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[Keyword] Ricean fading(1hit)

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  • Performance Evaluation for Vehicular Speed Response Phase Locked Loop in Ricean Fading Environment

    Masanori HAMAMURA  Shin'ichi TACHIKAWA  

     
    PAPER-Radio Communication

      Vol:
    E81-B No:3
      Page(s):
    609-615

    Vehicular speed response phase locked loop (VSR-PLL) is a novel circuit to remove a steady-state frequency offset which arises in the receiver with directive antenna. In this paper, the circuit is applied to Ricean fading environment. For the application of VSR-PLL to Ricean statistics channel, the Doppler shift information of direct wave must be obtained because the self-oscillation frequency of VCO is controlled by using the information. This paper describes an estimation method for the Doppler shift of the direct wave, and shows the several results of the performance analysis for the estimation method and proposed VSR-PLL with the method. As a result, we found that the proposed VSR-PLL could reduce the irreducible bit-error rate for QPSK system from about 10-2 to 10-3 on several conditions.