Experimental characterisation of ultra‐wideband off‐body radio channels considering antenna effects. Issue 5 (1st April 2013)

• Record Type: Journal Article
• Authors: Khan, Mohammad Monirujjaman; Abbasi, Qammer Hussain; Alomainy, Akram; Hao, Yang; Parini, Clive
• Is Part Of: IET microwaves, antennas & propagation. Volume 7:Issue 5(2013)
• Page Start: 370
• Page End: 380
• Publication Date: 2013-04-01
• Subjects: antenna feeds -- biomedical communication -- coplanar waveguides -- log normal distribution -- radiowave propagation -- receiving antennas -- slot antennas -- statistical analysis -- ultra wideband antennas -- ultra wideband communication -- wireless channels; ultrawideband off‐body radio channels -- antenna effects -- UWB off‐body radio propagation channel -- body‐centric wireless communication -- indoor environment -- active UWB wireless tags -- receiver antennas -- small form factor antenna -- SFF antenna -- miniaturised coplanar waveguide‐fed tapered slot antenna -- statistical analysis -- radio channel behaviour -- log normal distribution -- off‐body propagation channel path‐loss models -- second‐order channel parameters -- fade probability -- level‐crossing rate -- average fade duration; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2011.0560
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : Experimental investigation to characterise the ultra‐wideband (UWB) off‐body radio propagation channel for body‐centric wireless communication is presented. The measurements were performed in an indoor environment using active UWB wireless tags. Two different kinds of receiver antennas have been used; namely a small form factor (SFF) antenna and miniaturised co‐planar waveguide‐fed tapered slot antenna to investigate their effects on the radio channel behaviour. Statistical analysis is performed on the radio channel data and the results demonstrated that the lognormal distribution provides the best fit for off‐body propagation channel path‐loss models. Comparison of results shows that a reduction of 29% path‐loss exponent is noticed for the SFF antenna. In addition to this, second‐order channel parameters such as fade probability, level‐crossing rate and average fade duration are also investigated and compared for the two antennas.