Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Zirwas, Wolfgang"'
Autor:
Zirwas, Wolfgang, Panzner, Berthold, Sivasivaganesan, Rakash, Boas, Brenda Vilas, Suárez, Luis A.
In this article, a novel approach for mobile radio communications is proposed and analysed, which is promising for future 6G cooperative distributed MIMO systems. The fundamental idea is a new mechanism namely start stop bit method, which transmits b
Externí odkaz:
http://arxiv.org/abs/2402.04187
In 3GPP New Radio (NR) Release 18 we see the first study item starting in May 2022, which will evaluate the potential of AI/ML methods for Radio Access Network (RAN) 1, i.e., for mobile radio PHY and MAC layer applications. We use the profiling metho
Externí odkaz:
http://arxiv.org/abs/2203.08074
Machine learning (ML) applications for wireless communications have gained momentum on the standardization discussions for 5G advanced and beyond. One of the biggest challenges for real world ML deployment is the need for labeled signals and big meas
Externí odkaz:
http://arxiv.org/abs/2111.07858
Knowledge of channel state information (CSI) is fundamental to many functionalities within the mobile wireless communications systems. With the advance of machine learning (ML) and digital maps, i.e., digital twins, we have a big opportunity to learn
Externí odkaz:
http://arxiv.org/abs/2111.07854
A variety of wireless channel estimation methods, e.g., MUSIC and ESPRIT, rely on prior knowledge of the model order. Therefore, it is important to correctly estimate the number of multipath components (MPCs) which compose such channels. However, env
Externí odkaz:
http://arxiv.org/abs/2106.11633
Massive MIMO is one of the main features of 5G mobile radio systems. However, it often leads to high cost, size and power consumption. To overcome these issues, the use of constrained radio frequency (RF) frontends has been proposed, as well as novel
Externí odkaz:
http://arxiv.org/abs/2101.09705
The performance of centralized and distributed massive MIMO deployments are analyzed for indoor office scenarios. The distributed deployments use one of the following precoding methods: (1) local precoding with local channel state information (CSI) t
Externí odkaz:
http://arxiv.org/abs/1801.02888
Autor:
Nedelcu, Andrei, Steiner, Fabian, Staudacher, Markus, Kramer, Gerhard, Zirwas, Wolfgang, Ganesan, Rakash Sivasiva, Baracca, Paolo, Wesemann, Stefan
A multi-antenna, greedy, iterative, and quantized (MAGIQ) precoding algorithm is proposed for downlink channels. MAGIQ allows a straightforward integration with orthogonal frequency-division multiplexing (OFDM). MAGIQ is compared to three existing al
Externí odkaz:
http://arxiv.org/abs/1712.08735
Autor:
Staudacher, Markus, Kramer, Gerhard, Zirwas, Wolfgang, Panzner, Berthold, Ganesan, Rakash Sivasiva
A low cost solution for constructing receiver signal points is investigated that combines a large number of constrained radio frequency (RF) frontends with a limited number of full RF chains. The constrained RF front ends have low cost and are limite
Externí odkaz:
http://arxiv.org/abs/1702.02414
Conditions are derived on line-of-sight channels to ensure the feasibility of interference alignment. The conditions involve choosing only the spacing between two subcarriers of an orthogonal frequency division multiplexing (OFDM) scheme. The maximal
Externí odkaz:
http://arxiv.org/abs/1303.5321