Gerami , Ming Xiao

Future systems based on nano-scale devices will provide great potentials for scaling up in system complexity, yet they will be highly susceptible to operational faults. While spare units can be generally used to enhance reliability, they…

硬件体系结构 · 计算机科学 2018-12-05 Soroush Khaleghi , Wenjing Rao