Title :
An ultrawideband system architecture for tag based wireless sensor networks
Author :
Stoica, Lucian ; Rabbachin, Alberto ; Repo, Heikki Olavi ; Tiuraniemi, Teemu Sakari ; Oppermann, Ian
Author_Institution :
Oulu Univ., Finland
Abstract :
With the latest improvements in device size, power consumption, and communications, sensor networks are becoming increasingly more popular. There has also been a great increase in the popularity of commercial applications based on ultrawideband (UWB). Impulse radio (IR) based UWB technology utilizes noise-like signal, has potentially low complexity and low cost, is resistant to severe multipath, and has very good time domain resolution allowing for location and tracking applications. In this paper, the architecture and performance of a noncoherent low complexity UWB impulse radio based transceiver designed for low data rate, low cost sensor network applications is presented. The UWB-IR transmitter is based on a delay locked loop (DLL) and UWB monocycle pulse generator. The UWB-IR receiver utilises a noncoherent, energy detection based approach, which makes it largely independent of the shape of the transmit waveform and robust to multipath channels. The test circuits are designed for 0.35 μm SiGe BiCMOS technology. This paper presents system simulations results as well as the performance of key functional blocks of the designed UWB application specific integrated circuit (ASIC) transceiver architecture. The simulated power consumption of UWB-IR transceiver circuits is 136 mW with 100% duty cycle with a 3.3 V power supply.
Keywords :
BiCMOS integrated circuits; application specific integrated circuits; delay lock loops; integrated circuit design; multipath channels; pulse generators; radio transmitters; ultra wideband communication; wireless sensor networks; 0.35 mum; 3.3 V; BiCMOS technology; UWB application specific integrated circuit transceiver; UWB monocycle pulse generator; UWB-IR transmitter; delay locked loop; energy detection; impulse radio; multipath channels; noise-like signal; tag based wireless sensor networks; test circuits; time domain resolution; ultrawideband system; Application specific integrated circuits; Circuit simulation; Circuit testing; Costs; Energy consumption; Radio transmitters; Signal resolution; Transceivers; Ultra wideband technology; Wireless sensor networks; SiGe BiCMOS; Ultrawideband-impulse radio (UWB-IR); noncoherent low complexity transceiver architecture; sensor networks;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2005.855501