Your browser does not support JavaScript!
http://iet.metastore.ingenta.com
1887

Kalman-filter-based channel estimation for orthogonal frequency-division multiplexing systems in time-varying channels

Kalman-filter-based channel estimation for orthogonal frequency-division multiplexing systems in time-varying channels

For access to this article, please select a purchase option:

Buy article PDF
£12.50
(plus tax if applicable)
Add to cart
Buy Knowledge Pack
10 articles for £75.00
(plus taxes if applicable)
Add to cart

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Your details
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:
 
 
 
 
 
IET Communications — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

© The Institution of Engineering and Technology
Published

A low-complexity Kalman-filter-based channel estimation method for orthogonal frequency-division multiplexing systems is proposed. This method belongs to the pilot-symbol-aided parametric channel estimation method in which the channel responses are characterised as a collection of sparse propagation paths. Because of the slow variation of the signal subspace in the channel samples' correlation matrix, the estimation of channel parameters is translated into an unconstrained minimisation problem. Then, in order to solve this optimisation problem, a subspace tracking by Kalman filter is carried out, which is characterised in that the state equation and the measurement equation are constructed upon the constant signal subspace. Further, this Kalman-filter-based method is extended to the multi-antenna scenarios efficiently. Simulation results show that the proposal can effectively track the time variations in both the block fading channels and the Doppler frequency spread channels.

Inspec keywords: matrix algebra; antenna arrays; Kalman filters; OFDM modulation; correlation methods; optimisation; time-varying channels; channel estimation

Other keywords: optimisation problem; correlation matrix; orthogonal frequency-division multiplexing system; time-varying channel; multiantenna scenario; sparse propagation path; Kalman-filter-based channel estimation; pilot-symbol-aided parametric channel estimation method; block fading channel; Doppler frequency spread channel

Subjects: Communication channel equalisation and identification; Modulation and coding methods; Algebra; Filtering methods in signal processing; Antenna arrays; Optimisation techniques

References

    1. 1)
      • Y. Li , Z. Li , Y. Cai , Y. Xu . An improved channel estimation scheme for OFDM systems by tracking the subspace’, PIMRC 2003. IEEE , 1109 - 1113
    2. 2)
      • Schafhuber, D., Matz, G., Hlawatsch, F.: `Kalman tracking of time-varying channels in wireless MIMO-OFDM systems', Signals, Systems and Computers, Conf. Record of the Thirty-Seventh Asilomar Conference, November 2003, 2, p. 9–12, 1261–1265.
    3. 3)
      • T.S. Rappaport . (1996) Wireless comminications principles and practice.
    4. 4)
      • F. Shu , J. Lee , L.-N. Wu , G.-L. Zhao . Time-frequency channel estimation for digital amplitude modulation broadcasting systems based on OFDM. IEE Proc., Commun. , 259 - 264
    5. 5)
      • H. Yang . A road to future broadband wireless access: MIMO-OFDM-based air interface. IEEE Commun. Mag. , 53 - 60
    6. 6)
      • B. Yang . Projection approximation subspace tracking. IEEE Trans. Signal Process. , 95 - 107
    7. 7)
      • J.G. Proakis . (1995) Digital communications.
    8. 8)
      • K.Y. Han , S.W. Lee , J.-S. Lim , K.-M. Sung . Channel estimation for OFDM with fast fading channels by modified Kalman filter. IEEE Trans. Consumer Electron. , 443 - 449
    9. 9)
      • B. Muquet , M. de Courville , P. Duhamel . Subspace-based blind and semi-blind channel estimation for OFDM systems. IEEE Trans. Signal Proc. , 1699 - 1712
    10. 10)
      • B. Yang , K.B. Letaief , R.S. Cheng , Z. Cao . Channel estimation for OFDM transmission in multipath fading channels based on parametric channel modeling. IEEE Trans. Commun. , 467 - 478
    11. 11)
      • O. Simeone , Y. Bar-Ness , U. Spagnolini . Pilot-based channel estimation for OFDM systems by tracking the delay-subspace. IEEE Trans. Wirel. Commun. , 315 - 325
    12. 12)
      • Sternad, M., Aronsson, D.: `Channel estimation and prediction for adaptive OFDM downlinks', VTC 2003 Fall, IEEE, , 2, p. 1283–1283.
    13. 13)
      • S. Roy , C. Li . A subspace blind channel estimation method for OFDM systems without cyclic prefix. IEEE Trans. Wirel. Commun. , 572 - 579
    14. 14)
      • Recommendation ITU-R M.1225 Guidelines for Evaluation of Radio Transmission Technologies for IMT-2000 1997.
    15. 15)
      • S. Tomasin , A. Gorokhov , H. Yang , J.-P. Linnartz . Iterative interference cancellation and channel estimation for mobile OFDM. IEEE Trans. Wirel. Commun. , 238 - 245
http://iet.metastore.ingenta.com/content/journals/10.1049/iet-com_20070039
Loading

Related content

content/journals/10.1049/iet-com_20070039
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
Print this page
This is a required field
Please enter a valid email address