Nakagami-m分布m参数广义矩估计器的近似闭式解
Approximate Close Form Expression for Generalized Moment-Based Nakagami-m Estimation
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摘要: Nakagami-m分布是描述无线多径小尺度衰落的有力工具，有很多文献研究其m参数的估计问题。本文研究一类称作为广义矩估计器的Nakagami-m参数估计器，在推导一类超越函数的近似表示式的基础上，给出广义矩估计器超越方程的近似闭式解。理论分析和数值仿真结果表明，近似闭式解应用于低阶矩估计器，不仅计算简单，其性能也基本没有变化。本文给出的一类超越函数的近似表示式具有十分广泛的用途。Abstract: A number of publications address the issue of the m-parameter estimation in Nakagami-m fading. The purpose of this contribution is to tackle approximate close form expression for a class of generalized moment-based estimator since it is always a transcendental equation. The details of derivation process are given. Numerical results are presented to demonstrate that the approximate estimator is not only computationally efficient but also accurate enough when compared with other estimators.
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