A Novel OFDM Power Based Estimation for Dynamic Channel Tracking in Downlink LTE

Author

Kalakech, Ali ; Brunel, Loïc ; Berbineau, Marion ; Mottier, David

Author_Institution

Univ. Lille Nord de France, Lille, France

fYear

2012

fDate

3-6 Sept. 2012

Firstpage

1

Lastpage

5

Abstract

In this paper we compare and test several channel estimation algorithms in the case of LTE (Long Term Evolution) Systems applied in a high mobility environment. In particular, we propose a novel algorithm, based on the observation of OFDM block energy, to perform a semi-blind tracking of the channel between pilot blocks. This algorithm is compared to more traditional approach based on 1D estimation and interpolation. In addition, an Expectation Maximization (EM) is used to improve the overall channel estimation.

Keywords

Long Term Evolution; OFDM modulation; channel estimation; expectation-maximisation algorithm; interpolation; mobility management (mobile radio); 1D estimation; Long Term Evolution; OFDM block energy; OFDM power based estimation; channel estimation; downlink LTE; dynamic channel tracking; expectation maximization; high mobility environment; interpolation; pilot blocks; semiblind tracking; Bit error rate; Channel estimation; Delay; Estimation; Interpolation; OFDM; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Fall), 2012 IEEE

Conference_Location

Quebec City, QC

ISSN

1090-3038

Print_ISBN

978-1-4673-1880-8

Electronic_ISBN

1090-3038

Type

conf

DOI

10.1109/VTCFall.2012.6399157

Filename

6399157