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- W4288416405 abstract "In this work, we evaluate the outage probability (OP) for L-branch equal gain combining (EGC) diversity receivers operating over fading channels, i.e. equivalently the cumulative distribution function (CDF) of the sum of the L channel envelopes. In general, closed form expressions of OP values are unobtainable. The use of Monte Carlo (MC) simulations is not considered a good alternative as it requires a large number of samples for small values of OP, making MC simulations very expensive. In this paper, we use the concept of importance sampling (IS), being known to yield accurate estimates using fewer simulation runs. Our proposed IS scheme is essentially based on sample rejection where the IS probability density function (PDF) is the truncation of the underlying PDF over the L dimensional sphere. It assumes the knowledge of the CDF of the sum of the L channel gains in a closed-form expression. Such an assumption is not restrictive since it holds for various challenging fading models. We apply our approach to the case of independent Rayleigh, correlated Rayleigh, and independent and identically distributed Rice fading models. Next, we extend our approach to the interesting scenario of generalised selection combining receivers combined with EGC under the independent Rayleigh fading environment. For each case, we prove the desired bounded relative error property. Finally, we validate these theoretical results through some selected experiments." @default.
- W4288416405 created "2022-07-29" @default.
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- W4288416405 date "2019-03-13" @default.
- W4288416405 modified "2023-10-16" @default.
- W4288416405 title "An Accurate Sample Rejection Estimator for the Estimation of Outage Probability of EGC Receivers" @default.
- W4288416405 doi "https://doi.org/10.48550/arxiv.1903.05481" @default.
- W4288416405 hasPublicationYear "2019" @default.
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