Research Article
Off-body Channel Measurements at 2.4 GHz and 868 MHz in an Indoor Environment
@INPROCEEDINGS{10.4108/icst.bodynets.2014.257000, author={Evangelos Mellios and Angelos Goulianos and Sema Dumanli and Geoffrey Hilton and Robert Piechocki and Ian Craddock}, title={Off-body Channel Measurements at 2.4 GHz and 868 MHz in an Indoor Environment}, proceedings={9th International Conference on Body Area Networks}, publisher={ICST}, proceedings_a={BODYNETS}, year={2014}, month={11}, keywords={wbans off-body channel measurements 24 ghz band 868 mhz band on-body antennas indoor propagation}, doi={10.4108/icst.bodynets.2014.257000} }- Evangelos Mellios
Angelos Goulianos
Sema Dumanli
Geoffrey Hilton
Robert Piechocki
Ian Craddock
Year: 2014
Off-body Channel Measurements at 2.4 GHz and 868 MHz in an Indoor Environment
BODYNETS
ACM
DOI: 10.4108/icst.bodynets.2014.257000
Abstract
This paper presents an off-body wireless channel measurement campaign at 2.4 GHz and 868 MHz in an indoor laboratory environment. The performance of different 2.4 GHz antennas is evaluated and it is found that chest-mounted directional patch antennas result in an average of 4 dB higher channel gain than horizontally polarised omnidirectional ones. Comparison of propagation at 2.4 GHz and at 868 MHz shows that when omnidirectional on-body antennas are used in both bands, the lower frequency results in an average of 5 dB higher channel gain. However, when directional patches are employed at 2.4 GHz, the advantage of the 868 MHz is only about 1 dB. Finally, a measurement-based channel model suitable for narrowband system-level simulations is presented.
