Titre :

Channel equalization and ICI mitigation for OFDM systems in time selective channel

Auteur(s) :

Chennaoui, Maria [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Berbineau, Marion [Auteur]
Laboratoire Electronique, Ondes et Signaux pour les Transports [INRETS/LEOST]
Rivenq, Atika [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Assaad, Jamal [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]

Titre de la manifestation scientifique :

The 2005 IEEE Annual Conference Wireless and Micrwave Technology

Ville :

Clearwater Beach, FL

Pays :

Etats-Unis d'Amérique

Date de début de la manifestation scientifique :

2005-04-06

Titre de l’ouvrage :

Proceedings of the 7th Annual IEEE Wireless and Microwave Technology Conference, WAMI 2005

Éditeur :

IEEE, Piscataway, NJ, USA

Date de publication :

2005

Mot(s)-clé(s) en anglais :

OFDM
Decision feedback equalizers
Kalman filters
Degradation
Frequency estimation
Channel estimation
Intersymbol interference
Frequency-selective fading channels
Transmitters
Bit error rate

Discipline(s) HAL :

Sciences de l'ingénieur [physics]

Résumé en anglais : [en]

OFDM is a powerful transmission technique to achieve high data rates and to suppress intersymbol interference (ISI) in frequency-selective fading channel. However in wireless environment, especially in the case of high ...
Lire la suite >OFDM is a powerful transmission technique to achieve high data rates and to suppress intersymbol interference (ISI) in frequency-selective fading channel. However in wireless environment, especially in the case of high speed train, the channel is time variant because of the relative motion between the transmitter and receiver. The fast channel variations can he modeled by Doppler spread change over one symbol OFDM duration. In such propagation conditions, the orthogonality among subcarriers is destroyed, which result in intercarrier interference (ICI) that may degrades severely the bit error rate performance of OFDM systems. In this paper, we address adaptive channel equalization in OFDM systems Kalman filter for channel tracking and decision feedback equalizer (DFE) is proposed to reduce the performance degradation due to ICI. Simulation and performances of the proposed equalized OFDM system are earned out for different mobile speedLire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

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

Source :

Harvested from HAL