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Joint Statistics of Partial Sums of Ordered i.n.d. Gamma Random Variables

Author

Listed:
  • Sung Sik Nam

    (Department of Electronic Engineering, Gachon University, Seongnam-si 13102, Republic of Korea)

  • Changseok Yoon

    (Smart Network Research Center, Electronics Center, Korea Electronics Technology Institute, 1599 Sangam-dong, Mapo-gu, Seoul 03924, Republic of Korea)

  • Seyeong Choi

    (Department of Information and Communication Engineering, Wonkwang University, Iksan-si 54538, Republic of Korea)

Abstract

From the perspective of wireless communication, as communication systems become more complex, order statistics have gained increasing importance, particularly in evaluating the performance of advanced technologies in fading channels. However, existing analytical methods are often too complex for practical use. In this research paper, we introduce innovative statistical findings concerning the sum of ordered gamma-distributed random variables. We examine various channel scenarios where these variables are independent but not-identically distributed. To demonstrate the practical applicability of our results, we provide a comprehensive closed-form expression for the statistics of the signal-to-interference-plus-noise ratio in a multiuser scheduling system. We also present numerical examples to illustrate the effectiveness of our approach. To ensure the accuracy of our analysis, we validate our analytical results through Monte Carlo simulations.

Suggested Citation

  • Sung Sik Nam & Changseok Yoon & Seyeong Choi, 2023. "Joint Statistics of Partial Sums of Ordered i.n.d. Gamma Random Variables," Mathematics, MDPI, vol. 11(20), pages 1-18, October.
    • Handle: RePEc:gam:jmathe:v:11:y:2023:i:20:p:4273-:d:1259175
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    References listed on IDEAS

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    1. Fu, Xiuwen & Wang, Ye & Yang, Yongsheng & Postolache, Octavian, 2022. "Analysis on cascading reliability of edge-assisted Internet of Things," Reliability Engineering and System Safety, Elsevier, vol. 223(C).
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