Channel Estimation Scheme in Oversampled Frequency Domain for FBMC-QAM Systems Based on Prototype Filter Set

This paper proposes a channel estimation scheme for the filter-bank multicarrier systems with quadrature amplitude modulation (FBMC-QAM). Under frequency selective channels, the adjacent data symbols cause interference to the pilot symbols in FBMC-QAM systems and degrade the performance of the chann...

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Published in:IEEE transactions on vehicular technology 2019-01, Vol.68 (1), p.728-739
Main Authors: Lee, Taehyun, Sim, Dongkyu, Seo, Bongsung, Lee, Chungyong
Format: Article
Language:English
Subjects:
Channel estimation
FBMC-QAM
Filter banks
Frequency domain analysis
Interference
New waveform
OFDM
oversampled frequency domain
Performance degradation
pre-processing
Prototypes
Quadrature amplitude modulation
Receivers
Symbols
Transceivers
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cited_by cdi_FETCH-LOGICAL-c291t-485e9d53e2d54e2876fc3399c437c3283c2e6602693a516b3cf6f34829c776393
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creator Lee, Taehyun
Sim, Dongkyu
Seo, Bongsung
Lee, Chungyong
description This paper proposes a channel estimation scheme for the filter-bank multicarrier systems with quadrature amplitude modulation (FBMC-QAM). Under frequency selective channels, the adjacent data symbols cause interference to the pilot symbols in FBMC-QAM systems and degrade the performance of the channel estimation. To handle this problem, we analyze the interference of the pilot symbols in an oversampled frequency domain before the receiver filtering process. Exploiting the interference analysis, we propose a pilot symbol configuration and condition of filter coefficients to cancel the inter-carrier interference. Moreover, we apply a time domain data symbol precoding to eliminate inter-symbol interference. The simulation results show that the proposed scheme outperforms conventional channel estimation schemes.
doi_str_mv 10.1109/TVT.2018.2885078
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Under frequency selective channels, the adjacent data symbols cause interference to the pilot symbols in FBMC-QAM systems and degrade the performance of the channel estimation. To handle this problem, we analyze the interference of the pilot symbols in an oversampled frequency domain before the receiver filtering process. Exploiting the interference analysis, we propose a pilot symbol configuration and condition of filter coefficients to cancel the inter-carrier interference. Moreover, we apply a time domain data symbol precoding to eliminate inter-symbol interference. 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source IEEE Electronic Library (IEL) Journals
subjects Channel estimation
FBMC-QAM
Filter banks
Frequency domain analysis
Interference
New waveform
OFDM
oversampled frequency domain
Performance degradation
pre-processing
Prototypes
Quadrature amplitude modulation
Receivers
Symbols
Transceivers
title Channel Estimation Scheme in Oversampled Frequency Domain for FBMC-QAM Systems Based on Prototype Filter Set
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