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Waveform Design for Active Sensing Systems

Uppsala University Department of Information Technology. Waveform Design for Active Sensing Systems. Chapters 1-2. Mojtaba Soltanalian May 2012. Introduction>Applications. CDMA Communications Active sensing (Radar, Sonar, etc.).

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Waveform Design for Active Sensing Systems

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  1. Uppsala University Department of Information Technology Waveform Design for Active Sensing Systems Chapters 1-2 MojtabaSoltanalian May 2012

  2. Introduction>Applications • CDMA Communications • Active sensing (Radar, Sonar, etc.) Images are taken from [http://www.pangolinsms.com/tech03-types-of-mobile-phones.htm]- visited 2011-09-18, and [http://tech-software.net/radar]-visited 2011-09-18, respectively.

  3. Introduction>Applications • Channel estimation • Synchronization • Data hiding, ultra-wideband (UWB) communications, synthesis of orthogonal matrices for source coding and complementary coding, . . . Images are taken from [http://www.microwave-eetimes.com/en/solving-qos-headaches-in-fixed-broadband-wireless.html]- visited 2011-09-18, and [http://www.electronicspecifier.com/Industry-News/Semtech-and-Rakon-to--Develop-IEEE-1588-V2-Timing-Solutions-for-High-Speed-Wireless-Wired-Networks.asp]-visited 2011-09-19, respectively.

  4. Introduction • Periodic/Aperiodic Autocorrleation • Relationship:

  5. Introduction • Why computational design? • Metrics:

  6. Introduction>Existing waveforms • Chirp signal:

  7. Introduction>Existing waveforms • Root-of-unity codes:

  8. Introduction>Existing waveforms • Root-of-unity codes: are rare! • Mow’s Conjecture: the only possible lengths for root-of-unity codes with M-ary alphabet are M and M . 2

  9. Introduction>Existing waveforms • Barker codes

  10. Introduction • Unimodular sequences have optimal (i.e. unity) peak-to-average ratio (PAR):

  11. Sing. Ape. Seq. Des.

  12. Sing. Ape. Seq. Des.

  13. Sing. Ape. Seq. Des. • Important step: • Discussion.

  14. Sing. Ape. Seq. Des.

  15. Sing. Ape. Seq. Des. • Cyclic minimization:

  16. Sing. Ape. Seq. Des.

  17. Sing. Ape. Seq. Des.

  18. Sing. Ape. Seq. Des.

  19. Sing. Ape. Seq. Des.

  20. Sing. Ape. Seq. Des.

  21. Numerical Examples

  22. Numerical Examples

  23. Numerical Examples • Quantized CAN:

  24. Discussions.

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