The big question is, how we will meet the demands of more and more computing power, & amp; nbsp; while we must limit our electricity consumption, says Efrain Zenteno, researchers at the University of Gävle.
We & amp; nbsp; live in a time when we require more and more computing power. We have become accustomed to & amp; nbsp; to talk unlimited and even watching video footage of our & amp; nbsp; mobile phones. This means a huge need for data traffic for wireless communication.
Linked to this are another seemingly contradictory requirements, which is very stressful for today’s world. The need to reduce electricity consumption.
– Both are needed, but we must start paying the bill for our mobile phones. We need to develop more effective techniques and do it & amp; nbsp; possible to use green electricity, says Efrain Zenteno.
We also want cheaper and cheaper technology. Better TV at a much lower price, faster and cheaper mobile telephony. This has also become a matter of justice when so many more people now have access to wireless data services.
– In many places, this is considered as a human right, level with the right to speak freely. The idea is to have a very inexpensive technology that can & amp; nbsp; used by all people.
– The problem is that such low-cost technologies have a tendency to not be perfect, it can mean poor image / bad coverage and more.
– We can now show that there exist several techniques that would allow the use of small cheap, powerful computers to these errors generated by cheap software.
The computers have become so much cheaper and more powerful, they double their capacity on a regular basis.
– This will help others to develop systems that are very cheap and also effective.
The study is not limited to only mobile communications, theoretically match multiple technologies. Therefore, the satellite technology studied in the same way as a wireless mobile communication.
Here it is how to increase the satellites life and reduce their energy consumption. And how to get into more TV channels in the satellites. The satellites are technically interesting because they are very specific.
They use not so much energy because they operate with a digital signal that is not as energy intensive. The mobile wireless traffic however, must transmit an analog signal to the transmitters / antennas, and this costs a lot of energy.
– It is extremely expensive to transmit and operate satellites. So anything that can be done to maximize their lifespan and usage becomes truly profitable.
– Satellites have no energy resources in addition to those they had with them, they have to live with what they have.
This is a huge area of research in which scientists worldwide are trying to reach the same goal. All the time you can see research papers containing small steps in the direction of more mature systems.
My contribution is such a small step on the road says Efrain Zenteno.
Efrain Efrain Zentenokommer from Arequipa, a city in southern Peru near the border with Chile.
– much hotter than here, even though Arequipa lies at an altitude of 2400 meters above sea level.
Förmånga years ago, he came to the University Gävle as an exchange student. Home university at the time, a collaboration with the University of Gävle. It was 2006, and he read as a master in electronics.
– My brother had been studying in Canada, but I am the first in our family to go so far. Sweden is not a common destination for students in Peru.
– It has been an amazing experience for me to study at the University of Gävle, but also to gain an insight into how society works Sweden.
He feels that Sweden has come a long way in development and that everyone is given a chance to contribute to society’s development. One example in many places in the world should try to follow.
– Sweden is always in the top in terms of the willingness to embrace and adopt new technology, even compared to the US. And this I think is a big reason why Sweden has reached a leading position in technology development.
I believe you were first with 4G and you are so talented engineers who are also good at bringing out the technology to an interested & amp; nbsp; general.
– In the future I want to continue to develop and disseminate my research. I will look for me there, where the possibility exists.
Efrain Zentano defended his thesis 
Digital Compensation Techniques for Transmitters inWireless Communications Networks at KTH on 15 June.
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