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Performance Coding: Codes for Fast Write and Read in Multi-Level NVMs

机译:性能编码:用于多级NVM中的快速写入和读取的代码

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摘要

Multi-level memory cells are used in non-volatile memories to increase the storage density. Using multi-level cells, however, imposes lower read and write speeds, limiting their usability with high-performing applications. In this work we study the tradeoff between storage density and write/read speeds using codes. The contributions are codes that give high-performance write and read processes with minimal reduction in storage density. We describe the codes, give a detailed analytical treatment of their information rate and speed, provide encoding/decoding algorithms, and compare them with more basic access schemes and upper bounds. Using performance coding enables accessing the memory with variable access speeds, thus creating heterogenous storage devices serving a variety of applications with improved efficiency.
机译:在非易失性存储器中使用多级存储单元以增加存储密度。但是,使用多层单元会降低读写速度,从而限制了它们在高性能应用程序中的可用性。在这项工作中,我们研究了使用代码在存储密度和写入/读取速度之间进行权衡。这些贡献的代码可以在不降低存储密度的情况下提供高性能的写入和读取过程。我们描述了这些代码,对其信息速率和速度进行了详细的分析处理,提供了编码/解码算法,并将其与更多基本访问方案和上限进行了比较。使用性能编码可以以可变的访问速度访问内存,从而创建异构存储设备,以更高的效率为各种应用服务。

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