Search Results - "de Carvalho, Elisabeth"

Non-Stationarities in Extra-Large-Scale Massive MIMO by Carvalho, Elisabeth De, Ali, Anum, Amiri, Abolfazl, Angjelichinoski, Marko, Heath, Robert W.

“…Massive MIMO, a key technology for increasing area spectral efficiency in cellular systems, was developed assuming moderately sized apertures. In this article,…”
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Uncoordinated pilot decontamination in massive MIMO systems by Sørensen, Jesper H., Carvalho, Elisabeth de

“…This work concerns wireless cellular networks applying time division duplexing (TDD) massive multiple-input multiple-output (MIMO) technology. Such systems…”
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Linear Receivers in Non-Stationary Massive MIMO Channels With Visibility Regions by Ali, Anum, Carvalho, Elisabeth De, Heath, Robert W.

“…In a massive MIMO system with large arrays, the channel becomes spatially non-stationary. We study the impact of spatial non-stationarity characterized by…”
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Wireless Access for Ultra-Reliable Low-Latency Communication: Principles and Building Blocks by Popovski, Petar, Nielsen, Jimmy J., Stefanovic, Cedomir, De Carvalho, Elisabeth, Strom, Erik, Trillingsgaard, Kasper F., Bana, Alexandru-Sabin, Kim, Dong Min, Kotaba, Radoslaw, Park, Jihong, Sorensen, Rene B.

“…URLLC is an important new feature brought by 5G, with a potential to support a vast set of applications that rely on mission-critical links. In this article,…”
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Weighted sum-rate maximization using weighted MMSE for MIMO-BC beamforming design by Christensen, S.S., Agarwal, R., De Carvalho, E., Cioffi, J.M.

“…This paper studies linear transmit filter design for Weighted Sum-Rate (WSR) maximization in the multiple input multiple output broadcast channel (MIMO-BC)…”
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Sum-Rate Optimization in a Two-Way Relay Network with Buffering by Liu, Huaping, Popovski, Petar, de Carvalho, Elisabeth, Zhao, Yuping

“…A Relay Station (RS) uses a buffer to store and process the received data packets before forwarding them. Recently, the buffer has been exploited in one-way…”
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Towards Massive Connectivity Support for Scalable mMTC Communications in 5G Networks by Bockelmann, Carsten, Pratas, Nuno K., Wunder, Gerhard, Saur, Stephan, Navarro, Monica, Gregoratti, David, Vivier, Guillaume, De Carvalho, Elisabeth, Ji, Yalei, Stefanovic, Cedomir, Popovski, Petar, Wang, Qi, Schellmann, Malte, Kosmatos, Evangelos, Demestichas, Panagiotis, Raceala-Motoc, Miruna, Jung, Peter, Stanczak, Slawomir, Dekorsy, Armin

“…The fifth generation of cellular communication systems is foreseen to enable a multitude of new applications and use cases with very different requirements. A…”
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Adapting to Nonlinear Transmitters With Hybrid Model Training for Neural Receivers by Nielsen, Martin Hedegaard, Carvalho, Elisabeth De, Shen, Ming

“…This paper proposes a novel hybrid model transfer learning approach designed for end-to-end OFDM neural receivers that effectively manage multiple channels and…”
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Improving the rates in wireless relay systems through superposition coding by Popovski, Petar, de Carvalho, Elisabeth

“…We introduce a new two-step relaying scheme based on superposition coding, SC-relaying. In Step 1, the source A S broadcasts a message, created by…”
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A Two-stage Deep Learning Receiver for High Throughput Power Efficient LEO Satellite System with Varied Operation Status by Nielsen, Martin H., De Carvalho, Elisabeth, Shen, Ming

“…Low Earth orbit satellites are expected to be one of the biggest suppliers of wireless communication within the coming years. For this to happen 5G and 6G…”
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Ultra Reliable Low Latency Communications in Massive Multi-Antenna Systems by Bana, Alexandru-Sabin, Xu, Guixian, Carvalho, Elisabeth De, Popovski, Petar

