A MAP Estimator for the m Parameter in Nakagami Fading Ultra-Wide Bandwidth Indoor Channels

Author

Beaulieu, Norman C. ; Chen, Yunfei

Author_Institution

Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta.

Volume

6

Issue

3

fYear

2007

fDate

3/1/2007 12:00:00 AM

Firstpage

840

Lastpage

844

Abstract

A maximum a posteriori (MAP) estimator for the Nakagami m parameter in an ultra-wide bandwidth (UWB) indoor channel is proposed. Previous work exclusively studies maximum likelihood (ML) estimation and moment method (MM) estimation of the Nakagami m parameter. This letter derives the MAP estimator for the Nakagami m parameter by using the a priori probabilities of the Nakagami fading parameters in an indoor UWB channel. The performance of the MAP estimator is examined and compared with those of the ML estimator and the MM estimator. Numerical results demonstrate that the new MAP estimator is superior to the ML estimator and the MM estimator in an indoor UWB channel, especially when the sample size in the estimation is small

Keywords

Nakagami channels; indoor radio; maximum likelihood estimation; method of moments; ultra wideband communication; MAP estimator; Nakagami fading ultra-wide bandwidth indoor channels; Nakagami m parameter; a priori probabilities; maximum a posteriori estimator; maximum likelihood estimation; moment method estimation; Bandwidth; Delay; Fading; Gain measurement; Gaussian distribution; Maximum likelihood estimation; Moment methods; Nakagami distribution; Narrowband; Wireless communication;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2007.05511

Filename

4133870