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An Impulse Radio Asynchronous Transceiver for High Data Rates

An Impulse Radio Asynchronous Transceiver for High Data Rates. IEEE Conference 2004 on UWB Systems and Technologies. Stephane paquelet, Louis-Marie Aubert and Bernard Uguen. 05/24/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab. Objectives.

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An Impulse Radio Asynchronous Transceiver for High Data Rates

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  1. An Impulse Radio Asynchronous Transceiver for High Data Rates IEEE Conference 2004 on UWB Systems and Technologies Stephane paquelet, Louis-Marie Aubert and Bernard Uguen 05/24/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

  2. Objectives • Providing an Operative way of achieving high data rates for Impulse Radio (IR) based transmission systems 05/24/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

  3. Contents • Introduction • Modulation and Channel Model • Analysis • System performances • Hardware Implementation • Conclusion 05/24/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

  4. Introduction • This paper aims at designing a simple Tx/Rx architecture suitable for High Data Rates. WPAN issues are especially targeted. • With respect to number of significant paths and signal distortion produced by both antennas and material propagation, synchronization and generally speaking channel estimation in IR schemes turns out to be a critical point to design a rake receiver. • Asynchronous methods are favoured, since they require relaxed synchronization constraints. 05/24/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

  5. Modulation and Channel Model • Favoring non-coherent demodulation, and thus a receiver working as an energy detector, information is preferably carried by signal amplitude rather than its phase • It naturally leads us to consider Pulse Amplitude Modulation • In that case, an OOK modulation appears to be a suitable candidate since it possesses a good optimality considering a non-coherent demodulation 05/24/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

  6. Modulation and Channel Model • To Increase the system capacity, we propose to duplicate this basic scheme on several separate sub-bands (8-24) • The adopted non-coherent receiver structure per sub-band is then following • For an emitted pulse with waveform p(t), the received signal will be: 05/24/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

  7. Analysis • Symbol repetition periodis choosen as Tr>=Ts+Td • For high data rates IR schemes, Tr>=Td (asTs<<Td) • Concentrating on a particular sub-band of width B in which a pulse of general waveform p(t) is located, the transmitted signal is then, 05/24/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

  8. Analysis Decision problem setting: Optimal Threshold: An Expression: 05/24/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

  9. Analysis 05/24/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

  10. Analysis: Numerical Curves 05/24/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

  11. Performance: Link Budget 05/24/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

  12. Performances: Numerical Results 05/24/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

  13. Hardware Implementation 05/24/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

  14. Conclusion • This paper presents a simple non-coherent architecture providing high data rate with impulse radio • The encouraging performances obtained show the obvious potential of these principles and the mainly analog-oriented transceiver could be fruitfully capitalized for low-cost applications. 05/24/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

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