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电子学报  2015 

一种有效减小最大擦除次数差的损耗均衡设计

DOI: 10.3969/j.issn.0372-2112.2015.07.014, PP. 1344-1348

Keywords: 固态存储系统,智能电能表,损耗均衡,位置指针,触发阈值

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Abstract:

损耗均衡影响智能电能表中闪存固态存储系统的寿命和性能.为了提高系统寿命和性能,本文提出了一种有效减小最大擦除次数差的损耗均衡设计.该设计根据位置指针所指物理块的相对擦除次数差来决定损耗均衡是否需要启动和损耗均衡需要的物理块地址.实验结果表明,该设计相比于已有的损耗均衡方法,能有效减小最大擦除次数差,减小擦除次数方差,有效降低损耗不均衡程度.本文还对影响损耗均衡程度的触发阈值进行了分析与讨论,得出了在选择触发阈值时,需要综合考虑损耗均衡情况和时间开销的结论.

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