...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Magnetics >Polar Codes for Spin-Torque Transfer Magnetic Random Access Memory
【24h】

Polar Codes for Spin-Torque Transfer Magnetic Random Access Memory

机译：自旋扭矩传递磁性随机存取存储器的极地代码

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Spin-torque transfer magnetic random access memory (STT-MRAM) is a promising non-volatile memory (NVM) technology due to its superior performance in terms of power consumption, write/read speed, endurance, and scalability. However, the reliability of STT-MRAM is affected by the process variation and thermal fluctuation, leading to both the write errors and read errors. Hence, it is important to develop error correction coding schemes to correct the memory cell errors and improve the system reliability. In this paper, we propose, for the first time, the design and optimization of polar codes for the STT-MRAM channel. In particular, as the STT-MRAM channel is asymmetric by nature, we first adopt an approach to symmetrize the channel so as to facilitate the design of effective polar codes. We then apply the density evolution method to construct polar codes and optimize their performance for the STT-MRAM channel. Furthermore, in order to mitigate the raw bit error rate diversity of STT-MRAM cells caused by process variations, we propose a rate-adaptive polar coding scheme in conjunction with an adaptive decoding algorithm. Simulation results and the decoder complexity analysis show that the constructed polar codes outperform both the Bose-Chaudhuri-Hoquenghem codes and low-density parity-check codes with lower decoding complexity, thus demonstrating the great potential of polar codes for improving the reliability of emerging NVMs.
机译：自旋扭矩转移磁性随机存取存储器（STT-MRAM）是一种很有前途的非易失性存储器（NVM）技术，因为它在功耗，写入/读取速度，耐用性和可伸缩性方面具有出色的性能。但是，STT-MRAM的可靠性受制程变化和热波动的影响，从而导致写入错误和读取错误。因此，开发纠错编码方案以纠正存储单元错误并提高系统可靠性很重要。在本文中，我们首次提出了STT-MRAM通道极性码的设计和优化。特别地，由于STT-MRAM信道本质上是不对称的，因此我们首先采用使信道对称的方法，以便于设计有效的极性码。然后，我们应用密度演化方法构造极地码，并针对STT-MRAM通道优化其性能。此外，为了减轻由工艺变化引起的STT-MRAM单元的原始误码率多样性，我们结合自适应解码算法提出了一种速率自适应极性编码方案。仿真结果和解码器复杂度分析表明，构造的极性码性能优于Bose-Chaudhuri-Hoquenghem码和低密度奇偶校验码，解码复杂度较低，从而证明了极性码在提高新兴NVM可靠性方面的巨大潜力。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号