Abstract
Recently, many studies propose the use of ultra-wideband technology for passive and active radio frequency identification systems as well as for wireless sensor networks due to its numerous advantages. By harvesting these advantages of IR-UWB technology at the physical-layer design, this paper proposes that a cross layer architecture platform can be considered as a good integrator for different wireless short-ranges indoor protocols into a universal smart wireless-tagged architecture with new promising applications in cognitive radio for future applications. Adaptive transmission algorithms have been studied to show the trade-off between different specific QoS requirements, transmission rates and distances at the physical layer level and this type of dynamic optimization and reconfiguration leads to the cross-layer design proposal in the paper. Studies from both theoretical simulation and statistical indoor environments experiments are considered as a proof of concept for the proposed architecture.
Highlights
The radio frequency identification (RFID) technique, as a form of wireless communication system, is currently gaining more interest in the academia and in industries
As RFID applications have become increasingly prevalent in daily life, privacy and security issues become more critical for individuals and organizations
Since there is a lack of maturity and highlevel integration with RFID and other wireless networks, such as Wi-Fi, wireless sensor network (WSN) and WAN, this causes the actual shortfall of industrial adoption
Summary
The radio frequency identification (RFID) technique, as a form of wireless communication system, is currently gaining more interest in the academia and in industries. Impulse-based ultra-wideband radio technology (IR-UWB) for low data rates wireless sensors, can be utilized for future radio frequency identifications (RFID) and wireless sensor network (WSN) architectures [4] and can be considered as good integrator for both of them This recent technique demonstrates the advantages of achieving higher data rates, facilitating the possibility of operation ranges to reach a few hundred meters with more accurate position estimation (centimeter accuracy), incurring very low energy per bit with low cost of hardware implementation. The adjustable parameters can support different data rates (by tuning the parameters of different modulations and signal shapes) and different spectrum occupation (by adjusting the center of the frequency and the bandwidth), this technique ensures adaptive multiple access and security of information All these advantages of IR-UWB over WSN and RFID integrating both of them in one infrastructure consider as a good candidate for future cognitive radio nodes [5]-[8].
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