waveform design for active sensing systems chapters 1-2 uppsala university department of information...
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Waveform Design for Active Sensing SystemsChapters 1-2
Uppsala UniversityDepartment of Information TechnologyUppsala UniversityDepartment of Information Technology
Mojtaba SoltanalianMay 2012
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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.
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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.
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Introduction
•Periodic/Aperiodic Autocorrleation
•Relationship:
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Introduction
•Why computational design?
•Metrics:
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Introduction>Existing waveforms•Chirp signal:
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Introduction>Existing waveforms•Root-of-unity codes:
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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
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Introduction>Existing waveforms•Barker codes
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Introduction
•Unimodular sequences have optimal (i.e. unity) peak-to-average ratio (PAR):
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Sing. Ape. Seq. Des.
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Sing. Ape. Seq. Des.
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Sing. Ape. Seq. Des.
•Important step:
•Discussion.
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Sing. Ape. Seq. Des.
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Sing. Ape. Seq. Des.
•Cyclic minimization:
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Sing. Ape. Seq. Des.
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Sing. Ape. Seq. Des.
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Sing. Ape. Seq. Des.
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Sing. Ape. Seq. Des.
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Sing. Ape. Seq. Des.
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Numerical Examples
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Numerical Examples
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Numerical Examples
•Quantized CAN:
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Discussions.
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