Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Martins, Wallace Alves"'
Autor:
Duncan, Juan Carlos Merlano, Ha, Vu Nguyen, Krivochiza, Jevgenij, Palisetty, Rakesh, Eappen, Geoffrey, Vasquez, Juan Andres, Martins, Wallace Alves, Chatzinotas, Symeon, Ottersten, Björn
The space communications industry is challenged to develop a technology that can deliver broadband services to user terminals equipped with miniature antennas, such as handheld devices. One potential solution to establish links with ground users is t
Externí odkaz:
http://arxiv.org/abs/2307.04589
Autor:
Ha, Vu Nguyen, Abdullah, Zaid, Eappen, Geoffrey, Duncan, Juan Carlos Merlano, Palisetty, Rakesh, Rios, Jorge Luis Gonzalez, Martins, Wallace Alves, Chou, Hong-Fu, Vasquez, Juan Andres, Garces-Socarras, Luis Manuel, Chaker, Haythem, Chatzinotas, Symeon
This paper jointly designs linear precoding (LP) and codebook-based beamforming implemented in a satellite with massive multiple-input multiple-output (mMIMO) antenna technology. The codebook of beamforming weights is built using the columns of the d
Externí odkaz:
http://arxiv.org/abs/2211.08757
Autor:
Abdullah, Zaid, Kisseleff, Steven, Martins, Wallace Alves, Chen, Gaojie, Sanguinetti, Luca, Ntontin, Konstantinos, Papazafeiropoulos, Anastasios, Chatzinotas, Symeon, Ottersten, Bjorn
Among the recent advances and innovations in wireless technologies, reconfigurable intelligent surfaces (RISs) have received much attention and are envisioned to be one of the enabling technologies for beyond 5G (B5G) networks. On the other hand, act
Externí odkaz:
http://arxiv.org/abs/2206.11707
Autor:
Abdullah, Zaid, Kisseleff, Steven, Ntontin, Konstantinos, Martins, Wallace Alves, Chatzinotas, Symeon, Ottersten, Bjorn
The key advantage of successive relaying (SR) networks is their ability to mimic the full-duplex (FD) operation with half-duplex (HD) relays. However, the main challenge that comes with such schemes is the associated inter-relay interference (IRI). I
Externí odkaz:
http://arxiv.org/abs/2109.05316
Autor:
Ntontin, Konstantinos, Boulogeorgos, Alexandros-Apostolos A., Björnson, Emil, Selimis, Dimitrios, Martins, Wallace Alves, Kisseleff, Steven, Abadal, Sergi, Alarcón, Eduard, Papazafeiropoulos, Anastasios, Lazarakis, Fotis, Alexiou, Angeliki, Chatzinotas, Symeon
In this work, we examine the potential of autonomous operation of a reconfigurable intelligent surface (RIS) using wireless energy harvesting from information signals. To this end, we first identify the main RIS power-consuming components and introdu
Externí odkaz:
http://arxiv.org/abs/2108.07953
Autor:
Abdullah, Zaid, Kisseleff, Steven, Ntontin, Konstantinos, Martins, Wallace Alves, Chatzinotas, Symeon, Ottersten, Bjorn
In this work, we investigate the decode-and-forward (DF) relay-aided double reconfigurable intelligent surface (RIS)-assisted networks, where the signal is subject to reflections from two RISs before reaching the destination. Different relay-aided ne
Externí odkaz:
http://arxiv.org/abs/2107.12083
Autor:
Ntontin, Konstantinos, Boulogeorgos, Alexandros-Apostolos A., Björnson, Emil, Selimis, Dimitrios, Martins, Wallace Alves, Abadal, Sergi, Alexiou, Angeliki, Lazarakis, Fotis, Kisseleff, Steven, Chatzinotas, Symeon
In this paper, we examine the potential for a reconfigurable intelligent surface (RIS) to be powered by energy harvested from information signals. This feature might be key to reap the benefits of RIS technology's lower power consumption compared to
Externí odkaz:
http://arxiv.org/abs/2105.00163
We tackle the problem of forecasting network-signal snapshots using past signal measurements acquired by a subset of network nodes. This task can be seen as a combination of multivariate time-series prediction and graph-signal interpolation. This is
Externí odkaz:
http://arxiv.org/abs/2006.01536
This work quantifies, for the first time, intersymbol and intercarrier interferences induced by very dispersive channels in OFDM systems. The resulting achievable data rate for \wam{suboptimal} OFDM transmissions is derived based on the computation o
Externí odkaz:
http://arxiv.org/abs/1901.08142
Publikováno v:
In Signal Processing February 2020 167
