258 citations · 326 across the 32 of their papers we have counts for
6 papers · 2 filters
Probability Estimates for Fading and Wiretap Channels from Ideal Class Zeta Functions
David Karpuk, Anne-Maria Ernvall-Hytönen, Camilla Hollanti +1
In this paper, new probability estimates are derived for ideal lattice codes from totally real number fields using ideal class Dedekind zeta functions. In contrast to previous work…
Node Repair for Distributed Storage Systems over Fading Channels
David Karpuk, Camilla Hollanti, Amaro Barreal
Distributed storage systems and associated storage codes can efficiently store a large amount of data while ensuring that data is retrievable in case of node failure. The study of…
Multi-Dimensional and Non-Uniform Constellation Optimization via the Special Orthogonal Group
David Karpuk, Camilla Hollanti
With the goal of optimizing the CM capacity of a finite constellation over a Rayleigh fading channel, we construct for all dimensions which are a power of 2 families of rotation ma…
Hybrid Channel Pre-Inversion and Interference Alignment Strategies
David Karpuk, Peter Moss
In this paper we consider strategies for MIMO interference channels which combine the notions of interference alignment and channel pre-inversion. Users collaborate to form data-sh…
Algebraic Codes and a New Physical Layer Transmission Protocol for Wireless Distributed Storage Systems
Amaro Barreal, Camilla Hollanti, David Karpuk +1
In a wireless storage system, having to communicate over a fading channel makes repair transmissions prone to physical layer errors. The first approach to combat fading is to utili…
Space-Time Storage Codes for Wireless Distributed Storage Systems
Camilla Hollanti, David Karpuk, Amaro Barreal +1
Distributed storage systems (DSSs) have gained a lot of interest recently, thanks to their robustness and scalability compared to single-device storage. Majority of the related res…