The initial release of LTE provided extensive support for deployment in spectrum allocations of various characteristics, with bandwidth ranging roughly from 1.3 MHz up to 20 MHz in both paired and unpaired bands. In LTE release 10 the transmission bandwidth can be further extended by means of so-called Carrier Aggregation (CA), where multiple component carriers are aggregated and jointly used f...

We experimentally study inter-modal four-wave mixing (FWM) in few-mode fibres with different phase matching properties. The possibility of transmitting two spatial modes without intermodal FWM cross-talk in the C-band is presented.

This paper provides some insights about the development and implementation of a “wide-band” group decision support system a series of case studies within the UK construction industry. The authors reflect upon the applicability of wide-band GDSS for project review and learning generation within multi-organisational groups, and describes the design, implementation and evaluation of a Cross Organi...

Conductionor valence-band discontinuities occurring at the junction of two heterogeneous semiconductors can be eliminated by appropriate doping of the inter-facial region. We show by analytic and self-consistent calculations that simultaneous modulation doping and parabolic-compositional grading result in flat band-edge potentials. The new concept is applied to distributed Bragg reflectors for ...

In the present work ferromagnetic ordering in the Hubbard model generalized by taking into account the inter-atomic exchange interaction and correlated hopping in partially filled narrow band is considered. Expressions for the magnetization and Curie temperature as functions of model parameters and band filling are obtained in the case of weak intra-atomic Coulomb interaction. Condition of ferr...

This paper deals with the inter-system interference of third generation mobile communication systems being introduced in frequency bands adjacent to the European DECT band. A method to evaluate the required minimum frequency separation (MFS) of coexisting mobile communication systems is presented. Based on this comprehensive evaluation concept, this paper discusses the required minimum frequenc...

It is shown that absorption of circularly polarized infrared radiation due to intraband (Drude-like) transitions in n-type bulk semiconductors and due to intra-subband or inter-subband transitions in quantum well (QW) structures results in a monopolar spin orientation of free electrons. Spin polarization in zinc-blende-structure based QWs is demonstrated by the observation of the spin-galvanic ...