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On the Analysis of Envelope Correlation and Spectra for Rician Fading Channel

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Abstract

Physical fading radio channels encountered in wireless mobile communication are often modeled as a complex Gaussian process whose envelope is statistically described by Rayleigh or Rician probability distribution function (PDF). In most of the literature, the accuracy of the simulation model is estimated by comparing the simulated autocorrelation function (ACF) of inphase (or quadrature phase) component of the fading process and ACF of squared envelope with the analytical ones. In this paper, we examine the performance of a sum of sinusoid (SOS) based Rician fading channel simulator on the basis of the ACF and power spectral density (PSD) of the fading envelope. We obtained simplified approximate expressions for the autocorrelation and mean value of the fading envelope which become more accurate as the value of Rice factor increases. In the simulation, the line-of-sight (LOS) component is modeled as a zero-mean random variable with pre-chosen angle of arrival (AOA) and random initial phase. We showed that the AOA of the LOS component significantly affects the level crossing rate (LCR) and average fade duration (AFD) of the fading envelope. All simulation results are compared with the analytical results and a very good agreement between them is found.

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Authors and Affiliations

  1. Department of Information and Communication Technology, ABV-Indian Institute of Information Technology and Management, Gwalior, India

    Aditya Trivedi

  2. Department of Electronics Engineering, Madhav Institute of Technology and Science, Gwalior, India

    Rekha Gupta

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  1. Aditya Trivedi
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  2. Rekha Gupta
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Correspondence to Rekha Gupta.

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Trivedi, A., Gupta, R. On the Analysis of Envelope Correlation and Spectra for Rician Fading Channel. Wireless Pers Commun 47, 281–292 (2008). https://doi.org/10.1007/s11277-008-9461-x

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  • DOI: https://doi.org/10.1007/s11277-008-9461-x

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