Feedback-Iterative Channel Estimation Algorithm for Aeronautical Communication System
[1]ZHANG Jiankang,ZHAO Youyou,SHANG Yingbo,et al.Feedback-Iterative Channel Estimation Algorithm for Aeronautical Communication System[J].Journal of Zhengzhou University (Engineering Science),2020,41(02):1-6.[doi:10.13705/j.issn.1671-6833.2019.03.004]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
41卷
Number of periods:
2020 02
Page number:
1-6
Column:
Public date:
2020-05-31
- Title:
- Feedback-Iterative Channel Estimation Algorithm for Aeronautical Communication System
- Keywords:
- aeronautic communication; pilot; OFDM; channel estimation; feedback iterative
- CLC:
- -
- DOI:
- 10.13705/j.issn.1671-6833.2019.03.004
- Abstract:
- The existing channel estimation algorithms have witnessed the disadvantages of high estimation error due to the fast time-varying channel and large propagation delay in the aeronautical communication system. This paper proposed an feedback iterative channel estimation algorithm based on the two-path Rice channel model for the en-route scenario. The proposed algorithm only used a small pilot overhead for rough least square (LS) channel estimation and signal detection, after being modulated and encoded, the obtained signals were fed back to the channel estimator used as pilot symbols again. Finally, the proposed scheme was capable of converging to a stable performance with two iterations. The simulation results demonstrate that the proposed channel estimation scheme was capable of achieving about 2 dB mean square error when the signal-to-noise ratio (SNR) was less than 20 dB, which verified that this algorithm could improve the accuracy of the aeronautical channel estimation.
- References:
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Last Update:
2020-05-30