Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Marinello, Jose Carlos"'
Autor:
Junior, Wilson de Souza, Guerra, David William Marques, Marinello, José Carlos, Abrão, Taufik, Hossain, Ekram
Manifold optimization (MO) is a powerful mathematical framework that can be applied to optimize functions over complex geometric structures, which is particularly useful in advanced wireless communication systems, such as reconfigurable intelligent s
Externí odkaz:
http://arxiv.org/abs/2408.00553
This chapter delves into the critical aspects of optimizing energy efficiency (EE) in active reconfigurable intelligent surface (RIS)-assisted massive MIMO (M-MIMO) wireless communication systems. We develop a comprehensive and unified theoretical fr
Externí odkaz:
http://arxiv.org/abs/2402.14994
Publikováno v:
Physical Communication, Elsevier. Available online 31 March 2023, 102062
The main requirements for 5G and beyond connectivity include a uniform high quality of service, which can be attained in crowded scenarios by extra-large MIMO (XL-MIMO) systems. Another requirement is to support increasing connected users in (over)cr
Externí odkaz:
http://arxiv.org/abs/2304.03873
A novel random access (RA) scheme for mixed URLLC-mMTC traffic scenario is proposed using realistic statistical models, with the use mode presenting long-term traffic regularity. The traffic is predicted by a long short-term memory neural network, wh
Externí odkaz:
http://arxiv.org/abs/2303.01159
We propose a novel random access (RA) protocol that accounts for the network traffic in mixed URLLC-mMTC scenarios. By considering an IoT environment under high mMTC traffic demand, we model the traffic of each service using realistic statistical mod
Externí odkaz:
http://arxiv.org/abs/2303.01511
Providing minimum quality-of-service (QoS) in crowded wireless communications systems, with high user density, is challenging due to the network structure with limited transmit power budget and resource blocks. Smart resource allocation methods, such
Externí odkaz:
http://arxiv.org/abs/2205.06861
In a cell-free massive multiple-input multiple-output (CF-mMIMO) network, multiple access points (APs) actively cooperate to serve users' equipment (UEs). We consider how the random access (RA) problem can be addressed by such a network under the occ
Externí odkaz:
http://arxiv.org/abs/2107.10294
Autor:
Marinello, José Carlos, Abrão, Taufik, Amiri, Abolfazl, de Carvalho, Elisabeth, Popovski, Petar
We consider the recently proposed extra-large scale massive multiple-input multiple-output (XL-MIMO) systems, with some hundreds of antennas serving a smaller number of users. Since the array length is of the same order as the distance to the users,
Externí odkaz:
http://arxiv.org/abs/2009.02542
Autor:
Marinello, José Carlos, Abrão, Taufik, Souza, Richard Demo, de Carvalho, Elisabeth, Popovski, Petar
Publikováno v:
J. C. Marinello, T. Abr\~ao, R. D. Souza, E. de Carvalho and P. Popovski, "Achieving Fair Random Access Performance in Massive MIMO Crowded Machine-Type Networks," in IEEE Wireless Communications Letters. 2019
The use of massive multiple-input multiple-output (MIMO) to serve a crowd of user equipments (UEs) is challenged by the deficit of pilots. Assuming that the UEs are intermittently active, this problem can be addressed by a shared access to the pilots
Externí odkaz:
http://arxiv.org/abs/2001.03802
Autor:
Bana, Alexandru-Sabin, de Carvalho, Elisabeth, Soret, Beatriz, Abrão, Taufik, Marinello, José Carlos, Larsson, Erik G., Popovski, Petar
Massive MIMO is considered to be one of the key technologies in the emerging 5G systems, but also a concept applicable to other wireless systems. Exploiting the large number of degrees of freedom (DoFs) of massive MIMO essential for achieving high sp
Externí odkaz:
http://arxiv.org/abs/1905.06205