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This paper presents a polarization-controlled active antenna applied to BAN on-body communications. A primal objective is to achieve the enhancement of signal power, not only in downlink but also in uplink dynamic channels, between an access point mounted on the wrist and a sensor module attached to various locations on a human body. The proposed antenna is comprised of two orthogonal antennas, which...
This article presents dynamic on-body radio channel modelling for ultra wideband (UWB) wireless body area network communication. The work is based on frequency domain measurements with a vector network analyzer in an anechoic chamber at a 2–8 GHz frequency band. Two planar UWB antennas were used (dipole and double loop) and they were attached in total eight on-body locations. First, the mean values,...
In this paper we introduce medium access control (MAC) protocol defined by ETSI TC (technical committee) SmartBAN (smart body area network). The key features of the protocol are a two-channel concept with different channels for data and control traffic, and a unique Multi-use Channel Access as one alternative channel access mode. The two-channel concept provides fast channel acquisition and easy Hub...
This paper presents the Bit Error Rate characteristics of Ultra Wide Band signals made by using the low pulse duty factor and spreading code in the body surface channel, body to external channel as well as multiuser multipath channel. Additionally, this paper presents the distance-mean transmitting power performances, yielded from the BER characteristics results in the body surface channel and body...
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