e-Infrastructure and e-Services for Developing Countries. 8th International Conference, AFRICOMM 2016, Ouagadougou, Burkina Faso, December 6-7, 2016, Proceedings

Research Article

A Correlation Between RSSI and Height in UHF Band and Comparison of Geolocation Spectrum Database View of TVWS with Ground Truth

  • @INPROCEEDINGS{10.1007/978-3-319-66742-3_23,
        author={Richard Maliwatu and Albert Lysko and David Johnson and Senka Hadzic},
        title={A Correlation Between RSSI and Height in UHF Band and Comparison of Geolocation Spectrum Database View of TVWS with Ground Truth},
        proceedings={e-Infrastructure and e-Services for Developing Countries. 8th International Conference, AFRICOMM 2016, Ouagadougou, Burkina Faso, December 6-7, 2016, Proceedings},
        proceedings_a={AFRICOMM},
        year={2017},
        month={10},
        keywords={UHF television white space RSSI vs. antenna Height Geolocation spectrum database Received signal},
        doi={10.1007/978-3-319-66742-3_23}
    }
    
  • Richard Maliwatu
    Albert Lysko
    David Johnson
    Senka Hadzic
    Year: 2017
    A Correlation Between RSSI and Height in UHF Band and Comparison of Geolocation Spectrum Database View of TVWS with Ground Truth
    AFRICOMM
    Springer
    DOI: 10.1007/978-3-319-66742-3_23
Richard Maliwatu1,*, Albert Lysko2,*, David Johnson2,*, Senka Hadzic1,*
  • 1: University of Cape Town
  • 2: Meraka Institute
*Contact email: rmaliwatu@cs.uct.ac.za, alysko@csir.co.za, djohnson@csir.co.za, shadzic@cs.uct.ac.za

Abstract

An investigation into the Received Signal Strength Indicator (RSSI) dependency on receiver antenna height in UHF band is conducted. The results show a high correlation between RSSI and height on channels with high signal strength. There is approximately 2.5 dBm RSSI gain per 1 m increase in height above ground up to 8.5 m. From 8.5 m to 12 m, there is no consistent observable increase in RSSI. Furthermore, the geolocation spectrum database’s (GLSD) view of white space in the television band is compared with the ground truth. Results show signal presence on some of the channels indicated free by the spectrum database. These findings imply that an increase in transmission range of UHF links can be achieved by increasing receiver height. White space devices using A GLSD should additionally require spectrum scanning to determine clear channels.