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Pilot-Based Time Domain SNR Estimation for Broadcasting OFDM Systems

The estimation of signal-to-noise ratio (SNR) is a major issue in wireless orthogonal frequency-division multiplexing (OFDM) system. In OFDM system, each frame starts with a preamble symbol that facilitates the SNR estimation. However, the performance of preamble-based SNR estimation schemes worsens...

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Main Authors: Khan, A.M., Jeoti, V., Rehman, M.Z.U., Jilani, M.T., Chugtai, O., Rehmani, M.H.
Format: Article
Published: Hindawi Limited 2018
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048159750&doi=10.1155%2f2018%2f9319204&partnerID=40&md5=0a6dd5536e0253e1e13e55d09df13dda
http://eprints.utp.edu.my/21364/
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spelling my.utp.eprints.213642018-09-25T06:36:59Z Pilot-Based Time Domain SNR Estimation for Broadcasting OFDM Systems Khan, A.M. Jeoti, V. Rehman, M.Z.U. Jilani, M.T. Chugtai, O. Rehmani, M.H. The estimation of signal-to-noise ratio (SNR) is a major issue in wireless orthogonal frequency-division multiplexing (OFDM) system. In OFDM system, each frame starts with a preamble symbol that facilitates the SNR estimation. However, the performance of preamble-based SNR estimation schemes worsens in the fast-changing environment where channel changes symbol to symbol. Accordingly, in this paper, we propose a novel pilot-based SNR estimation scheme that optimally exploits the pilot subcarriers that are inserted in each data symbol of the OFDM frame. The proposed scheme computes the circular correlation between the received signal and the comb-type pilot sequence to obtain the SNR. The simulation results are compared with the conventional preamble-based Zadoff-Chu sequence SNR estimator. The results indicate that the proposed scheme generates near-ideal accuracy; especially in low SNR regimes, in terms of the normalized mean square error (NMSE). Moreover, this scheme offers a significant saving of computation over a conventional time domain SNR estimator. © 2018 Abid Muhammad Khan et al. Hindawi Limited 2018 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048159750&doi=10.1155%2f2018%2f9319204&partnerID=40&md5=0a6dd5536e0253e1e13e55d09df13dda Khan, A.M. and Jeoti, V. and Rehman, M.Z.U. and Jilani, M.T. and Chugtai, O. and Rehmani, M.H. (2018) Pilot-Based Time Domain SNR Estimation for Broadcasting OFDM Systems. Journal of Computer Networks and Communications, 2018 . http://eprints.utp.edu.my/21364/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description The estimation of signal-to-noise ratio (SNR) is a major issue in wireless orthogonal frequency-division multiplexing (OFDM) system. In OFDM system, each frame starts with a preamble symbol that facilitates the SNR estimation. However, the performance of preamble-based SNR estimation schemes worsens in the fast-changing environment where channel changes symbol to symbol. Accordingly, in this paper, we propose a novel pilot-based SNR estimation scheme that optimally exploits the pilot subcarriers that are inserted in each data symbol of the OFDM frame. The proposed scheme computes the circular correlation between the received signal and the comb-type pilot sequence to obtain the SNR. The simulation results are compared with the conventional preamble-based Zadoff-Chu sequence SNR estimator. The results indicate that the proposed scheme generates near-ideal accuracy; especially in low SNR regimes, in terms of the normalized mean square error (NMSE). Moreover, this scheme offers a significant saving of computation over a conventional time domain SNR estimator. © 2018 Abid Muhammad Khan et al.
format Article
author Khan, A.M.
Jeoti, V.
Rehman, M.Z.U.
Jilani, M.T.
Chugtai, O.
Rehmani, M.H.
spellingShingle Khan, A.M.
Jeoti, V.
Rehman, M.Z.U.
Jilani, M.T.
Chugtai, O.
Rehmani, M.H.
Pilot-Based Time Domain SNR Estimation for Broadcasting OFDM Systems
author_facet Khan, A.M.
Jeoti, V.
Rehman, M.Z.U.
Jilani, M.T.
Chugtai, O.
Rehmani, M.H.
author_sort Khan, A.M.
title Pilot-Based Time Domain SNR Estimation for Broadcasting OFDM Systems
title_short Pilot-Based Time Domain SNR Estimation for Broadcasting OFDM Systems
title_full Pilot-Based Time Domain SNR Estimation for Broadcasting OFDM Systems
title_fullStr Pilot-Based Time Domain SNR Estimation for Broadcasting OFDM Systems
title_full_unstemmed Pilot-Based Time Domain SNR Estimation for Broadcasting OFDM Systems
title_sort pilot-based time domain snr estimation for broadcasting ofdm systems
publisher Hindawi Limited
publishDate 2018
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048159750&doi=10.1155%2f2018%2f9319204&partnerID=40&md5=0a6dd5536e0253e1e13e55d09df13dda
http://eprints.utp.edu.my/21364/
_version_ 1738656279005495296
score 13.211869

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