Nakagami-m分布m參數(shù)廣義矩估計(jì)器的近似閉式解
Approximate Close Form Expression for Generalized Moment-Based Nakagami-m Estimation
-
摘要: Nakagami-m分布是描述無(wú)線多徑小尺度衰落的有力工具，有很多文獻(xiàn)研究其m參數(shù)的估計(jì)問(wèn)題。本文研究一類稱作為廣義矩估計(jì)器的Nakagami-m參數(shù)估計(jì)器，在推導(dǎo)一類超越函數(shù)的近似表示式的基礎(chǔ)上，給出廣義矩估計(jì)器超越方程的近似閉式解。理論分析和數(shù)值仿真結(jié)果表明，近似閉式解應(yīng)用于低階矩估計(jì)器，不僅計(jì)算簡(jiǎn)單，其性能也基本沒(méi)有變化。本文給出的一類超越函數(shù)的近似表示式具有十分廣泛的用途。
-
關(guān)鍵詞:
- Nakagami-m分布;參數(shù)估計(jì);廣義矩估計(jì)
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. -
Zhang Q T. A note on the estimation of Nakagami-m fading parameter[J].IEEE, Commun. Lett.2002, 6(6):237-238[2]Cheng J, Beaulieu N. Maximum-likelihood based estimation of[3]the Nakagami m parameter. IEEE Commun. Lett., 2001, 5(3): 101-103.[4]Abdi A, Kaveh M. Performance comparison of three different estimators for the Nakagami m parameter using Monte Carlo simulation[J].IEEE Commun. Lett.2000, 4(4):119-121[5]Bowman K O, Shenton L R. Properties of Estimators for the Gamma Distribution. New York: Marcel Dekker, 1988: 46.[6]Cheng J, Beaulieu N. Generalized moment estimators for the Nakagami fading parameters[J].IEEE Commun. Lett.2002, 6 (4):144-146[7]Cheng Julian, Beaulieu N C. Moment-based estimation of the Nakagami-m fading parameter. PACRIM. 2001 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, Kitakyushu, Japan: 26-28 Aug. 2001. vol.2: 361-364.[8]Tepedelenlioglu C. Analytical performance analysis of moment-based estimators of the Nakagami parameter. Proceedings. Vehicular Technology Conference, 2002. VTC 2002-Fall. 2002 IEEE 56th, New Delhi, 24-28 Sept. 2002, vol.3: 1471-1474.[9]張賢達(dá). 現(xiàn)代信號(hào)處理. 北京：清華大學(xué)出版社，1994, 第9章.[10]王元等. 數(shù)學(xué)手冊(cè). 北京: 高等教育出版社，1974. -
計(jì)量
- 文章訪問(wèn)數(shù): 2531
- HTML全文瀏覽量: 82
- PDF下載量: 834
- 被引次數(shù): 0
下載:
