Joint channel tracking and symbol detection for OFDM systems with Kalman filtering

Adnan Şen, Hakan A. Çirpan*, Erdal Panayirci

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

This paper proposes a new joint channel tracking and symbol detection scheme for pilot symbol-assisted OFDM systems in multipath fading. The proposed scheme uses Kalman filters for both channel tracking and subsequent equalization which are combined in the coupled estimator structure. Modelling the multipath fading channel as random processes to describe channel variations in a general AR framework lends itself to a state-space representation that enables the application of Kalman filtering for the tracking of channel variations. However, the proposed tracking algorithm requires knowledge of the transmitted symbols. This implies that an iterative method should be sought to obtain alternatively either channel or transmitted symbols. To compose the coupled estimator structure, a linear Kalman filter equalizer with the corresponding state-space model is therefore proposed for the detection of transmitted symbols. With the proposed Kalman filters, iterative structure is utilized to decode transmitted symbols and subsequently to track channel parameters. Finally, the performance of the proposed method is investigated through the experimental results.

Original languageEnglish
Pages (from-to)317-327
Number of pages11
JournalAEU - International Journal of Electronics and Communications
Volume57
Issue number5
DOIs
Publication statusPublished - 2003
Externally publishedYes

Funding

Adnan S¸ en, Hakan A. Çırpan, Department of Electrical Engineering, Istanbul University, Avcilar, 34850 Istanbul, Turkey. Erdal Panayırcı, Department of Electronics Engineering, IS¸IK University, Maslak 80670, Istanbul, Turkey. Correspondence to: H. A. Çırpan. E-mail: [email protected] ∗ This work was supported in part by The Research Fund of The University of Istanbul, Project numbers: UDP-45/24072002, 1680/15082001and The Scientific and Technical Council of Turkey (TUBITAK) Project number: 100EE006.

FundersFunder number
Scientific and Technical Council of Turkey
TUBITAK100EE006
University of IstanbulUDP-45/24072002

    Keywords

    • Joint channel estimation and symbol detection
    • OFDM Systems

    Fingerprint

    Dive into the research topics of 'Joint channel tracking and symbol detection for OFDM systems with Kalman filtering'. Together they form a unique fingerprint.

    Cite this