Proceedings of the International Conference on Computer Information Systems and Industrial Applications

Study on Adaptive Channel Estimation in OFDM Systems Based on DSP/FPGA

Authors
L. Ye, Y.C Zhang
Corresponding Author
L. Ye
Available Online June 2015.
DOI
https://doi.org/10.2991/cisia-15.2015.35How to use a DOI?
Keywords
OFDM systems; direct decision estimation; nerve-cell network; channel estimation
Abstract
In order to solve channel estimation problem in OFDM (orthogonal frequency division multiplexing) systems, a decision–directed method is proposed for channel estimation and equalization based on OFDM. The proposed method uses a received subcarrier-symbol to represent the competitive neural network, uses a nerve cell of the neural network to estimate adaptively the variation weight value, and then estimates the channel according to the channel weight value. Finally the channel equalization is reached by removing the constellation symmetry to compensate the nonlinearity effect. This method does not require the prearrangement knowledge about the wireless communication channel. Simulations and actual test show that the proposed method achieves very good channel estimation and performance equalization.
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Proceedings
International Conference on Computer Information Systems and Industrial Applications
Part of series
Advances in Computer Science Research
Publication Date
June 2015
ISBN
978-94-62520-72-1
DOI
https://doi.org/10.2991/cisia-15.2015.35How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - L. Ye
AU  - Y.C Zhang
PY  - 2015/06
DA  - 2015/06
TI  - Study on Adaptive Channel Estimation in OFDM Systems Based on DSP/FPGA
BT  - International Conference on Computer Information Systems and Industrial Applications
PB  - Atlantis Press
UR  - https://doi.org/10.2991/cisia-15.2015.35
DO  - https://doi.org/10.2991/cisia-15.2015.35
ID  - Ye2015/06
ER  -