Research Article
A New DCT based Channel Estimation Algorithm for OFDM Systems
|
International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
|
| Volume 58 - Issue 16 |
| Published: November 2012 |
| Authors: Antony Nycil P.A., Anoop E.G. |
10.5120/9367-3823
|
Antony Nycil P.A., Anoop E.G. . A New DCT based Channel Estimation Algorithm for OFDM Systems. International Journal of Computer Applications. 58, 16 (November 2012), 26-30. DOI=10.5120/9367-3823
@article{ 10.5120/9367-3823,
author = { Antony Nycil P.A.,Anoop E.G. },
title = { A New DCT based Channel Estimation Algorithm for OFDM Systems },
journal = { International Journal of Computer Applications },
year = { 2012 },
volume = { 58 },
number = { 16 },
pages = { 26-30 },
doi = { 10.5120/9367-3823 },
publisher = { Foundation of Computer Science (FCS), NY, USA }
}
%0 Journal Article
%D 2012
%A Antony Nycil P.A.
%A Anoop E.G.
%T A New DCT based Channel Estimation Algorithm for OFDM Systems%T
%J International Journal of Computer Applications
%V 58
%N 16
%P 26-30
%R 10.5120/9367-3823
%I Foundation of Computer Science (FCS), NY, USA
Abstract
This paper deals with the estimation of the channel in orthogonal frequency division multiplexed systems. In this paper, a new DCT-based pilot-symbol-aided channel estimation method is proposed. The energy leakage in multipath channel with non-sample-spaced time delays is eliminated here. The proposed method uses symmetric property to extend the LS estimate in frequency domain to remove the effects of non-sample spaced time delays. The computer simulation results demonstrate that the new method can reduce the leakage energy efficiently, and the performance of the new channel estimation method is better than the LS and improved DFT algorithm.
References
- Sinem Coleri, Mustafa Ergen, Anuj Puri, and Ahmad Bahai, "Channel Estimation Techniques Based on Pilot Arrangement in OFDM Systems," IEEE transactions on broadcasting, vol. 48, no. 3, september 2002.
- Sinem Coleri, Mustafa Ergen,Anuj Puri, Ahmad Bahai, "A Study of Channel Estimation in OFDM Systems," Vehicular Technology Conference, 2002. Proceedings. VTC 2002-Fall. 2002 IEEE 56th, Page(s): 894 - 898 vol. 2.
- Xiaodai Dong, Wu-Sheng Lu, Anthony C. K. "Linear Interpolation in Pilot Symbol Assisted Channel Estimation for OFDM" IEEE transactions on wireless communications, VOL. 6, NO. 5, MAY 2007
- Zhang Jie, Huang Liqun, "An Improved DFT-based Channel Estimation Algorithm For MIMO-OFDM Systems," Consumer Electronics, Communications and Networks (CECNet), 2011 International Conference on Page(s): 3929 – 3932.
- Saqib Saleem, Qamar-ul-Islam, "On Comparison of DFT-Based and DCT-Based Channel Estimation for OFDM System," IJCSI International Journal of Computer Science Issues, Vol. 8, Issue 3, No. 2, May 2011.
- Moussa Diallo, Rodrigue Rabineau, Laurent Cariou, Maryline Hélard. "Transform Domain based Channel Estimation for 3GPP/LTE Systems" Communications and Networking September 2010.
- Y. Wang, L. Li, P. Zhang and Z. Liu, "Channel estimation for OFDM systems in non-sample-spaced multipath channels," Electronics Letters, vol. 45, January. 2009.
- H. Kobayaki and k. Mori. "Proposal of OFDM channel estimation method using discrete cosine transform". Personal, Indoor and Mobile Radio Communications, 2004. Vol. 3 . Page(s):1797 – 1801.
- T. Daisuke, T. Yasuhiko, and S. Kasumi. "Channel Estimation Scheme with low complexity Discrete Cosine Transformation in MIMO-OFDM System". Vehicular Technology Conference, 2007. Page(s): 486 – 490.
- Jan-Jaap van de Beek, O. Edfors, and M. Sandell, "On channel estimation in OFDM systems," Presented at in proceedings of Vehicular Technology, Chicago, pp. 815-819, 1995.
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