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Multiround Private Information Retrieval: Capacity and Storage Overhead
Hua Sun, Syed A. Jafar
The capacity has recently been characterized for the private information retrieval (PIR) problem as well as several of its variants. In every case it is assumed that all the querie…
Optimal Download Cost of Private Information Retrieval for Arbitrary Message Length
Hua Sun, Syed A. Jafar
A private information retrieval scheme is a mechanism that allows a user to retrieve any one out of messages from non-communicating replicated databases, each of which stor…
The Capacity of Symmetric Private Information Retrieval
Hua Sun, Syed A. Jafar
Private information retrieval (PIR) is the problem of retrieving as efficiently as possible, one out of messages from non-communicating replicated databases (each holds all…
The Capacity of Robust Private Information Retrieval with Colluding Databases
Hua Sun, Syed A. Jafar
Private information retrieval (PIR) is the problem of retrieving as efficiently as possible, one out of messages from non-communicating replicated databases (each holds all…
Elevated Multiplexing and Signal Space Partitioning in the 2 User MIMO IC with Partial CSIT
Bofeng Yuan, Syed A. Jafar
The user MIMO interference channel with arbitrary antenna configurations is studied under arbitrary levels of partial CSIT for each of the channels, to find the degrees of free…
The Capacity of Private Information Retrieval
Hua Sun, Syed A. Jafar
In the private information retrieval (PIR) problem a user wishes to retrieve, as efficiently as possible, one out of messages from non-communicating databases (each holds a…