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MIMO systems with antenna selection - an overview

We consider multiple-input - multiple-output (MIMO) systems with reduced complexity. Either one, or both, link ends chose the "best" L out of N available antennas. This implies that only L instead of N transceiver chains have to be built, and also the signal processing can be simplified. We show that in ideal channels, full diversity can be achieved, and also the number of independent data streams

Bounds on the effective tensor and the structural parameters for anisotropic two-phase composite material

A new method to estimate the microstructural parameters of anisotropic twophase composite material is derived. The parameters are estimated using information from measurements or from numerical experiments. The method is used to derive new bounds on the elective tensor that incorporates information from measurements of a related parameter. These new bounds are called cross-property bounds. New tig

When the learned system is activated

This paper focuses on the discussion of the general characteristics of 12 Swedish learners’ oral production of the Chinese aspect markers le, guò, zài, and zhe. Their oral performance is discussed with respect to Krashen’s Monitor hypothesis (1978, 1981, 1987) on the role of conscious learning. The functions of the Monitor in planning, editing and correcting is discussed respectively in relation t

Robust synchronisation of unstable linear time-invariant systems

A framework based on the gap metric and integral quadratic constraints (IQCs) is developed for analysing robust synchronisation of heterogenous linear time-invariant networks. Both the agents and the communication channels are allowed to be dynamic and unstable. Structural properties of the uncertainty are described by IQCs and exploited in synchronisation analysis as a means to reduce conservatis

Properties of a Parameterized Model Reduction Method

In this contribution a recently proposed model reduction method for a class of linear time-invariant (LTI) parameterized models is investigated. The method is based on matching of the frequency response samples using the semidefinite programming methods. The main focus of this contribution is the properties of the obtained approximations. Among those properties is stability of individual LTI syste