|Table of Contents|

[1] Huang Xuejun, Yu Songyu, Bi Houjie,. New subspace algorithm for blind channel estimation in OFDM systems [J]. Journal of Southeast University (English Edition), 2005, 21 (2): 132-135. [doi:10.3969/j.issn.1003-7985.2005.02.003]
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New subspace algorithm for blind channel estimation in OFDM systems()
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
21
Issue:
2005 2
Page:
132-135
Research Field:
Information and Communication Engineering
Publishing date:
2005-06-30

Info

Title:
New subspace algorithm for blind channel estimation in OFDM systems
Author(s):
Huang Xuejun Yu Songyu Bi Houjie
Institute of Image Communication and Information Processing, Shanghai Jiaotong University, Shanghai 200030, China
Keywords:
orthogonal frequency division multiplexing(OFDM) blind channel estimation subspace algorithm
PACS:
TN911.5
DOI:
10.3969/j.issn.1003-7985.2005.02.003
Abstract:
In order to increase the transmission efficiency, a subspace-based algorithm for blind channel estimation using second-order statistics is proposed in orthogonal frequency division multiplexing(OFDM)systems.Because the transmission equation of OFDM systems does not exactly have the desired structure to directly derive a subspace algorithm, the algorithm first divides the OFDM signals into three parts, then, by exploiting the redundancy introduced by the cyclic prefix(CP)in OFDM signals, a new equation with Toeplitz channel matrix is derived.Based on the equation, a new blind subspace algorithm is developed.Toeplitz structure eases the derivation of the subspace algorithm and practical computation.Moreover the algorithm does not change the existing OFDM system, is robust to channel order overdetermination, and the channel zero locations.The performances are demonstrated by simulation results.

References:

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Memo

Memo:
Biographies: Huang Xuejun(1967—), male, graduate;Bi Houjie(corresponding author), male, professor, bihj@njupt.edu.cn.
Last Update: 2005-06-20