A VHDL-AMS simulation environment for an UWB impulse radio transceiver

Dept. of Electron., Politec. di Torino, Turin
Circuits and Systems I: Regular Papers, IEEE Transactions on (Impact Factor: 2.4). 07/2008; 55(5):1368 - 1381. DOI: 10.1109/TCSI.2008.916402
Source: IEEE Xplore


Ultrawideband (UWB) communication based on the impulse radio paradigm is becoming increasingly popular. According to the IEEE 802.15 WPAN low rate alternative PHY Task Group 4a, UWB will play a major role in localization applications, due to the high time resolution of UWB signals which allow accurate indirect measurements of distance between transceivers. Key for the successful implementation of UWB transceivers is the level of integration that will be reached, for which a simulation environment that helps take appropriate design decisions is crucial. Owing to this motivation, in this paper we propose a multiresolution UWB simulation environment based on the VHDL-AMS hardware description language, along with a proper methodology which helps tackle the complexity of designing a mixed-signal UWB system-on-chip. We applied the methodology and used the simulation environment for the specification and design of an UWB transceiver based on the energy detection principle. As a by-product, simulation results show the effectiveness of UWB in the so-called ranging application, that is the accurate evaluation of the distance between a couple of transceivers using the two-way-ranging method.

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Available from: Mario Roberto Casu, May 01, 2013
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    • "So far, the technique has been demonstrated using bulky RF apparatus (e.g., a network analyzer connected to antennas placed around the patient's breast) and standard general purpose processors for the elaboration of the UWB signals and the generation of 2D or 3D maps of the reflected energy. Our aim is to demonstrate the feasibility of an integrated and compact system, which we outline in Section 2. Our previous works were focused on the UWB probe system, particularly on the transmitter and the receiver [5] [6] [7] [8]. Here, we focus instead on the processing part, which we refer to as Imaging Unit (see Figure 1). "
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    • "A multi-level approach is presented and contextualized with an implementation example, that is an energy detection receiver. This design methodology has been already presented in Crepaldi et al. (2007) and extensively used in Casu et al. (2008). In this book chapter we expand it and provide more comments and considerations based on successive works dealing with IR-UWB system-level design. "

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