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Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication NGUYEN DINH QUY, Prof. GAN WOON SENG The Second International Conference on Digital Communication (ICDT’07) July 1-6, 2007 - Sillicon Valley, USA
Scope ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Basic Communication Problem ,[object Object],[object Object],[object Object],Multipath environment Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication
Time Reversal Signal Processing (TRSP) ,[object Object],[object Object],[object Object],Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication
TR communication (1) Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication Green’s function estimation on transmission
TR communication (2) Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication Green’s function estimation on reception
Green’s function estimation   ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication
Total length estimation in arbitrary Cartesian 2D,3D Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication (1) (2)
Total length estimation in 2D,3D in theory  Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication
Total length estimation in 2D,3D in theory Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication Total length estimation in 2D in practice: Green’s function estimation in 2D in practice: v:  propagation speed Total length estimation in 3D in practice: Green’s function estimation in 3D in practice: (3) (4)
Total length estimation in 2D in practical condition ,[object Object],[object Object],[object Object],[object Object],Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication
Total length estimation in 2D,3D in practice Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication Total length estimation in 2D in practice: Green’s function estimation in 2D in practice: C i :  Reflectivity coefficient. Total length estimation in 3D in practice: Green’s function estimation in 3D in practice: (5) (6)
Complexity comparison  Total length propagation   estimation 3D Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication Total length propagation estimation 2D 1 2 2 Square root 3 4 4 Multiplication 3 4 7 Additions  Proposed reality Proposed theory Previous theory 1 2 2 Square root 5 6 6 Multiplication 3 6 11 Additions  Proposed reality Proposed theory Previous theory
Discussion (1) ,[object Object],[object Object],[object Object],[object Object],[object Object],Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication
Discussion (2) ,[object Object],[object Object],[object Object],Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication
Applications ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication
Conclusions ,[object Object],[object Object],Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication
Future works ,[object Object],[object Object],[object Object],Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication
Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication THANK YOU! Any information, feel free contact: Nguyen Dinh Quy [email_address]

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ICDT 2007

  • 1. Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication NGUYEN DINH QUY, Prof. GAN WOON SENG The Second International Conference on Digital Communication (ICDT’07) July 1-6, 2007 - Sillicon Valley, USA
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  • 5. TR communication (1) Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication Green’s function estimation on transmission
  • 6. TR communication (2) Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication Green’s function estimation on reception
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  • 8. Total length estimation in arbitrary Cartesian 2D,3D Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication (1) (2)
  • 9. Total length estimation in 2D,3D in theory Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication
  • 10. Total length estimation in 2D,3D in theory Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication Total length estimation in 2D in practice: Green’s function estimation in 2D in practice: v: propagation speed Total length estimation in 3D in practice: Green’s function estimation in 3D in practice: (3) (4)
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  • 12. Total length estimation in 2D,3D in practice Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication Total length estimation in 2D in practice: Green’s function estimation in 2D in practice: C i : Reflectivity coefficient. Total length estimation in 3D in practice: Green’s function estimation in 3D in practice: (5) (6)
  • 13. Complexity comparison Total length propagation estimation 3D Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication Total length propagation estimation 2D 1 2 2 Square root 3 4 4 Multiplication 3 4 7 Additions Proposed reality Proposed theory Previous theory 1 2 2 Square root 5 6 6 Multiplication 3 6 11 Additions Proposed reality Proposed theory Previous theory
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  • 19. Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication THANK YOU! Any information, feel free contact: Nguyen Dinh Quy [email_address]

Editor's Notes

  1. Title: Green’s function estimation in homogeneous and scattering medium for Time Reversal Signal Processing (TRSP) communication Authors: NGUYEN DINH QUY, Student IEEE member, email: n060075@ntu.edu.sg Prof. GAN WOON SENG, Senior Member, IEEE, email: ewsgan@ntu.edu.sg
  2. Before we go into the details, let us look at the scope of the paper. To major objective of the project is to improve Green’s function estimation in Time Reversal Signal Processing In this paper, two approaches to improve Green’s function have been investigated. (1) The first approach is to change the coordinate system to estimate Green’s function in theoretical condition (2) The second approach is to propose new Green’s function estimation in practical condition
  3. TRSP can use higher power in multipath environment
  4. From complexity comparison table, + Reduce nearly half of computation complexity + Number of scatterers is large, the proposed Green’s function estimation in theory and practice have more significant computational complexity saving compared to existing Green’s function estimation. (2) In DSP implementation, the smaller computation resource in structure, the fewer quantization and truncation errors in DSP Operation (3) Proposed Green’s function estimation contributes to a feasibility study of time reversal signal processing in communication with faster simulation and provides more accuracy experiment in homogeneous and multiple scattering medium (J.V. Candy, Lawrence Livermore National Laboratory)