Method for High Precision Clock Synchronization in Wireless Systems with Application to Radio Navigation
Röhr S, Vossiek M, Gulden P (2007)
Publication Language: English
Publication Type: Conference contribution
Publication year: 2007
Edited Volumes: Proceedings - 2007 IEEE Radio and Wireless Symposium, RWS
Pages Range: 551-554
Conference Proceedings Title: IEEE Radio Wireless Symposium
Event location: Long Beach, USA
Abstract
In this paper we present a novel approach for high precision clock synchronization in wireless systems. A concept similar to the standard FMCW (Frequency-Modulated Continuous Wave) radar principle is used to estimate the offset in time and in frequency between two wireless communication units. The novel approach allows for a synchronization of both offsets significantly below 100 ps and 10 Hz, respectively. This highly accurate synchronization is used in a prototype system to measure the distance between wireless units similar to a secondary radar. The prototype works within the 5.8 GHz ISM-Band and uses a bandwidth of 150 MHz. With the setup presented we can measure the distance between two radio units with a standard deviation of 4 to 5 cm over a range of 200 m. This distance deviation implies a clock and center frequency synchronization of both communication modules significantly below 100 ps and 1 ppb, respectively. The broadband measurement principle is robust towards multi-path interference. It can be extended to other frequency bands and is well-suited for direct integration into communication channels and novel modulation principles such as OFDM (Orthogonal Frequency Division Multiplexing) or SC/FDE (Single Carrier transmission with Frequency Domain Equalization), e.g. for locatable WLAN (Wireless Local Area Network) devices or wireless sensor networks. ©2007 IEEE.
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APA:
Röhr, S., Vossiek, M., & Gulden, P. (2007). Method for High Precision Clock Synchronization in Wireless Systems with Application to Radio Navigation. In IEEE Radio Wireless Symposium (pp. 551-554). Long Beach, USA.
MLA:
Röhr, Sven, Martin Vossiek, and Peter Gulden. "Method for High Precision Clock Synchronization in Wireless Systems with Application to Radio Navigation." Proceedings of the 2007 IEEE Radio and Wireless Symposium, RWS, Long Beach, USA 2007. 551-554.
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