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UWB Localization (DistCom/Distag)

Development of an UWB transceiver for high-precision indoor localization applications

The Objective

The goal of this project is to utilize the impulse radio UWB technique for data transmission as well as for high-precision indoor localization at the same time. For this purpose, an UWB transceiver is required, which serves as the heart of radio modules allowing a ranging accuracy in decimeter range. This kind of radio transmission is based extremely short impulses with duration of about 1 nanosecond. The frequency spectrum is chosen in the range of 6.0 to 8.5 GHz in accordance to the European regulation of UWB usage (ECC frequency mask). The DistCom modules are dedicated for wireless sensor applications in industrial and logistics environment. Therefore, ambitious requirements are determined in terms of robustness, latency, communication range, and ranging accuracy.

 

IHP’s Contribution

IHP is designing the RF subsystem including the IR-UWB receiver and transmitter chip. The transmitter generates RF impulses with an average repetition rate of 56.64 MHz deploying pulse position modulation and BPSK modulation. The receiver sensitivity is expected to be -70 dBm and a dynamic range for the RF input signal of at least 50 dB shall be achieved. An important feature of the chipset is the implementation of a time-of-flight measurement unit intended for localization applications. It allows the acquisition of a time stamp at the moment of the rising edge of a received impulse. The minimum step size of the time measurement is 275 picoseconds corresponding to a flight distance of about 8 centimeter. The chipset is manufactured in IHP's 0.25 µm low-cost SiGe:C BiCMOS technology SGB25V.

Funding

 

This research is funded by the “Bundesministerium für Wirtschaft und Technologie”, in the framework of the “Zentrales Innovationsprogramm Mittelstand (ZIM)“.

 

Project Partners

 

IMST GmbH, Kamp-Lintfort

 

 

Selected Publications

[1] G. Fischer, O. Klymenko, D. Martynenko, H. Luediger, “An Impulse Radio UWB Transceiver with High-Precision TOA Measurement Unit,” 2010 International Conference on Indoor Positioning and Indoor Navigation (IPIN). Zuerich, Switzerland, Sep. 2010.

[2] D. Martynenko, G. Fischer, O. Klymenko, “A High Band Impulse Radio UWB Transmitter for Communication and Localization,” 2009 IEEE International Conference on Ultra-Wideband (ICUWB), Vancouver, Canada, Sep. 2009.

[3] O. Klymenko, G. Fischer, D. Martynenko, “A High Band Non-Coherent Impulse Radio UWB Receiver,” 2008 IEEE International Conference on Ultra-Wideband (ICUWB), Hannover, Germany, Sep. 2008.

 

External Links

Das Gebäude und die Infrastruktur des IHP wurden finanziert vom Europäischen Fonds für regionale Entwicklung, von der Bundesregierung und vom Land Brandenburg.