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[1] Jing Ya, Xu Xiaodong, Chen Ming, Cheng Shixin, et al. Iterative receivers for SFBC-OFDM systemswith adaptive training scheme [J]. Journal of Southeast University (English Edition), 2005, 21 (2): 127-131. [doi:10.3969/j.issn.1003-7985.2005.02.002]
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Iterative receivers for SFBC-OFDM systemswith adaptive training scheme()
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
21
Issue:
2005 2
Page:
127-131
Research Field:
Information and Communication Engineering
Publishing date:
2005-06-30

Info

Title:
Iterative receivers for SFBC-OFDM systemswith adaptive training scheme
Author(s):
Jing Ya Xu Xiaodong Chen Ming Cheng Shixin
National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
Keywords:
space-frequency block-coded orthogonal frequency division multiplexing(SFBC-OFDM) iterative receiver channel estimation adaptive training scheme
PACS:
TN911.5
DOI:
10.3969/j.issn.1003-7985.2005.02.002
Abstract:
This paper considers the design of iterative receivers for space-frequency block-coded orthogonal frequency division multiplexing(SFBC-OFDM)systems in unknown wireless dispersive fading channels.An iterative joint channel estimation and symbol detection algorithm is derived.In the algorithm, the channel estimator performs alternately in two modes.During the training mode, the channel state information(CSI)is obtained by a discrete-Fourier-transform-based channel estimator and the noise variance and covariance matrix of the channel response is estimated by the proposed method.In the data transmission mode, the CSI and transmitted data is obtained iteratively.In order to suppress the error propagation caused by a random error in identifying symbols, a simple error propagation detection criterion is proposed and an adaptive training scheme is applied to suppress the error propagation.Both theoretical analysis and simulation results show that this algorithm gives better bit-error-rate performance and saves the overhead of OFDM systems.

References:

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Memo

Memo:
Biographies: Jing Ya(1978—), female, graduate;Cheng Shixin(corresponding author), male, professor, sxcheng@seu.edu.cn.
Last Update: 2005-06-20