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Visualitza Recerca: articles, congressos, llibres per matèria "Spectral efficiency"

Ara mostrant els elements 1-8 de 8

A unified treatment of optimum pilot overhead in multipath fading channels

Jindal, Nihar; Lozano Solsona, Angel (Institute of Electrical and Electronics Engineers (IEEE), 2010)

The optimization of the pilot overhead in single-user wireless fading channels is investigated, and the dependence of this overhead on various system parameters of interest (e.g., fading rate, signal-to-noise ratio) is ...
A WiMAX-based implementation of network MIMO for indoor wireless systems

Venkatesan, Sivarama; Huang, Howard C.; Lozano Solsona, Angel; Valenzuela, R. A. (Hindawi, 2009)

It is well known that multiple-input multiple-output (MIMO) techniques can bring numerous benefits, such as higher spectral efficiency, to point-to-point wireless links. More recently, there has been interest in extending ...
An analytical framework for device-to-device communication in cellular networks

George, Geordie; Mungara, Ratheesh K.; Lozano Solsona, Angel (Institute of Electrical and Electronics Engineers (IEEE), 2015)

This paper presents a framework that enables/ncharacterizing analytically the spectral efficiency achievable by/nD2D (device-to-device) communication integrated with a cellular/nnetwork. This framework is based on a ...
Analysis of UAV communications in cell-free massive MIMO systems

D’Andrea, Carmen; García Rodríguez, Adrián; Geraci, Giovanni; Galati Giordano, Lorenzo; Buzzi, Stefano (Institute of Electrical and Electronics Engineers (IEEE), 2020)

We study support for unmanned aerial vehicle (UAV) communications through a cell-freemassive MIMO architecture, wherein a large number of access points (APs) is deployed in place of largeco-located massive MIMO arrays. We ...
Cell-free massive MIMO for UAV communications

D’Andrea, Carmen; García Rodríguez, Adrián; Geraci, Giovanni; Galati Giordano, Lorenzo; Buzzi, Stefano (Institute of Electrical and Electronics Engineers, 2019)

We study support for unmanned aerial vehicle (UAV) communications through a cell-free massive MIMO ar- chitecture. Under the general assumption that the propagation channel between the mobile stations, either UAVs or ground ...
Full-duplex MIMO in cellular networks: system-level performance

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 ...
Per-antenna rate and power control for MIMO layered architectures in the low- and high-power regimes

Lozano Solsona, Angel (Institute of Electrical and Electronics Engineers (IEEE), 2010)

In a MIMO layered architecture, several codewords/nare transmitted from a multiplicity of antennas. Although the/nspectral efficiency is maximized if the rates of these codewords/nare separately controlled, the feedback ...
System-level performance of interference alignment

Mungara, Ratheesh K.; Morales-Jiménez, David; Lozano Solsona, Angel (Institute of Electrical and Electronics Engineers (IEEE), 2015)

Capitalizing on the analytical potency of stochastic/ngeometry and on some new ideas to model intercell interference,/nthis paper presents analytical expressions that enable quantifying/nthe spectral efficiency of IA ...