Mats Bengtsson

TL;DR: It is demonstrated that convex optimization provides an indispensable set of tools for beamforming, enabling rigorous formulation and effective solution of both long-standing and emerging design problems.

TL;DR: In this paper, the authors propose to design beamforming vectors (that describe the amplitudes and phases) to have large inner products with the vectors describing the intended channels and small inner products for non-intended user channels.

TL;DR: The present study showed that mechanisms involved in referred pain, temporal summation, muscular hyperalgesia, and muscle pain at rest were attenuated by the NMDA‐antagonist in FMS patients, and suggested a link between central hyperexcitability and the mechanisms for facilitated referred pain and temporal summary in a sub‐group of the fibromyalgia syndrome patients.

TL;DR: There is a state of central hyperexcitability in the nociceptive system in FM that can be revealed by excitation of intramuscular nocICEptors in a muscle with no spontaneous pain.

TL;DR: A previously proposed Kronecker-structure-based narrow-band model for nonline-of-sight (NLoS) indoor multiple-input-multiple-output (MIMO) radio channels based on 5.2-GHz indoor MIMO channel measurements is verified and it is shown that the MIMo channel covariance matrix can be well approximated by the Kr onecker product of the covariance matrices.