Browsing by Author "Lozano Solsona, Angel"

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  • Samardzija, Dragan; Lozano Solsona, Angel; Papadias, Constantinos B. (Hindawi, 2005)
    In single-user MIMO communication, the first-order throughput scaling is determined by the smallest of the number of transmit and receive antennas. This typically renders terminals the constraining bottleneck. In a multiuser ...
  • George, Geordie (Universitat Pompeu Fabra, 2017-07-07)
    Spatially proximal devices wanting to exchange information are expected to become more prevalent in wireless networks, rendering the option for direct device-to-device (D2D) communication increasingly important. On the one ...
  • George, Geordie; Lozano Solsona, Angel; Haenggi, Martin (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    We consider the number of users associating with each base station in a cellular network. Extending and unifying the characterizations for certain settings available in the literature, we derive a result that is asymptotic ...
  • Nikbakht, Rasoul; Jonsson, Anders, 1973-; Lozano Solsona, Angel (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    We present a measurement-driven algorithm to map the large-scale channel losses observed between a cellular base station and any point in its coverage area. The algorithm is on-line, meaning that it operates on continuously ...
  • George, Geordie; Venugopal, Kiran; Lozano Solsona, Angel; Heath, R. W., Jr. (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    This paper investigates the feasibility of mmWave frequencies for personal networks of wireless wearable devices in enclosed settings (e.g., commuter trains, subways, airplanes, airports, or offices). At these frequencies, ...
  • George, Geordie; Mungara, Ratheesh K.; Lozano Solsona, Angel; Haenggi, Martin (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    This paper shows how the application of stochastic geometry to the analysis of wireless networks is greatly facilitated by: (i) a clear separation of time scales; (ii) the abstraction of small-scale effects via ergodicity; ...
  • Gomà Llairo, Eduard (Universitat Pompeu Fabra, 2014-03-07)
    Residential access networks provide always-on connectivity at a constant maximum speed and constant energy consumption. However, their usage is not constant. Users combine disconnection periods with light usage periods and ...
  • Jindal, Nihar; Lozano Solsona, Angel (Institute of Electrical and Electronics Engineers (IEEE), 2010)
    The purpose of this paper is to examine (1) some of the models commonly used to represent fading,/nand (2) the information-theoretic metrics most commonly used to evaluate performance over those models. We raise the question ...
  • Boccardi, Federico; Heath, R. W., Jr.; Lozano Solsona, Angel; Marzetta, Thomas L.; Popovski, Petar (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    New research directions will lead to fundamental changes in the design of future 5th generation (5G)/ncellular networks. This paper describes five technologies that could lead to both architectural and/ncomponent disruptive ...
  • Mungara, Ratheesh K.; Thibault, Ilaria; Lozano Solsona, Angel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    This paper characterizes, through a stochastic geometry analysis, the increase in spectral efficiency that full-duplex transmission brings about in wireless networks. While, on isolated links, full-duplex promises a doubling ...
  • Lozano Solsona, Angel; Heath, R. W., Jr.; Andrews, Jeffrey G. (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Cooperation is viewed as a key ingredient for interference/nmanagement in wireless networks. This paper shows that/ncooperation has fundamental limitations. First, it is established/nthat in systems that rely on pilot-assisted ...
  • Lozano Solsona, Angel; Tulino, Antonia M.; Verdú, Sergio (Institute of Electrical and Electronics Engineers (IEEE), 2006)
    The analysis of the multiantenna capacity in the high-SNR regime has hitherto focused on the high-SNR slope (or maximum multiplexing gain), which quantifies the multiplicative /nincrease as function of the number of antennas. ...
  • Tulino, Antonia M.; Lozano Solsona, Angel; Verdú, Sergio (Institute of Electrical and Electronics Engineers (IEEE), 2005)
    This paper applies random matrix theory to obtain analytical characterizations of the capacity of correlated multiantenna channels. The analysis is not restricted to the popular separable correlation model, but rather it ...
  • George, Geordie; Lozano Solsona, Angel (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    We study the impact of signal reflections in enclosed/nwireless networks of wearable devices operating at mmWave/nfrequencies. Given the radical blockage by obstacles and people/n(including the user’s own body) at these ...
  • Lozano Solsona, Angel; Biglieri, Ezio; Alrajeh, Nabil (Institute of Electrical and Electronics Engineers (IEEE), 2012)
    A standard paradigm for the allocation of wireless resources/nin communication demands symmetry, that is, all users are/nassumed to be on equal footing and hence get equal shares of the/nsystem’s communication capabilities. ...
  • Mungara, Ratheesh K.; Lozano Solsona, Angel (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Historically unfeasible because of self-interference, full duplexing has now been experimentally demonstrated and is on the verge of commercial feasibility thanks to advances in self-interference cancellation. This will ...
  • Lozano Solsona, Angel (Institute of Electrical and Electronics Engineers (IEEE), 2008)
    Expressions relating spectral efficiency, power, and Doppler spectrum, are derived for Rayleigh-faded wireless channels with Gaussian signal transmission. No side information on the state of the channel is assumed at the ...
  • Dohler, Mischa; Heath, R. W., Jr.; Lozano Solsona, Angel; Papadias, Constantinos B.; Valenzuela, R. A. (Institute of Electrical and Electronics Engineers (IEEE), 2011)
    This article originates from a panel with the above title, held at IEEE VTC Spring 2009, in which the authors took part. The enthusiastic response it received prompted us to discuss for a wider audience whether research ...
  • Wu, Yongpeng; Wing Kwan Ng, Derrick; Wen, Chao-Kai; Schober, Robert; Lozano Solsona, Angel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    This paper investigates the design of precoders for single-user multiple-input multiple-output (MIMO) channels, and, in particular, for finite-alphabet signals. Based on an asymptotic expression for the mutual information ...
  • Wu, Yongpeng; Wen, Chao-Kai; Ng, Derrick Wing Kwan; Schober, Robert; Lozano Solsona, Angel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    In this paper, we investigate the design of multiple-input multiple-output single-user precoders for finite-alphabet signals under the premise of statistical channel-state information at the transmitter. Based on an ...