| 1. |
- Lysko, Albert A., et al.
(författare)
-
First Large TV White Spaces Trial in South Africa : A Brief Overview
- 2014
-
Ingår i: 2014 6th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT). - : Institute of Electrical and Electronics Engineers (IEEE). - 9781479952915 ; , s. 407-414
-
Konferensbidrag (refereegranskat)abstract
- The paper overviews African first of the really large scale trials of television (TV) white space (TVWS) technology and white space devices (WSDs) designed to co-use the frequency spectrum allocated to TV broadcasting. The WSD obtains information about availability of the spectrum in a particular area for a particular period of time from a geolocation spectrum database (GLSD). The GLSD bases its estimations about the availability on stored information about primary users/transmitters in the area, propagation prediction algorithms and local spectrum management regulations. As the overall system is fairly complex and new, extensive testing and trials are required to prove its functionality and compatibility with existing users of the spectrum. Some of the experiences, specifically those from the largest in Africa TVWS trial providing Internet to 10 large schools, held in Tygerberg, South Africa, and conclusions on testing of WSD and use of white space are overviewed.
|
|
| 2. |
- Olwal, Thomas Otieno, et al.
(författare)
-
The eCOMBAT : Energy Consumption Monitoring Tool for Battery Powered Communication Device
- 2013
-
Ingår i: AFRICON, 2013. - : Institute of Electrical and Electronics Engineers (IEEE). - 9781467359405 ; , s. 453-457
-
Konferensbidrag (refereegranskat)abstract
- The ever rising demand for energy all over the world, following the dwindling of the fossil fuel resources and adverse effects on the climate change, has compelled the need to save energy and lower the cost of energy utilization in the wireless computing, communication and networking applications. One of the best ways to obtain energy-efficient communication and networking is to invest in the renewable energy sources to charge batteries for communication devices and to develop smart energy consumption monitoring tools. As a result, this paper presents an energy monitoring software tool hereby referred to as the 'eCOMBAT' which is aimed at getting real-time information on the quantity of energy consumed by the communication and networking device. The knowledge of such data on time may enable the device user to reduce energy consumption thereby lowering the CO2 emissions into the environment. This paper proposes an integrated battery's discharge and device's energy consumption model; the description of the developed tool and experimental results of the tool obtained via a user friendly and well designed graphic user interface (GUI).
|
|