“…Large number of antennas in Massive MIMO offer a significant spatial diversity, which makes them an attractive possibility for use in wireless settings that…”
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CoMPflex: CoMP for In-Band Wireless Full Duplex by Thomsen, Henning, Popovski, Petar, De Carvalho, Elisabeth, Pratas, Nuno K., Dong Min Kim, Boccardi, Federico

“…In this letter, we consider emulation of a full duplex (FD) cellular base station (BS) by using two spatially separated and coordinated half duplex (HD) BSs…”
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Radio Sensing with Large Intelligent Surface for 6G by Vaca-Rubio, Cristian J., Ramirez-Espinosa, Pablo, Kansanen, Kimmo, Tan, Zheng-Hua, Carvalho, Elisabeth de

“…This paper leverages the potential of Large Intelligent Surfaces (LIS) for radio sensing in 6G wireless networks. By taking advantage of arbitrary…”
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Multi-Flow Scheduling for Coordinated Direct and Relayed Users in Cellular Systems by Chan Dai Truyen Thai, Popovski, P., Kaneko, M., de Carvalho, E.

“…There are two basic principles used in wireless network coding to design throughput-efficient schemes: (1) aggregation of communication flows and (2)…”
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Experimental Study of the Benefits of a Second Antenna at the User Side in a Massive MIMO System by Oliveras Martinez, Alex, Popovski, Petar, Nielsen, Jesper Odum, De Carvalho, Elisabeth

“…Massive MIMO is commonly described as a large number of base station (BS) antennas serving a smaller number of single-antenna users. However, adding a second…”
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Outage Analysis of Downlink URLLC in Massive MIMO systems with Power Allocation by Bana, Alexandru-Sabin, Sanguinetti, Luca, Carvalho, Elisabeth De, Popovski, Petar

“…Massive MIMO is seen as a main enabler for low- latency communications, thanks to its high spatial degrees of freedom. The channel hardening and favorable…”
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Concurrent Communication and Sensing in Cognitive Radio Devices: Challenges and an Enabling Solution by Tsakalaki, Elpiniki, Alrabadi, Osama N., Tatomirescu, Alexandru, de Carvalho, Elisabeth, Pedersen, Gert F.

“…Cognitive radios (CRs) need to continuously monitor the availability of unoccupied spectrum. Prior work on spectrum sensing mainly focused on time-slotted…”
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Precoding for TDD and FDD in Measured Massive MIMO Channels by Nielsen, Jesper Odum, Karstensen, Anders, Eggers, Patrick C. F., De Carvalho, Elisabeth, Steinbock, Gerhard, Alm, Martin

“…This paper analyzes the performance of well-known precoding schemes for massive multiple-input multiple-output (MMIMO) systems. The investigations are based on…”
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Assessing Wireless Sensing Potential With Large Intelligent Surfaces by Vaca-Rubio, Cristian J., Ramirez-Espinosa, Pablo, Kansanen, Kimmo, Tan, Zheng-Hua, De Carvalho, Elisabeth, Popovski, Petar

“…Sensing capability is one of the most highlighted new feature of future 6G wireless networks. This paper addresses the sensing potential of Large Intelligent…”
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Molecular epidemiology of CTX-M producing Enterobacteriaceae isolated from bloodstream infections in Rio de Janeiro, Brazil: emergence of CTX-M-15 by Seki, Liliane Miyuki, Pereira, Polyana Silva, de Souza Conceição, Magda, Souza, Maria José, Marques, Elizabeth Andrade, Carballido, Jupira Miron, de Carvalho, Maria Elisabeth Serqueira, Assef, Ana Paula D’Alincourt Carvalho, Asensi, Marise Dutra

“…The present study was designed to evaluate the molecular epidemiology of CTX-M producing Klebsiella pneumoniae, Enterobacter cloacae and Escherichia coli…”
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