11 citations · 27 across the 14 of their papers we have counts for
12 papers · 1 filter
Reduced Complexity Decoding of n x n Algebraic Space-Time Codes
Amaro Barreal, Camilla Hollanti, David Karpuk
Algebraic space-time coding allows for reliable data exchange across fading multiple-input multiple-output channels. A powerful technique for decoding space-time codes in Maximum-L…
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…
A Comparison of Skewed and Orthogonal Lattices in Gaussian Wiretap Channels
Alex Karrila, Camilla Hollanti
We consider lattice coset-coded transmissions over a wiretap channel with additive white Gaussian noise (AWGN). Examining a function that can be interpreted as either the legitimat…
Fuchsian codes with arbitrarily high code rate
Iván Blanco-Chacón, Camilla Hollanti, Montserrat Alsina +1
Recently, so-called Fuchsian codes have been proposed in [I. Blanco-Chacón et al., "Nonuniform Fuchsian codes for noisy channels", J. of the Franklin Institute 2014] for communicat…
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…