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UWB, positioning

UWB, positioning. Taekyoung kwon. Classical radio signal. Separation of signals Conventional signals discern one from the other by different frequency Ideal: smallest bandwidth occupancy The best capacity is when each user occupies a smallest sliver of frequency Sine wave carrier.

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UWB, positioning

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  1. UWB, positioning Taekyoung kwon

  2. Classical radio signal • Separation of signals • Conventional signals discern one from the other by different frequency • Ideal: smallest bandwidth occupancy • The best capacity is when each user occupies a smallest sliver of frequency • Sine wave carrier

  3. Separation by frequency

  4. Separation of signals: another look • Signals can be separated in time • Ideal: shortest time duration • Best capacity is when each user occupies the smallest sliver of time • Impulse radio

  5. Separation of signals: time

  6. Data rates vs. range

  7. Current 802.15 activities

  8. Why UWB? • High throughput • Location capability • Theoretically sub-centimeter • Low power • Low cost • Scalable range compared to other PAN technologies

  9. GPS-free positioning • TOA: time of arrival • Distance: time of flight * c • Tri-angulation • 2D: 3 reference points is needed

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