Title :

Joint Carrier Frequency Offset and Fast Time-varying Channel Estimation for MIMO-OFDM Systems

Author(s) :

Simon, Eric [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Hijazi, Hussein [Auteur]
Grenoble Images Parole Signal Automatique [GIPSA-lab]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Ros, Laurent [Auteur]
GIPSA - Communication Information and Complex Systems [GIPSA-CICS]

Conference title :

CSNDSP 2010 - 7th IEEE IET International Sumposium on Communication Systems, Networks and Digital Signal Processing

City :

Newcastle

Country :

Royaume-Uni

Start date of the conference :

2010-07-21

Book title :

Proceedings of the 7th CSNDSP 2010

Publication date :

2010-07

English keyword(s) :

Time-varying channel
carrier frequency estimation
MIMO-OFDM systems
Rayleigh fast fading channel estimation
Basis Expansion Model (BEM)

HAL domain(s) :

Sciences de l'ingénieur [physics]/Traitement du signal et de l'image [eess.SP]
Informatique [cs]/Traitement du signal et de l'image [eess.SP]

English abstract : [en]

In this paper, a novel pilot-aided iterative algorithm is developed for MIMO-OFDM systems operating in fast time-varying environment. An L-path channel model with known path delays is considered to jointly estimate the ...
Show more >In this paper, a novel pilot-aided iterative algorithm is developed for MIMO-OFDM systems operating in fast time-varying environment. An L-path channel model with known path delays is considered to jointly estimate the multi-path Rayleigh channel complex gains and Carrier Frequency Offset (CFO). Each complex gain time-variation within one OFDM symbol is approximated by a Basis ExpansionModel (BEM) representation. An auto-regressive (AR) model is built for the parameters to be estimated. The algorithm performs recursive estimation using Extended Kalman Filtering. Hence, the channel matrix is easily computed and the data symbol is estimated with free intersub-carrier-interference (ICI) when the channel matrix is QR-decomposed. It is shown that only one iteration is sufficient to approach the performance of the ideal case for which the knowledge of the channel response and CFO is available.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL