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The Simulation of Beamforming Techniques

The Simulation of Beamforming Techniques

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The Simulation of Beamforming Techniques

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  1. The Simulation of Beamforming Techniques 指導教授:黃文傑 學  生:蔡漢成

  2. Outline • Review of all common Beamforming tech. • Compare with different elements • Compare with different antenna space • Tracks the moving source • Conclusion

  3. Review of all common Beamforming tech. • Conventional Beamforming • MVDR Beamforming (Capon’s) • Robust Beamforming

  4. Y θ (L-1)d X d d Conv. Beamforming & Steering Vector

  5. ULA M = 4 8 12

  6. ULA SNR = 0 ~30

  7. ULA with different λ

  8. l= 1 θ= 2π/L R l= 0 l=L-1 UCA

  9. UCA 0.5 λ

  10. UCA 1.0 λ

  11. UCA 1.5λ

  12. UCA 2λ

  13. MVDR Beamforming

  14. Capon’s Beam-pattern

  15. ULA 0.5 λ

  16. ULA 1λ

  17. UCA 0.5 λ

  18. UCA 1 λ

  19. UCA 1.5 λ

  20. k = 0 Robust Beamforming

  21. Degree spreading

  22. The flow chart of Robust Beamforming

  23. ULA 0.5 λ

  24. ULA 1 λ

  25. ULA 1.5 λ

  26. UCA

  27. UCA 1.5 λ

  28. DOA Estimation • Conventional • Capon’s • MUSIC

  29. Conventional DOAEst. u(n)Receiving signal Pattern w(0~180)Conventional w(n) Weighting Vector

  30. Capon’s DOAEst. u(n)Receiving signal Pattern w(0~180)Capon’s w(n) Weighting Vector

  31. MUSIC w(n)Weighting Vector u(n)Receiving signal DOAEst. Eigen decompositionNoise SpaceVn PMUSIC Pattern a(0~180)

  32. Compare the three methods

  33. Compare the three methods

  34. Conclusion