Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Wesemann, Stefan"'
Autor:
Rajapaksha, Nuwanthika, Mohammadi, Jafar, Wesemann, Stefan, Wild, Thorsten, Rajatheva, Nandana
Transmit antenna muting (TAM) in multiple-user multiple-input multiple-output (MU-MIMO) networks allows reducing the power consumption of the base station (BS) by properly utilizing only a subset of antennas in the BS. In this paper, we consider the
Externí odkaz:
http://arxiv.org/abs/2306.05162
Publikováno v:
IEEE Communications Magazine, 2023
Ever since the invention of Bell Laboratories Layer Space-Time (BLAST) in mid 1990s, the focus of MIMO research and development has been largely on pushing the limit of spectral efficiency. While massive MIMO technologies laid the foundation of high
Externí odkaz:
http://arxiv.org/abs/2301.01119
Massive multiple-input multiple-output (mMIMO) regime reaps the benefits of spatial diversity and multiplexing gains, subject to precise channel state information (CSI) acquisition. In the current communication architecture, the downlink CSI is estim
Externí odkaz:
http://arxiv.org/abs/2208.11951
We demonstrate a high capacity IF-over-fiber mobile fronthaul solution for multi-user massive MIMO 5G RAN. Using this scheme, a record aggregated radio bandwidth of 25.6 GHz was transmitted on a single optical wavelength over 40 km without fiber chro
Externí odkaz:
http://arxiv.org/abs/2011.12214
Recently, Machine Learning (ML) is recognized as an effective tool for wireless communications and plays an evolutionary role to enhance Physical Layer (PHY) of 5th Generation (5G) and Beyond 5G (B5G) systems. In this paper, we focus on the ML-based
Externí odkaz:
http://arxiv.org/abs/2011.03521
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
Akademický článek
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Autor:
Wesemann, Stefan, Marzetta, Thomas L.
For frequency division duplex channels, a simple pilot loop-back procedure has been proposed that allows the estimation of the UL & DL channels at an antenna array without relying on any digital signal processing at the terminal side. For this scheme
Externí odkaz:
http://arxiv.org/abs/1610.03260
Autor:
Wesemann, Stefan, Fettweis, Gerhard
We study the distributed optimization of transmit strategies in a multiple-input, single-output (MISO) interference channel (IFC). Existing distributed algorithms rely on stricly synchronized update steps by the individual users. They require a globa
Externí odkaz:
http://arxiv.org/abs/1404.3525
Akademický článek
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