Biomedical Engineering Reference
In-Depth Information
To avoid the use of power hungry UWB receivers and to increase the reliability
of data delivery, a MAC protocol that uses a narrow band feedback path in order to
the introduction of the narrowband feedback system, it is possible to achieve a
more dynamic power reduction scheme that involves cross layer designs. The use
of a narrow band receiver at the sensor node end leads to simplicity of circuit
design by reducing the computational complexity at the sensor node end. A dual
band sensor node provides the opportunity to communicate simultaneously in the
up-link and down-link reducing the communication delay. By using a narrow band
receiver, in combination with a suitable MAC protocol, it is possible to achieve
more dynamic network configurations; hence enable the employment of higher
number of sensor nodes as well as dynamic transmit power configurations to
compensate for the varying channel conditions. A narrow band receiver also
provides the opportunity to manipulate various physical layer properties of UWB,
such as number of IR-UWB pulses sent per data bit and duty cycle of data
transmission at the sensor node; hence provide a power efficient way of controlling
the performance of the network.
References
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ultra-wideband (UWB) based wireless body area networks (WBAN), ultra-wideband and
60 GHz communications for biomedical applications (Springer, 2013) ISBN: 978-1-4614-
8895-8
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