제어로봇시스템학회:학술대회논문집

제어로봇시스템학회 (Institute of Control, Robotics and Systems)
권호 표지

Accuracy of Free Space Path Loss and Matched Filter Gain Approximated by Using Passband Rectangular Pulse for Ultra Wideband Radio Systems

  • Supanakoon, Pichaya (Department of Information Engineering, Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang) ;
  • Tanchotikul, Suchada (Department of Information Engineering, Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang) ;
  • Tangtisanon, Prakit (Department of Information Engineering, Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang) ;
  • Promwong, Sathaporn (Department of Information Engineering, Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang, Graduate School of Science and Engineering, Tokyo Institute of Technology) ;
  • Takada, Jun-Ichi (Graduate School of Science and Engineering, Tokyo Institute of Technology)
  • 발행 : 2004.08.25
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초록

This paper analyzes the accuracy of free space path loss and matched filter gain approximated by using a passband rectangular pulse for ultra wideband (UWB) radio systems. The example causal signal, a modulated Gaussian pulse with the same center frequency and frequency bandwidth of the passband rectangular pulse, is used to consider the accuracy. The path loss and matched filter gain of the modulated Gaussian pulse are simulated for the reference results. The UWB free space path loss is shown and is compared with that obtained from simulation and Friis' transmission formula. The UWB matched filter gain is shown and compared with simulation results. From the results, we can see that the UWB path loss formula is more accurate than the Friis' transmission formula. The results from the UWB free space path loss and matched filter gain formulas agree with the simulation. Then, these free space path loss and matched filter gain formulas approximated by using a passband rectangular pulse are appropriate for UWB system.

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