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Empowering the Tracking Performance of LEO-Based Positioning by Means of Meta-Signals
(Institute of Electrical and Electronics Engineers, 2021-09)
Global Navigation Satellite Systems (GNSSs) are the most widespread technology for Position Navigation and Timing (PNT). They have been traditionally deployed exploiting Medium Earth Orbit (MEO) or Geosynchronous Orbit ...
On rotated D-n-lattices constructed via totally real number fields
(Springer Basel AgBaselSuíça, 2013)
Constructions of rotated lattice constellations in dimensions power of 3
(2018-09-01)
In this paper, we present the constructions of rotated ℤ3r-1-lattices, where r is a positive integer, via ℤ-modules of the ring of the integers ℤ [ζ3r+ζ 3r-1]. Our focus is on totally real number fields since the associated ...
Vulnerabilidade dos sistemas GNSS a ataques do tipo Spoofing
(Universidade Federal de Santa MariaBrasilUFSMCentro de Tecnologia, 2019-12-10)
The vulnerability of the GNSS constellation extends beyond blocking and signal loss to fake attacks, where communication signal spoofs are generated to manipulate the position, speed, and information a receiver receives. ...
Design and analysis of fully-diverse multidimensional constellations for Rayleigh fading channels
(2018)
As técnicas de transmissão propostas na literatura, que exploram a diversidade de espaço de sinais (SSD) para canais com desvanecimento, consideram rotação ou precodificação de uma constelação de sinais original. Nesta ...