Researchers have encountered variants or isoforms in microRNAs (miRNAs) before, but assumed that these variants were accidental byproducts. A recent study,…
Instead of using UV lamps as a light source to treat oil sands process affected water (OSPW) retained in tailings ponds, professors Mohamed Gamal El-Din and…
Abundant supplies of natural gas will do little to reduce harmful U.S. emissions causing climate change, according to researchers at UC Irvine, Stanford…
A significant growth is predicted for the market of flexible devices. The topic “Wearables”, namely intelligent, wearable systems with several useful and funny…
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.
The virtual water notion refers basically to the total amount of freshwater, either from rainfall or irrigation, used in the production of food commodities,…
Thanks to new LEGO®-like components developed by researchers at the USC Viterbi School of Engineering, it is now possible to build a 3-D microfluidic system…
Until fairly recently, scientists were convinced that carbonic acid (H2CO3) does not exist as a stable molecule. In the journal Angewandte Chemie, German…
Patrick McLoughlin, Secretary of State for Transport, said: “A world-class rail network needs world-class trains, and it is fantastic to see the spacious and…
From 21 to 25 October 2014, engineers of Fraunhofer IZFP in Saarbrücken provide two innovative methods on EuroBlech 2014 in Hannover which enable fast and…
In the past two decades, super-resolution microscopy has been one of the fastest evolving fields through many technical improvements. However, the development…
University of Minnesota electrical engineering researchers have developed a unique nanoscale device that for the first time demonstrates mechanical…
The research was just published in Behavioral Brain Research by scientists from the Linus Pauling Institute and College of Veterinary Medicine at Oregon State…
The Atmospheric Infrared Sounder or AIRS instrument aboard Aqua gathered infrared data on Polo on Sept. 22 at 5:11 a.m. EDT, reading cloud top temperatures.
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…
The international technology group SCHOTT offers a wide variety of architectural glasses for use in restoring old architectural monuments. The many different…
Feedback
