Browsing by Keywords "Beamforming"
Now showing items 1-5 of 5
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Cooperative precoding and artificial noise design for security over interference channels
(Institute of Electrical and Electronics Engineers Inc., 2015)We focus on linear precoding strategies as a physical layer technique for providing security in Gaussian interference channels. We consider an artificial noise aided scheme where transmitters may broadcast noise in addition ... -
Downlink beamforming under individual SINR and per antenna power constraints
(2007)In this paper we consider the problem of finding the optimum beamforming vectors for the downlink of a multiuser system, where there are individual signal to interference plus noise ratio (SINR) targets for each user. ... -
The fractional fourier transform and its applications to image representation and beamforming
(2003)The ath order fractional Fourier transform operator is the ath power of the ordinary Fourier transform operator. We provide a brief introduction to the fractional Fourier transform, discuss some of its more important ... -
Structuring research on conformal antennas a European collaboration
(2007)The topic of this paper is the work carried out within work package 2.4-3 of the EU network "antenna centre of excellence" (ACE). This work package is concerned with structuring research on conformal antennas. In particular, ... -
Wide-angle reflection-mode spatial filtering and splitting with photonic crystal gratings and single-layer rod gratings
(Optical Society of American (OSA), 2014)New diffractive optical elements offering a frequency tolerant, very efficient, high-pass and bandpass spatial filtering over a broad range of incidence angles are demonstrated by numerical simulations. The device operates ...
