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Sökning: L773:9781424473052

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1.
  • Haneda, Katsuyuki, et al. (författare)
  • Comparison of delay and angular spreads between channel measurements and the COST2100 channel model
  • 2010
  • Ingår i: 2010 Loughborough Antennas and Propagation Conference, LAPC 2010. - 9781424473052 ; , s. 477-480
  • Konferensbidrag (refereegranskat)abstract
    • The COST2100 channel model is a reference channel model which provides dynamic multiple-input multiple-output channel responses for radio system simulations. In this paper, channels created by the COST2100 model were compared to channel measurements in order to understand behaviours of the model. Model parameters of the COST2100 model were derived by dynamic double-directional channel measurements with which the channel realizations from the COST2100 model were compared. Delay and angular spreads were used as a simple but important metric for the comparison. Despite a fundamental difference that the COST2100 model is a geometry-based stochastic model while the channel measurements are obtained in deterministic environments, the comparison revealed an acceptable level of agreement for practical channel simulations
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2.
  • Prasad, Sathyaveer, et al. (författare)
  • Comparison of Four Different Methods to Estimate the Radiated Power from Mobile Phones
  • 2010
  • Ingår i: Comparison of Four Different Methods to Estimate the Radiated Power from Mobile Phones. - 9781424473052 ; , s. 425-428
  • Konferensbidrag (refereegranskat)abstract
    • In this paper, the radiated power is estimated for various commercially available mobile phones using the Telia Scattered Field Measurement method (TSFM), In-Network performance estimation and the EMSCAN near field scanner: "Lab-Express". The results are then compared with the radiated power measured using the Satimo Star Gate 64/24 system. Our measurement results suggest that the radiated power measured in the TSFM method correlates to a great extent both with the Star Gate System and the In-network method suggesting that the TSFM method can be used an alternative tool to in-network measurements and also can be used for standard reference measurements provided accuracy and repeatability are accounted according to the standards. However, the results from the Star Gate system were weakly correlated to the results from the Lab-Express suggesting that Lab-Express cannot replace Star Gate System for standard reference measurements but can only serve as a good tool for testing antennas during design and development phases.
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