Communications

Volume 5, Issue 3, May 2017

  • Comparative Study of Least Square Methods for Tuning CCIR Pathloss Model

    Nnadi Nathaniel Chimaobi, Ifeanyi Chima Nnadi, Chibuzo Promise Nkwocha

    Issue: Volume 5, Issue 3, May 2017
    Pages: 19-23
    Received: Jan. 08, 2017
    Accepted: Jan. 24, 2017
    Published: Jun. 14, 2017
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    Abstract: Comparative study of two least square methods for tuning CCIR pathloss model is presented. The first model tuning approach is implemented by the addition or subtraction of the root mean square error (RMSE) based on whether the sum of errors is positive or negative. The second method is implemented by addition of a composition function of the residu... Show More
  • Performance Comparison on Three Time Delay Estimation Algorithms Using Experiments

    Junhao Li, Wenhong Liu

    Issue: Volume 5, Issue 3, May 2017
    Pages: 24-28
    Received: Aug. 07, 2017
    Accepted:
    Published: Aug. 07, 2017
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    Abstract: Time delay estimation (TDE) is applied in many areas. Its estimation performance plays an important role in many actual systems, such as malfunction sound location. In this paper, estimation performances of three TDE algorithms, correlation, covariance, and fractional lower order covariance, are compared. Traditional, additive noises in the actual ... Show More