1. Immoree, I. and T.-H. Tao, "UWB radar for patient monitoring," IEEE Aerospace and Electronic Systems Magazine, Vol. 23, No. 11, 11-18, 2008.
doi:10.1109/MAES.2008.4693985        Google Scholar

2. Lazaro, A., D. Girbau, and D. Villarino, "Analysis of vital signs monitoring using an IR-UWB radar," Progress In Electromagnetics Research, Vol. 100, 265-284, 2010.
doi:10.2528/PIER09120302        Google Scholar

3. Ramos, A., A. Lazaro, D. Girbau, and R. Villarino, "Time-domain measurement of time-coded UWB chipless RFID tags," Progress In Electromagnetics Research, Vol. 116, 221-237, 2011.        Google Scholar

4. Zhang, Z. and Y. Lee, "A robust cad tool for integrated design of UWB antenna system," Progress In Electromagnetics Research, Vol. 112, 441-457, 2011.        Google Scholar

5. Alshehri, S. A., S. Khatun, A. B. Jantan, R. S. A. Raja Abdullah, R. Mahmood, and Z. Awang, "Experimental breast tumor detection using nn-based UWB imaging," Progress In Electromagnetics Research, Vol. 111, 447-465, 2011.
doi:10.2528/PIER10110102        Google Scholar

6. Alshehri, S. A., S. Khatun, A. B. Jantan, R. S. A. Raja Abdullah, R. Mahmood, and Z. Awang, "3D experimental detection and discrimination of malignant and benign breast tumor using nn-based UWB imaging system," Progress In Electromagnetics Research, Vol. 116, 221-237, 2011.        Google Scholar

7. Mikhelson, I. V., S. Bakhtiari, T. W. Elmer, and A. V. Sahakian, "Remote sensing of heart rate and patterns of respiration on a stationary subject using 94-GHz millimeter-wave interferometry," IEEE Trans. Biomed. Eng., Vol. 58, No. 6, 1671-1677, 2011.
doi:10.1109/TBME.2011.2111371        Google Scholar

8. Yang, Y., S. M. Royg, N. C. Karmakar, and X. Zhu, "A novel narrow bandpass filter for image rejection and channel selection in a wireless sleep apnoea monitoring system," Progress In Electromagnetics Research, Vol. 125, 483-501, 2012.
doi:10.2528/PIER12012907        Google Scholar

9. Zhang, W., A. Hoorfar, and L. Li, "Through-the-wall target localization with time reversal music method," Progress In Electromagnetics Research, Vol. 106, 75-89, 2010.
doi:10.2528/PIER10052408        Google Scholar

10. Jia, Y., L. Kong, and X. Yang, "A novel approach to target localization through unknown walls for through-the-wall radar imaging," Progress In Electromagnetics Research, Vol. 119, 107-132, 2011.
doi:10.2528/PIER11052402        Google Scholar

11. Li, Y., X. Jing, H. Lv, and J. Wang, "Analysis of characteristics of two close stationary human targets detected by impulse radio UWB radar," Progress In Electromagnetics Research, Vol. 126, 429-447, 2012.
doi:10.2528/PIER12011908        Google Scholar

12. McGinley, B., M. O'Halloran, R. C. Conceicao, G. Higgins, E. Jones, and M. Glavin, "The effects of compression on ultra wideband radar signals," Progress In Electromagnetics Research, Vol. 117, 51-65, 2011.        Google Scholar

13. Shaban, H. A., M. A. El-Nasr, and R. M. Buehrer, "Localization with sub-millimeter accuracy for UWB-based wearable human movement radar systems," Journal of Electromagnetic Waves and Applications, Vol. 25, No. 11-12, 1633-1644, 2011.
doi:10.1163/156939311797164918        Google Scholar

14. Wong, S. K., F. Kung, S. Maisurah, and M. N. B. Osman, "A wimedia compliant cmos RF power amplifier for ultra-wideband (UWB) transmitter," Progress In Electromagnetics Research, Vol. 112, 329-347, 2011.        Google Scholar

15. Lizzi, L., G. Oliveri, and A. Massa, "A time-domain approach to the synthesis of UWB antenna systems," Progress In Electromagnetics Research, Vol. 122, 557-575, 2012.
doi:10.2528/PIER11103003        Google Scholar

16. Zhu, F., S. Gao, A. T. S. Ho, C. H. See, R. A. Abd-Alhameed, J. Li, and J. Xu, "Design and analysis of planar ultra-wideband antenna with dual band-notched function," Progress In Electromagnetics Research, Vol. 125, 483-501, 2012.        Google Scholar

