Joint Maximum Likelihood Estimation of Angular and Time-Delay MIMO Propagation Parameters

Author

Ribeiro, Cássio B. ; Richter, Andreas ; Koivunen, Visa

Author_Institution

Lab. of Signal Process., Helsinki Univ. of Technol., Espoo

fYear

2005

fDate

Oct. 28 2005-Nov. 1 2005

Firstpage

843

Lastpage

847

Abstract

In this paper we derive an estimator for the parameters of the concentrated (specular) propagation paths and of the distributed (diffuse) scattering component that are frequently observed in channel sounding measurements. We propose an iterative two step procedure alternating between the estimation of the parameters of the specular propagation paths and the parameters of the distributed scattering. For the distributed scattering, the estimator improves at first the estimates of the parameters of the exponential distribution in time-delay domain. Then, using the estimated time-delay parameters, the estimates of the parameters of the angular distributions are improved. The procedure is repeated and the parameters of specular and diffuse scattering components are refined, both in time-delay and angular domains

Keywords

3G mobile communication; MIMO systems; S-parameters; channel estimation; delay estimation; maximum likelihood estimation; wireless channels; angular distributions; distributed scattering component; exponential distribution; maximum likelihood estimation; specular propagation paths; time-delay MIMO propagation parameters; Acoustic propagation; Acoustic scattering; Antenna measurements; Covariance matrix; Exponential distribution; MIMO; Maximum likelihood estimation; Parameter estimation; Scattering parameters; Transceivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2005. Conference Record of the Thirty-Ninth Asilomar Conference on

Conference_Location

Pacific Grove, CA

ISSN

1058-6393

Print_ISBN

1-4244-0131-3

Type

conf

DOI

10.1109/ACSSC.2005.1599873

Filename

1599873