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In this paper, the authors derive simple closed-form expressions that closely approximate the call completion probability in a wireless cellular network under generalized gamma distributed cell dwell time and call holding time with arbitrary distribution. The derived expressions are given in terms of the moment generating function of the call holding time and only require finite first and second moments of the cell dwell time distribution. In the performance analysis of wireless networks, the duration of time that a Mobile User (MU) dwells under the radio coverage of a base station is called the Cell Dwell Time (CDT).
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