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http://dx.doi.org/10.5515/KJKIEES.2009.20.7.648

Spatial Characteristics of Time-Reversal Pulse in Rayleigh and Ricean Fading Channels  

Yoo, Hyung-Ha (Applied Electromagnetics Lab., Graduate School of Information Technology and Telecommunications, In-Ha University)
Koh, Il-Suek (Applied Electromagnetics Lab., Graduate School of Information Technology and Telecommunications, In-Ha University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.20, no.7, 2009 , pp. 648-656 More about this Journal
Abstract
We perform an analysis of the characteristics of the time-reversal pulse in Rayleigh or Ricean fading channel environments. We verify it by using Monte Carlo simulation. In a time-reversal system, each antenna in the time-reversal array receives signals from the transmitter and reverse the received signal in the time axis and then resend it to the original transmitter. We assume that the channel characteristics varies very slowly and the spatial separation between the antennas is not large. Hence the signals received by each antenna are correlated. In this paper, the effect of the correlation on the time-reversed pulse is examined, which includes the spatial properties of the time-reversal pulse such as the focus size, and spatial power distribution.
Keywords
Time-Reversal Technique; Rayleigh Channel; Ricean Channel;
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1 M. Fink, "Time-reversal ultrasonic fields-part I: Basic principles", IEEE Trans. Ultrason. Ferroelectr., Freq. Control, vol. 39, no. 5 pp. 555-566, May 1992   DOI   ScienceOn
2 William C. Y. Lee, Mobile Communications Engineering, 2nd Edition, McGraw-Hill Telecommunications, p. 327
3 Y. Karasawa, H. Iwai, "Formulation of spatial correlation statistics in Nakagami-rice fading environments", IEEE Trans. on Antenna and Propagat., vol. 48, 2000   DOI   ScienceOn
4 F. Wu, J. L. Thomas, and M. Fink, "Time-reversak of ultrasonic fields-part II: Experimental results", IEEE Trans. Ultrason., Ferroelectr., Freq. Control, vol. 39, no. 5, pp. 567-578, May 1992   DOI   ScienceOn
5 P. Bloomberg, G. Papanicolaou, and H. K. Zhao, "Super resolution in time-reversal acoustics", J. Acoust. Soc. Amer., vol. 111, pp. 230-248, 2002   DOI   ScienceOn
6 L. Carin, H. W. Liu, T. Yoder, L. Couchman, B. Houston, and J. Bucaro, "Wideband time-reversal imaging of an elastic target in an acoustic waveguide", J. Acoust. Soc. Amer., vol. 115, pp. 259-268, 2004   DOI   ScienceOn
7 M. Fink, G. Montaldo, and M. Tanter, "Time- reversal acoustics", Ultrasonic, Ferro-electr. and Freq. Control Joint 50th Annivsary Conference, pp. 850-859, 2004
8 D. Shin, I. Koh, and S. Nam, "다중경로 환경에서 Time-reversal을 이용한 경우의 전파 특성 연구", 춘계 마이크로파 및 전자파학술대회 논문집, pp. 483-486, 2005년 5월
9 J. S. Kim, H. C. Song, and W. A. Kuperman "Adaptive time-reversal mirror", J. Acoust. Soc. Amer., vol. 109, pp. 1817-1825, 2001   DOI   ScienceOn
10 A. Papoulis, S. Pillai, Probability, Random Variables and Stochastic Processes, McGraw-Hill, pp. 191-192, 2002
11 H. C. Eggers, P. Lipa, "Unbiased estimators for correlation measurements", Physical Review D., vol. 51, #5, 1995   DOI   PUBMED   ScienceOn