Browse > Article
http://dx.doi.org/10.12673/jant.2014.18.5.476

Design of Time Synchronizer for Advanced LR-WPAN Systems  

Park, Mincheol (School of Electronics, Telecommunication and Computer Eng., Korea Aerospace University)
Lee, Dongchan (School of Electronics, Telecommunication and Computer Eng., Korea Aerospace University)
Jang, Soohyun (School of Electronics, Telecommunication and Computer Eng., Korea Aerospace University)
Jung, Yunho (School of Electronics, Telecommunication and Computer Eng., Korea Aerospace University)
Publication Information
Journal of Advanced Navigation Technology / v.18, no.5, 2014 , pp. 476-482 More about this Journal
Abstract
Recently, with the growth of various sensor applications, the need of wireless communication systems which can support variable data rate is increasing. IEEE 802.15.4 LR-WPAN system using 2.45 GHz frequency band is very popular for the sensor applications. However, since LR-WPAN only supports the data rate of 250 kbps, it has a limit to be applied to various sensor networks. Therefore, we define the preamble structure which can support the data rates of 31.25 kbps, 62.5 kbps, 125 kbps, and present the low-complexity hardware architecture for time synchronizer based on double-correlation algorithm which can resist the CFO (carrier frequency offset). Implementation results show that the proposed time synchronizer include the logic slice of 18.36 K and four DSP48s, which are reduced at the rate of 79.1% and 99.4%, respectively, compared with existing architecture.
Keywords
Double-correlation; IEEE 802.15.4; LR-WPAN; Time synchronizer;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Jong-Am Jun, "IoT device product and trend of technology," Korea Institute of Communications and Information Sciences, Vol. 31, No. 4, pp. 44-52, Mar. 2014.
2 IEEE Std.802.15.4, IEEE Standard for wireless medium access control and physical layer specifications for low-rate wireless personal area networks, Sep. 2006.
3 D. C. Lee, S. H. Jang and Y. H. Jung, "Design of non-coherent demodulator for LR-WPAN system," The Journal of Korea Navigation Institute, Vol. 17, No. 6, pp. 705-711, Dec. 2013.   DOI
4 Z. Y. Choi and Y. H. Lee, "Frame synchoronization in the presence of frequency offset," IEEE Transaction on Communication, Vol. 50, No. 7, pp. 1062-1065, July 2002.   DOI   ScienceOn
5 J. G. Proakis, Digital Communications, 4th ed., New York, McGraw-Hill Inc, 1995.
6 D. Park, S. Park, and K. Lee, "Simple design of detector in the presence of frequency offset for IEEE 802.15.4 LR-WPANs," IEEE Trans. Circuit and systems II, Vol. 56, No. 4, pp. 330-334, April 2009.   DOI   ScienceOn