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- W4205863305 abstract "We develop extremely tight novel approximations, lower bounds and upper bounds for the Gaussian <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$Q$ </tex-math></inline-formula> -function and offer multiple alternatives for the coefficient sets thereof, which are optimized in terms of the four most relevant criteria: minimax absolute/relative error and total absolute/relative error. To minimize error maximum, we modify the classic Remez algorithm to comply with the challenging nonlinearity that pertains to the proposed expression for approximations and bounds. On the other hand, we minimize the total error numerically using the quasi-Newton algorithm. The proposed approximations and bounds are so well matching to the actual <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$Q$ </tex-math></inline-formula> -function that they can be regarded as virtually exact in many applications since absolute and relative errors of 10 <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>−9</sup> and 10 <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>−5</sup> , respectively, are reached with only ten terms. The significant advance in accuracy is shown by numerical comparisons with key reference cases." @default.
- W4205863305 created "2022-01-26" @default.
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- W4205863305 date "2022-03-01" @default.
- W4205863305 modified "2023-09-26" @default.
- W4205863305 title "Generalized Karagiannidis–Lioumpas Approximations and Bounds to the Gaussian <i>Q</i>-Function With Optimized Coefficients" @default.
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- W4205863305 doi "https://doi.org/10.1109/lcomm.2021.3139372" @default.
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