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Real-Valued Orthogonal Sequences for Iterative Channel Estimation in MIMO-FBMC Systems

Zhang, Jing, Hu, Su, Liu, Zilong, Wang, Pei, Xiao, Pei and Gao, Yuan (2019) Real-Valued Orthogonal Sequences for Iterative Channel Estimation in MIMO-FBMC Systems IEEE Access, 4. pp. 1-10.

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Abstract

In this paper, we present a novel sequence design for efficient channel estimation in multiple input multiple output filterbank multicarrier (MIMO-FBMC) system with offset QAM modulation. Our proposed sequences, transmitted over one FBMC/OQAM symbol, are real-valued in the frequency domain and display zero-correlation zone properties in the time-domain. The latter property enables optimal channel estimation for a least-square estimator in frequency-selective fading channels. To further improve the system performance, we mitigate the data interference by an iterative feedback loop between channel estimation and FBMC demodulation. Simulation results validate that our proposed real-valued orthogonal sequences and the iterative channel estimation and demodulation scheme provide a practical solution for enhanced performance in preamble-based MIMO-FBMC systems.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
NameEmailORCID
Zhang, Jingjing.zhang@surrey.ac.uk
Hu, Su
Liu, Zilongzilong.liu@surrey.ac.uk
Wang, Pei
Xiao, PeiP.Xiao@surrey.ac.uk
Gao, Yuan
Date : 2019
DOI : 10.1109/ACCESS.2019.2919118
Copyright Disclaimer : © 2019 IEEE. Translations and content mining are permitted for academic research only. Personal use is also permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information.
Uncontrolled Keywords : MIMO-FBMC; Channel estimation; Preamble; Real-valued orthogonality; Zero-correlation zone sequences; Feedback iteration loop; Training; Interference; Transmitting antennas; OFDM; Time-frequency analysis
Depositing User : Clive Harris
Date Deposited : 05 Jun 2019 10:46
Last Modified : 05 Jun 2019 10:46
URI: http://epubs.surrey.ac.uk/id/eprint/851937

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