Výsledky vyhledávání - "Juergen Freudenberger"

Four-Dimensional Hurwitz Signal Constellations, Set Partitioning, Detection, and Multilevel Coding

Autor: Daniel Rohweder, Robert F. H. Fischer, Sebastian Stern, Sergo Shavgulidze, Juergen Freudenberger

Publikováno v: IEEE Transactions on Communications. 69:5079-5090

The Hurwitz lattice provides the densest four-dimensional packing. This fact has motivated research on four-dimensional Hurwitz signal constellations for optical and wireless communications. This work presents a new algebraic construction of finite s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cef34792b243b0f614094ff898d7c9d9
https://doi.org/10.1109/tcomm.2021.3083323

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Four-Dimensional Signal Constellations Based on Binary Frequency-Shift Keying and M-ary Amplitude-Phase-Shift Keying

Autor: Nodar Ugrelidze, Juergen Freudenberger, Sergo Shavgulidze

Publikováno v: Journal of Computer and Communications. :170-180

In this article, we give the construction of new four-dimensional signal constellations in the Euclidean space, which represent a certain combination of binary frequency-shift keying (BFSK) and M-ary amplitude-phase-shift keying (MAPSK). Description

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8982147d9e1550087641cc5cee1e3a09
https://doi.org/10.4236/jcc.2020.812016

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Generalized Multistream Spatial Modulation Based on One Mannheim Error Correcting Codes and their Low-Complexity Detection

Autor: Daniel Rohweder, Patrick Oleschak, Sergo Shavgulidze, Juergen Freudenberger

Publikováno v: ICCE-Berlin

This paper proposes a novel transmission scheme for generalized multistream spatial modulation. This new approach uses one Mannheim error correcting codes over Gaussian or Eisenstein integers as multidimensional signal constellations. These codes ena

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::660e16ee9f89311e84814d58bc7dfa8c
https://doi.org/10.1109/icce-berlin50680.2020.9352168

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A two-microphone diversity system and its application for hands-free car kits

Autor: Klaus Linhard, Juergen Freudenberger

Publikováno v: INTERSPEECH
Scopus-Elsevier

In this paper we consider a two-channel diversity technique thatcombines the processed signals of two separate microphones.Forin-car applications, this enables a better compromise forthemicrophone positions. The advantage of the proposed systemis its

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8032454e608c312e7b3706567eed273
https://doi.org/10.21437/interspeech.2005-743

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Low-complexity detection for generalized multistream spatial modulation

Autor: Sebastian Stern, Daniel Rohweder, Sergo Shavgulidze, Juergen Freudenberger, Robert F. H. Fischer

Publikováno v: BASE-Bielefeld Academic Search Engine
SPAWC

This work proposes a suboptimal detection algorithm for generalized multistream spatial modulation. Many suboptimal detection algorithms for spatial modulation use two-stage detection schemes where the set of active antennas is detected in the first

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdaec7a51b31f7d4895f1a744b55e434
https://opus.htwg-konstanz.de/frontdoor/index/index/docId/2177