Private Information Retrieval from Heterogeneous Uncoded Caching Databases
Private Information Retrieval from Heterogeneous Uncoded Caching Databases
复制标题
从异构未编码缓存数据库检索私有信息
DOI:
10.1109/isit.2019.8849652
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
S. Ulukus
中科院分区:
文献类型:
--
作者:
Karim A. Banawan;Batuhan Arasli;Yi;S. Ulukus
We consider private information retrieval (PIR) of a single file out of K files from N non-colluding databases with heterogeneous storage constraints m = (m1, ⋯, mN). The aim of this work is to jointly design the content placement phase and the retrieval phase in order to minimize the download cost in the PIR phase. We characterize the optimal PIR download cost as a linear program. By analyzing the structure of the optimal solution of this linear program, we show that, surprisingly, the optimal download cost in our heterogeneous case matches its homogeneous counterpart where all databases have the same average storage constraint $\mu = \frac{1}{N}\sum\nolimits_{n = 1}^N {{m_n}} $. We show the optimum content placement explicitly for N = 3.
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影响因子:
2.5
作者:
Karim A. Banawan;S. Ulukus
通讯作者:
Karim A. Banawan;S. Ulukus
影响因子:
2.5
作者:
Karim A. Banawan;Batuhan Arasli;Yi-Peng Wei;S. Ulukus
通讯作者:
Karim A. Banawan;Batuhan Arasli;Yi-Peng Wei;S. Ulukus
影响因子:
2.5
作者:
Karim A. Banawan;S. Ulukus
通讯作者:
Karim A. Banawan;S. Ulukus
影响因子:
2.5
作者:
Karim A. Banawan;S. Ulukus
通讯作者:
Karim A. Banawan;S. Ulukus