Zobrazeno 1 - 10
of 258
pro vyhledávání: '"Ignacio Santamaria"'
Publikováno v:
IEEE Access, Vol 11, Pp 70833-70852 (2023)
This paper proposes a general optimization framework to improve the spectral and energy efficiency (EE) of ultra-reliable low-latency communication (URLLC) simultaneous-transfer-and-receive (STAR) reconfigurable intelligent surface (RIS)-assisted int
Externí odkaz:
https://doaj.org/article/05e85a96969d4ac1b33889b8aa5c5744
Publikováno v:
IEEE Access, Vol 9, Pp 96948-96963 (2021)
In this paper, we propose a cooperative distributed framework to optimize a variety of rate and energy-efficiency (EE) utility functions, such as the minimum-weighted rate or the global EE, for the $K$ -user interference channel. We focus on the sing
Externí odkaz:
https://doaj.org/article/93f14335475d49b08c5f487329ec45cf
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2020, Iss 1, Pp 1-16 (2020)
Abstract In this paper, we present an experimental evaluation of the performance benefits provided by flexible duplexing, an access technique that allows uplink and downlink cells to coexist within the same time-frequency resource blocks. In order to
Externí odkaz:
https://doaj.org/article/0a06b2904f7a45a6a2b1c77d25cf8b2e
Publikováno v:
Entropy, Vol 21, Iss 10, p 922 (2019)
This paper studies the performance of improper Gaussian signaling (IGS) over a 2-user Rayleigh single-input single-output (SISO) interference channel, treating interference as noise. We assume that the receivers have perfect channel state information
Externí odkaz:
https://doaj.org/article/5a1412fccceb4df4900449ca94228c01
Publikováno v:
Entropy, Vol 20, Iss 1, p 45 (2018)
Non-circular or improper Gaussian signaling has proven beneficial in several interference-limited wireless networks. However, all implementable coding schemes are based on finite discrete constellations rather than Gaussian signals. In this paper, we
Externí odkaz:
https://doaj.org/article/069f224e252142218bcafb1921e55208
Autor:
Diego Cuevas, Javier Álvarez-Vizoso, Carlos Beltrán, Ignacio Santamaria, Vít Tuček, Gunnar Peters
Publikováno v:
IEEE Transactions on Communications, 2023, 71(4), 1940-1952
In this paper, we propose an algorithm for designing unstructured Grassmannian constellations for noncoherent multiple-input multiple-output (MIMO) communications over Rayleigh block-fading channels. Unlike the majority of existing unitary space-time
Publikováno v:
IEEE Transactions on Signal Processing, 2023, 71, 963-978
In this paper, we study the performance of reconfigurable intelligent surfaces (RISs) in a multicell broadcast channel (BC) that employs improper Gaussian signaling (IGS) jointly with non-orthogonal multiple access (NOMA) to optimize either the minim
Autor:
Javier Álvarez-Vizoso, Diego Cuevas, Carlos Beltrán, Ignacio Santamaria, Vít Tuček, Gunnar Peters
Publikováno v:
ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP).
We address the problem of interference leakage (IL) minimization in the $K$-user multiple-input multiple-output (MIMO) interference channel (IC) assisted by a reconfigurable intelligent surface (RIS). We describe an iterative algorithm based on block
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd859f73034bcd42c90b80f6e477aa58
Autor:
Diego Cuevas, Javier Alvarez-Vizoso, Carlos Beltran, Ignacio Santamaria, Vit Tucek, Gunnar Peters
Publikováno v:
IEEE Global Communications Conference (GLOBECOM): proceedings, Rio de Janeiro, Brazil, 2022, 2394-2399
In this paper, we propose a new structured Grassmannian constellation for noncoherent communications over single-input multiple-output (SIMO) Rayleigh block-fading channels. The constellation, which we call Grass-Lattice, is based on a measure preser