The Capacity of Private Information Retrieval with Disjoint Colluding Sets

被引:0
作者
Jia, Zhuqing [1 ]
Sun, Hua [1 ]
Jafar, Syed A. [1 ]
机构
[1] Univ Calif Irvine, CPCC, Irvine, CA 92717 USA
来源
GLOBECOM 2017 - 2017 IEEE GLOBAL COMMUNICATIONS CONFERENCE | 2017年
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中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
An extension of private information retrieval (PIR) with colluding servers is considered. The N servers are partitioned into M disjoint sets, such that collusion can only occur between servers that belong to the same set. Specifically, the m-th set is comprised of N-m servers, of which any T-m can collude. The capacity of this PIR problem is shown to be C = (1 + (Sigma(M)(m-1) N-m/T-m)(-1) +...+(Sigma(M)(m-1) N-m/T-m)(-(K-1)))(-1).
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页数:6
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