By continously adapting the receiver settings of a mobile phone to the current conditions, the advantage is twofold; facing bad reception, the connection can be improved while in good conditions, the energy consumption can be reduced. This is possible by an automatic controller developed by Lodewijk Smit of the University of Twente in The Netherlands. Smit did his PhD work on this, within the Centre of Telematics and Information Technology (CTIT).
The mobile connection can be optimized by frequently evaluating the quality and adapting the receiver of the mobile device to this level. The conditions are continuously changing. Hence, the quality of the reception is fluctuating. Modern phones will adapt to the service level required (speech, data or video) and not to the reception quality.
By using the advanced control method Smit has developed, the amount of calculation the receiver has to perform, can be decreased drastically. “In this way, it doesn’t have to work harder than strictly necessary. In bad conditions, this means using all resources for the actual signal, thus saving energy. In fair or good conditions, this means saving the battery. This is a major advantage as well. New applications put a growing strain on the battery, while the battery is not improving at the same speed.”
Lodewijk Smit started with a method for evaluating the quality in a simple and accurate way. Current methods send a lot of information over the mobile network, apart from the actual data, before quality level is determined. Smits method decreases this amount of overhead. He calculates a statistical analysis of the data received, to evaluate the probability that a sent symbol is received in the wrong way. The receiver can then be adjusted until the error level is obtained. A limited number of remaining errors is acceptable, as there are standard error-correcting codes in wireless and mobile communication.
Wiebe van der Veen | alfa
Product placement: Only brands placed very prominently benefit from 3D technology
07.07.2016 | Alpen-Adria-Universität Klagenfurt
NASA Goddard network maintains communications from space to ground
02.03.2016 | NASA/Goddard Space Flight Center
Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.
This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...
Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion
Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
26.10.2016 | Awards Funding
26.10.2016 | Power and Electrical Engineering
26.10.2016 | Health and Medicine