Citation
Abstract
Satellite channels suffer from heavy fading due to the atmospheric impairments at high frequencies. Therefore, channel estimation is essential for coherent detection and demodulation in satellite-coded systems. The conventional minimum mean square error (MMSE) estimator (the theoretical upper bound) requires a priori knowledge about the channel statistics which is not feasible to obtain in a real transmission. Also, it suffers from high complexity. However, deep learning (DL) estimators do not require any information about the channel statistics. Therefore, in this paper, two DL-based channel estimators are proposed for digital and video broadcasting second generation extension (DVB-S2X) system with less complexity than the MMSE estimator. In particular, the bidirectional long-short term memory (BLSTM) and the gated recurrent unit (GRU) are adopted in our proposed estimators which are termed as and , respectively. The proposed estimators evaluated over two satellite fading channels; one with heavy fading and the other with low fading. Moreover, these estimators are compared with the conventional estimators, the least square (LS) and the MMSE, in terms of the normalized mean square error (NMSE) and the bit error rate (BER). Simulation results show that the proposed DL-based estimators have better performance than the LS estimator and the has better performance than the estimator in terms of NMSE and BER with both satellite channels.
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Additional Metadata
Item Type: | Article |
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Divisions: | Faculty of Engineering |
DOI Number: | https://doi.org/10.1016/j.comnet.2023.110022 |
Publisher: | Elsevier |
Keywords: | Deep learning; Dvb-S2X; Channel estimation; Gated recurrent unit (GRU); Bidirectional long-short term memory (BLSTM); Normalized mean square error (NMSE); Bit error rate (BER) |
Depositing User: | Ms. Nur Aina Ahmad Mustafa |
Date Deposited: | 07 Oct 2024 01:42 |
Last Modified: | 07 Oct 2024 01:42 |
Altmetrics: | http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.comnet.2023.110022 |
URI: | http://psasir.upm.edu.my/id/eprint/107675 |
Statistic Details: | View Download Statistic |
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