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Volume 31 Issue 8
Dec.  2010
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Zhang Ting-ting, Zhang Qin-yu, Zhang Nai-tong. A UWB Ranging Method Based on Weighted Energy Detection[J]. Journal of Electronics & Information Technology, 2009, 31(8): 1946-1951. doi: 10.3724/SP.J.1146.2008.01120
Citation: Zhang Ting-ting, Zhang Qin-yu, Zhang Nai-tong. A UWB Ranging Method Based on Weighted Energy Detection[J]. Journal of Electronics & Information Technology, 2009, 31(8): 1946-1951. doi: 10.3724/SP.J.1146.2008.01120

A UWB Ranging Method Based on Weighted Energy Detection

doi: 10.3724/SP.J.1146.2008.01120
  • Received Date: 2008-09-09
  • Rev Recd Date: 2009-04-20
  • Publish Date: 2009-08-19
  • In order to design a low-computational Time Of Arrival (TOA) estimation algorithm for the Ultra WideBand (UWB) based wireless sensor network, a new TOA estimation method which focuses on the Direct Path (DP) component based on weighted energy detection is proposed in this paper. This method includes two steps, one is DP energy block detection, and the other is the refined DP estimation. A closed form for performance analysis is proposed, and system parameters that affect estimation performance are studied with analytical and numerical methods. The results compared with traditional ranging methods also show that this method can achieve relative high performance under low sample rate conditions.
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  • Akyildiz I F, Su Weilian, and Sankarasubramaniam Y, et al..A survey on sensor networks. IEEE CommunicationsMagazine, 2002, 40(8): 102-114.[2]Eirini K, Ioannis G, and Ioannis T, et al.. UWB Technologyto Enhance the Performance of Wireless Multimedia SensorNetworks. 2007. ISCC 2007. 12th IEEE Symposium onComputers and Communications, Aveiro, Portugal, 1-4 July2007: 57-62.[3]Jourdan D, Dardari D, and Win M. Position error bound forUWB localization in dense cluttered environments[J].IEEETransactions on Aerospace and Electronic Systems.2008,44(2):613-628[4]Gezici S, Tian Zhi, and Giannakis G B, et al.. Localizationvia ultra-wideband radios: A look at positioning aspects forfuture sensor networks. IEEE Signal Processing Magazine,2005, 22(4): 70-84.[5]Lee Joon-Yong and Yoo Sungyul. Large error performance ofUWB ranging in multipath and multiuser environments[J].IEEE Transactions on Microwave Theory and Techniques.2006, 54(4):1887-1895[6]Guvenc I and Sahinoglu Z. Threshold-based TOA estimationfor impulse radio UWB systems. 2005. ICU 2005. 2005 IEEEInternational Conference on Ultra-Wideband, Zurich,Switzerland, 5-8 Sept. 2005: 420-425.[7]Xu Chi and Law C L. Delay-dependent threshold selection forUWB TOA estimation[J].IEEE Communications Letters.2008, 12(5):380-382[8]Gezici.S, Sahinoglu Z, and Molisch A F. A two-step time ofarrival estimation algorithm for impulse radio ultra-widebandsystems. in Proc. of 13th European Signal Processing Conf.2005. Istanbul Turkey, 4-10, Sept, 2005: 1-6.[9]Wu Shaohua, Zhang Qinyu, and Zhang Naitong. A two-stepTOA estimation method for IR-UWB ranging systems. 2007.CNSR '07. Fifth Annual Conference on CommunicationNetworks and Services Research, Fredericton, NewBrunswick, 14-17 May 2007: 302-310.[10]Wu Jianjun, Xiang Haige, and Tian Zhi. Weightednoncoherent receivers for UWB PPM signals. IEEECommunications Letters, 2006, 10(9): 655-657.[11]D'Amico A A, Mengali U, and Arias-de-Reyna E. EnergydetectionUWB receivers with multiple energy measurements[J].IEEE Transactions on Wireless Communications.2007, 6(7):2652-2659[12]Steven M Kay, 等著, 罗鹏飞, 张文明, 刘忠等译. 统计信号处理基础估计与检测理论. 北京: 电子工业出版社, 2003,Vol. II: 501-517.[13]Tian Z and Sadler B M. Weighted energy detection ofultra-wideband signals. 2005 IEEE 6th Workshop on SignalProcessing Advances in Wireless Communications, New York,5-8 June 2005: 1068-1072.
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