“The discovery is a significant milepost on the road to eventually analyzing the atmospheric composition of smaller, rocky planets more like Earth,” said John…

Electricity and magnetism rule our digital world. Semiconductors process electrical information, while magnetic materials enable long-term data storage. A…

“Texting with either a smartphone or Glass will cause distraction and should be avoided while driving” said UCF researcher Ben Sawyer. “Glass did help drivers…

Astronomers using data from the NASA/ESA Hubble Space Telescope, the Spitzer Space Telescope, and the Kepler Space Telescope have discovered clear skies and…

Iron-poor stars provide insight about the very early universe where the first generation of stars and galaxies formed. The recent discovery of the most…

Over the past 20 years, a strange idea called a “weak value” has taken root in quantum information science.

What's rocky, about a mile wide, orbits between Mars and Jupiter and poses no threat to Earth?

Researchers from the Max Planck Institute for Polymer Research in Mainz, jointly with scientists from Switzerland and Spain, have investigated the working…

The massive transfer of data over the Internet that is vital to today’s economy in our information society would not be possible without the crucial role…

The experimental work is described in a paper to be published in the Sept. 24 Physical Review Letters online. A theoretical PRL paper to be published on the…

However, a research team from Gothenburg, Sweden, has now been able to create an AI program that can learn how to solve problems in many different areas. The…

What's coming next, say University of Washington researchers, is the ability to interact with our devices not just with touchscreens, but through gestures in…

T Tauri stars are the infant versions of stars like our Sun. They are relatively normal, medium-size stars that are surrounded by the raw materials to build…

University of Minnesota electrical engineering researchers have developed a unique nanoscale device that for the first time demonstrates mechanical…

Interference is one of the most performance-limiting factors in wireless communications systems. The standard of 3GPP Long Term Evolution (LTE) employs Orthogonal Frequency Division Multiple Access (OFDMA) in the downlink, where orthogonality between different users within one cell can be guaranteed by scheduling simultaneously in frequency and time domain. However, LTE is designed to consider a frequency reuse factor of one between adjacent cells leading to strong inter-cell-interference between adjacent cells.
Users especially located at cell edges may experience strong interference by transmissions from neighboring cells, scheduling their users at the same physical resource. Thus, intercell interference coordination (ICIC) techniques are an indispensable and widely discussed topic in the standardization process of LTE.
Scientists at the Department of Communications Engineering at the University of Bremen developed a coordination scheme to improve the reallocation procedure of succeeding pre-coding matrices, while avoiding sudden change in the inter-cell interference experienced at neighboring cells. To do so, they use the fact that different matrix combinations exhibit lower variations in the inter-cell-interference than others. The advantage of this approach is that the variation of the interference level is only determined by the two pre-coding matrices of the allocation, and not by further network, mobile devices or transmission specific parameters
This will lead to significant improvement on system performance on mobile devices to an edge of a cell or located next to base stations as well of base stations without impact on LTE standard. Besides, network stability is also improved.
Up to now, simulations of the computer-implemented method are successful.

Today’s robots usually see the world with cameras and lasers, which have difficulty reliably recognizing things and can miss objects that are hidden in…