135 citations · 415 across the 43 of their papers we have counts for
7 papers · 1 filter
Homophonic Coding Design for Communication Systems Employing the Encoding-Encryption Paradigm
Miodrag J. Mihaljevic, Frederique Oggier, Hideki Imai
This paper addresses the design of a dedicated homophonic coding for a class of communication systems which, in order to provide both reliability and security, first encode the dat…
Lattice Code Design for the Rayleigh Fading Wiretap Channel
Jean-Claude Belfiore, Frederique Oggier
It has been shown recently that coding for the Gaussian Wiretap Channel can be done with nested lattices. A fine lattice intended to the legitimate user must be designed as a usual…
Fast-Decodable Asymmetric Space-Time Codes from Division Algebras
Roope Vehkalahti, Camilla Hollanti, Frédérique Oggier
Multiple-input double-output (MIDO) codes are important in the near-future wireless communications, where the portable end-user device is physically small and will typically contai…
Codes over Matrix Rings for Space-Time Coded Modulations
Frederique Oggier, Patrick Sole, Jean-Claude Belfiore
It is known that, for transmission over quasi-static MIMO fading channels with n transmit antennas, diversity can be obtained by using an inner fully diverse space-time block code…
An Information-Theoretic Analysis of the Security of Communication Systems Employing the Encoding-Encryption Paradigm
Frederique Oggier, Miodrag J. Mihaljevic
This paper proposes a generic approach for providing enhanced security to communication systems which encode their data for reliability before encrypting it through a stream cipher…
Self-repairing Homomorphic Codes for Distributed Storage Systems
Frederique Oggier, Anwitaman Datta
Erasure codes provide a storage efficient alternative to replication based redundancy in (networked) storage systems. They however entail high communication overhead for maintenanc…