Abstract
In this paper, on-body radio channel performance of a compact ultra wideband (UWB) antenna is investigated for body-centric wireless communications. Measurement campaigns were first done in the chamber and then repeated in an indoor environment for comparison. The path loss parameter for eight different on-body radio channels has been characterized and analyzed. In addition, the path loss was modeled as a function of distance for 34 different receiver locations for propagation along the front part of the body. Results and analysis show that, compared with anechoic chamber, a reduction of 16.34% path loss exponent is noticed in indoor environment. The antenna shows very good on-body radio channel performance and will be a suitable candidate for future efficient and reliable body-centric wireless communications.
Highlights
Ultra wideband communication is an exciting and innovative technology which has become a very promising candidate for future short-range indoor high-speed data communication [1]
The major plan of this study is to investigate and analyze the on-body radio channels performance of the abovementioned compact ultra wideband (UWB) antenna
Both in the chamber and in an indoor, the highest path loss is noticed for the transmitter to right-wrist link, while the lowest is noticed for the transmitter to left-chest and left-ankle links
Summary
Ultra wideband communication is an exciting and innovative technology which has become a very promising candidate for future short-range indoor high-speed data communication [1]. (2015) Experimental Study of On-Body Radio Channel Performance of a Compact Ultra Wideband Antenna. The design of a power-efficient and reliable on-body communication system requires suitable antennas which require accurate understanding of the human body effects on the antenna performance parameters and radio propagation channels [8]. In [9]-[16], on-body radio channel characterization was presented at the unlicensed frequency band of 2.45 GHz. In [3] [17]-[22], ultra wideband (UWB) on-body propagation channels have been characterized and their behavior has been investigated in indoor and chamber for stand-still, various postures and dynamic human body. In this paper measurement campaigns were performed in the chamber and indoor environment using a compact printed quasi-self-complementary ultra wideband (UWB) antenna. The major plan of this study is to investigate and analyze the on-body radio channels performance of the abovementioned compact UWB antenna. The rest of the paper is organized as follows: Section 2 illustrates the measurement setup and the antenna used for this study; Section 3 presents measurement results, radio channel parameters and modelling aspects; and Section 4 draws the main conclusion
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