17. Andres-Garcia, B., L. E. Garcia-Munoz, D. Segovia-Vargas, I. Camara-Mayorga, and R. Gusten, "Ultrawideband antenna excited by a photomixer for terahertz band," Progress In Electromagnetics Research, Vol. 114, 1-15, 2011.        Google Scholar

18. Nezirovic, A., A. G. Yarovoy, and L. P. Ligthart, "Signal processing for improved detection of trapped victims using UWB radar," IEEE Trans. Geosci. Remote Sens., Vol. 48, No. 4, 2005-2014, 2010.
doi:10.1109/TGRS.2009.2036840        Google Scholar

19. Lv, H., G. H. Lu, X. J. Jing, and J. Q. Wang, "A new ultra-wideband radar for detecting survivors buried under earthquake rubbles," Microwave Opt. Technol. Lett., Vol. 52, No. 11, 2621-2624, 2010.
doi:10.1002/mop.25539        Google Scholar

20. Zhu, F., S. C. S. Gao, A. T. S. Ho, T. W. C. Brown, J. Li, and J. D. Xu, "Low-profile directional ultra-wideband antenna for see-through-wall imaging applications," Progress In Electromagnetics Research, Vol. 121, 121-139, 2011.
doi:10.2528/PIER11080907        Google Scholar

21. Crowgey, B. R., E. J. Rothwell, L. C. Kempel, and E. L. Mokole, "Comparison of UWB short-pulse and stepped-frequency radar systems for imaging through barriers ," Progress In Electromagnetics Research, Vol. 110, 403-419, 2010.
doi:10.2528/PIER10091306        Google Scholar

22. Tian, B., D. Y. Zhu, and Z. D. Zhu, "A novel moving target detection approach for dual-channel SAR system," Progress In Electromagnetics Research, Vol. 115, 191-206, 2011.        Google Scholar

23. Li, B., Z. Zhou, D. Li, and S. Zhai, "Efficient cluster identification for measured ultra-wideband channel impulse response in vehicle cabin," Progress In Electromagnetics Research, Vol. 117, 121-147, 2011.        Google Scholar

24. Baboli, M., A. Sharafi, A. Ahmadian, and M. S. Nambakhsh, "An accurate and robust algorithm for detection of heart and respiration rates using an impulse based UWB signal," International Conference on Biomedical and Pharmaceutical Engineering, ICBPE'09, 13-18, 2009.        Google Scholar

25. Ossberger, G., T. Buchegger, E. Schimback, A. Stelzer, and R. Weigel, "Non-invasive respiratory movement detection and monitoring of hidden humans using ultra wideband pulse radar," Proc. of the 2004 International Workshop on Ultra Wideband Systems Joint with Conference on Ultra Wideband Systems and Technologies, 395-399, Piscataway, NJ, USA, 2004.
doi:10.1109/UWBST.2004.1321003        Google Scholar

26. Pavlov, S. and S. Samkov, "Algorithm of signal processing in ultra-wideband radar designed for remote measuring parameters of patient's cardiac activity," Ultrawideband and Ultrashort Impulse Signals, 2004 Second International Workshop, 204-207, 2004.        Google Scholar

27. Xu, Y., S. Dai, S. Wu, J. Chen, and G. Fang, "Vital sign detection method based on multiple higher order cumulant for ultrawideband radar," IEEE Trans. Geosci. Remote Sens., Vol. 50, No. 4, 1254-1265, 2012.
doi:10.1109/TGRS.2011.2164928        Google Scholar

28. Liu, Z., L. Liu, and B. Barrowes, "The application of the Hilbert-Huang transform in through-wall life detection with UWB impulse radar ," PIERS Online, Vol. 6, No. 7, 695-699, 2010.
doi:10.2529/PIERS100217122115        Google Scholar

29. Federal Communications Commission (FCC), , First report and order in the matter of revision of Part 15 of the commission's rules regarding ultra-wideband transmission systems, ET Docket 98-153, FCC 02-48, Apr. 2002.

30. Li, W., X. Jing, Z. Li, and J. Wang, "A new algorithm for through wall human respiration monitoring using GPR," 14th International Conference on Ground Penetrating Radar (GPR), 947-952, 2012.
doi:10.1109/ICGPR.2012.6254999        Google Scholar

31. Mendel, J. M., "Tutorial on higher-order statistics (spectra) in signal processing and system theory: Theoretical results and some applications," Proc. IEEE, Vol. 79, No. 3, 278-305, 1991.
doi:10.1109/5.75086        Google Scholar

32. Kiriazi, J. E., O. Boric-Lubecke, and V. M. Lubecke, "Dual-frequency technique for assessment of cardiopulmonary effective RCS and displacement ," IEEE Sens. J., Vol. 12, No. 3, 574-582, 2012.
doi:10.1109/JSEN.2011.2124454        Google Scholar