utilizing physical layer information to improve rfid tag

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[10] P. V. Nikitin and K. V. S. Rao, “Theory and measurement of backscattering from rfid tags,” Intermec Technologies Corporation, WA, USA. [11] S. Sarma, D. Brock, and D. Engels, “Radio frequency identification and the electronic product code,” IEEE Micro, vol. 21, no. 6, pp. 50–54, 2001. [12] C. W. Helstrom, Elements of Signal Detection and Estimation. Prentice Hall, 1994. [13] D. Shen, G. Woo, D. Reed, A. Lippman, and J. Wang, “Separation of multiple passive rfid signals using software defined radio,” in RFID, 2009 IEEE Interna- tional Conference on, April 2009, pp. 139–146. [14] “Tag feng shui - a practical guide to applying rfid tags,” White paper, Alien Technology, Morgan Hill, CA, 2007. [15] J. Mitsugi and H. Hada, “Experimental study on uhf passive rfid readability degradation,” in Applications and the Internet Workshops, 2006. SAINT Work- shops 2006. International Symposium on, Jan. 2006, pp. 4 pp.–. [16] R. Harrington, “Electromagnetic scattering by antennas,” Antennas and Propa- gation, IEEE Transactions on, vol. 11, no. 5, pp. 595–596, Sep 1963. [17] J. Landt, “The history of rfid,” Potentials, IEEE, vol. 24, no. 4, pp. 8–11, Oct.- Nov. 2005. [18] M. White, “Radar cross-section: measurement, prediction and control,” Elec- tronics and Communication Engineering Journal, vol. 10, no. 4, pp. 169–180, Aug 1998. [19] N. Abramson, “The aloha system: another alternative for computer communica- tions,” in AFIPS ’70 (Fall): Proceedings of the November 17-19, 1970, fall joint computer conference. New York, NY, USA: ACM, 1970, pp. 281–285. [20] D. W. Engels, “The reader collision problem,” MIT Auto-ID center, Tech. Rep., Nov 2001. 58
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UTILIZING PHYSICAL LAYER INFORMATIO
Page 3 and 4:
ACKNOWLEDGEMENTS My first encounter
Page 5 and 6:
This thesis proposes a method of us
Page 7 and 8:
5.3 Signal separation . . . . . . .
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6.7 Strong and weak tag collision w
Page 11 and 12:
CHAPTER 1 INTRODUCTION Radio-Freque
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and signal absorption or reflection
Page 15 and 16:
2.1 RFID Reader CHAPTER 2 PASSIVE U
Page 17 and 18: Figure 2.2. Alien Squiggle Tag. Fig
Page 19 and 20: CHAPTER 3 ISO 18000-6C PROTOCOL The
Page 21 and 22: eply immediately. Tags that pick a
Page 23 and 24: identification times even if the nu
Page 25 and 26: difficult problem as field nulls ar
Page 27 and 28: Figure 5.1. Passive tag structure.
Page 29 and 30: Figure 5.4. Software defined radio.
Page 31 and 32: Figure 5.7. I-Q plot. Figure 5.8. 2
Page 33 and 34: 6.1 Tag estimation from collision C
Page 35 and 36: Figure 6.3. 4 tag collision. tags i
Page 37 and 38: 2. Anti-collision with enhanced tag
Page 39 and 40: Table 6.4. Results for enhanced ant
Page 41 and 42: Figure 6.8. Strong and weak tag col
Page 43 and 44: Figure 6.10. Random number distribu
Page 45 and 46: Figure 6.13. Squiggle tag. Figure 6
Page 47 and 48: Figure 6.17. Gaussian PDFs used for
Page 49 and 50: CHAPTER 7 USRP SYSTEM A software-de
Page 51 and 52: 7.2 Software GNU Radio is a free so
Page 53 and 54: CHAPTER 8 CONCLUSIONS AND FUTURE WO
Page 55 and 56: probabilty distribution. Thus there
Page 57 and 58: tions. This section contains the th
Page 59 and 60: A.1.2 Algortihm A (Reference Algori
Page 61 and 62: end end 51
Page 63 and 64: A.2.2 Inventory Round Simulation %R
Page 65 and 66: A.2.3 Predicting Number of Tags %Ru
Page 67: REFERENCES [1] EPCglobal, “Uhf cl
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