BEM-PSP for single-carrier and SC-FDMA communication over a doubly selective fading channel
In this paper, we consider pilot-aided channel estimation and equalization for single-carrier and single-carrier frequency division multiple-access (SC-FDMA) transmission over doubly-selective channels (DSC). To reduce the channel estimation (CE) parameters, the DSC is modelled using a complex-expon...
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sg-ntu-dr.10356-1649762023-03-10T00:59:34Z BEM-PSP for single-carrier and SC-FDMA communication over a doubly selective fading channel Liu, Xiaobei Anand, Kushal Guan, Yong Liang Deng, Li Fan, Pingzhi Zhou, Zhengchun School of Electrical and Electronic Engineering Temasek Laboratories @ NTU Engineering::Electrical and electronic engineering::Wireless communication systems Doubly-Selective Channels Frequency-Selective In this paper, we consider pilot-aided channel estimation and equalization for single-carrier and single-carrier frequency division multiple-access (SC-FDMA) transmission over doubly-selective channels (DSC). To reduce the channel estimation (CE) parameters, the DSC is modelled using a complex-exponential basis expansion model (CX-BEM) with non-uniform BEM frequencies. We optimize the CX-BEM basis functions using CE error minimization as the objective. As a result, the channel modelling error is greatly reduced. Next, we propose a BEM-based per-survivor processing (PSP) technique and combine it with a decision-directed channel estimator to obtain a channel-tracking equalizer at the receiver. The resultant BEM-PSP receiver significantly improves the channel estimation mean square error (MSE) and the bit error rates (BER) performance in fast fading multi-path channel, thanks to the channel tracking capability embedded within its Viterbi equalizer. Finally, we employ cross-frame channel interpolation, and power distribution between the data and pilot symbols to further improve the system performance at high fading rates. Extensive simulation results show that our BEM-PSP receiver outperforms many existing methods and approaches close to an ideal receiver with perfectly known CSI under various fading scenarios. Nanyang Technological University This work was supported by the NRF–NSFC Project under Grant NRF2016NRF-NSFC001-089. The work of Xiaobei Liu and Yong Liang Guan was supported by Temasek Laboratories, NTU, through the Signal Research Programme 3 under Grant DSOCL17187. The work of Pingzhi Fan was supported in part by the NSFC Project under Grant 61661146003 and Grant 61731017, and in part by the 111 Project under Grant 111-2-14. The work of Zhengchun Zhou was supported in part by the Application Fundamental Research Plan Project of Sichuan Province under Grant 2018JY0046. 2023-03-10T00:59:34Z 2023-03-10T00:59:34Z 2020 Journal Article Liu, X., Anand, K., Guan, Y. L., Deng, L., Fan, P. & Zhou, Z. (2020). BEM-PSP for single-carrier and SC-FDMA communication over a doubly selective fading channel. IEEE Transactions On Wireless Communications, 19(6), 3924-3937. https://dx.doi.org/10.1109/TWC.2020.2979131 1536-1276 https://hdl.handle.net/10356/164976 10.1109/TWC.2020.2979131 2-s2.0-85087149574 6 19 3924 3937 en DSOCL17187 IEEE Transactions on Wireless Communications © 2020 IEEE. All rights reserved. |
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Engineering::Electrical and electronic engineering::Wireless communication systems Doubly-Selective Channels Frequency-Selective Liu, Xiaobei Anand, Kushal Guan, Yong Liang Deng, Li Fan, Pingzhi Zhou, Zhengchun BEM-PSP for single-carrier and SC-FDMA communication over a doubly selective fading channel |
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In this paper, we consider pilot-aided channel estimation and equalization for single-carrier and single-carrier frequency division multiple-access (SC-FDMA) transmission over doubly-selective channels (DSC). To reduce the channel estimation (CE) parameters, the DSC is modelled using a complex-exponential basis expansion model (CX-BEM) with non-uniform BEM frequencies. We optimize the CX-BEM basis functions using CE error minimization as the objective. As a result, the channel modelling error is greatly reduced. Next, we propose a BEM-based per-survivor processing (PSP) technique and combine it with a decision-directed channel estimator to obtain a channel-tracking equalizer at the receiver. The resultant BEM-PSP receiver significantly improves the channel estimation mean square error (MSE) and the bit error rates (BER) performance in fast fading multi-path channel, thanks to the channel tracking capability embedded within its Viterbi equalizer. Finally, we employ cross-frame channel interpolation, and power distribution between the data and pilot symbols to further improve the system performance at high fading rates. Extensive simulation results show that our BEM-PSP receiver outperforms many existing methods and approaches close to an ideal receiver with perfectly known CSI under various fading scenarios. |
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School of Electrical and Electronic Engineering |
author_facet |
School of Electrical and Electronic Engineering Liu, Xiaobei Anand, Kushal Guan, Yong Liang Deng, Li Fan, Pingzhi Zhou, Zhengchun |
format |
Article |
author |
Liu, Xiaobei Anand, Kushal Guan, Yong Liang Deng, Li Fan, Pingzhi Zhou, Zhengchun |
author_sort |
Liu, Xiaobei |
title |
BEM-PSP for single-carrier and SC-FDMA communication over a doubly selective fading channel |
title_short |
BEM-PSP for single-carrier and SC-FDMA communication over a doubly selective fading channel |
title_full |
BEM-PSP for single-carrier and SC-FDMA communication over a doubly selective fading channel |
title_fullStr |
BEM-PSP for single-carrier and SC-FDMA communication over a doubly selective fading channel |
title_full_unstemmed |
BEM-PSP for single-carrier and SC-FDMA communication over a doubly selective fading channel |
title_sort |
bem-psp for single-carrier and sc-fdma communication over a doubly selective fading channel |
publishDate |
2023 |
url |
https://hdl.handle.net/10356/164976 |
_version_ |
1761782069487206400 |