Noise power estimation for broadcasting OFDM systems

The estimation of the noise power is a core issue in wireless communication systems. In broadcasting, every OFDM frame starts with a preamble symbol, which facilitates the noise power estimation. However, the performance of preamble-based noise estimation schemes worsens in fast-changing environment...

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Main Authors: Khan, A.M., Jeoti, V., Rehman, M., Jilani, M.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.20073 /
Published: Institute of Electrical and Electronics Engineers Inc. 2017
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85021781285&doi=10.1109%2fCCECE.2017.7946746&partnerID=40&md5=366c495676cc259ae2909d6ada4601eb
http://eprints.utp.edu.my/20073/
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spelling utp-eprints.200732018-04-22T14:39:36Z Noise power estimation for broadcasting OFDM systems Khan, A.M. Jeoti, V. Rehman, M. Jilani, M. The estimation of the noise power is a core issue in wireless communication systems. In broadcasting, every OFDM frame starts with a preamble symbol, which facilitates the noise power estimation. However, the performance of preamble-based noise estimation schemes worsens in fast-changing environments and cannot efficiently track the noise variation well. In order to track the noise variation symbol to symbol, pilot-based schemes would be more fruitful. Accordingly, in this paper, we propose a novel pilot-based noise power estimation scheme for OFDM systems that estimate the noise power for each data symbol. It makes use of the pilot subcarriers reserved for channel estimation in the data symbol. The proposed algorithm computes the circular correlation between received signal and comb type sub-pilot subsequence twice to generate the noise power. Compared with the conventional preamble-based scheme, the proposed pilot-based noise algorithm generates near-ideal accuracy at different values of signal-to-noise ratio (SNR). Without the additional overheads of the preamble, the scheme offers the significant saving of computation over a conventional time domain noise estimator. © 2017 IEEE. Institute of Electrical and Electronics Engineers Inc. 2017 Article PeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85021781285&doi=10.1109%2fCCECE.2017.7946746&partnerID=40&md5=366c495676cc259ae2909d6ada4601eb Khan, A.M. and Jeoti, V. and Rehman, M. and Jilani, M. (2017) Noise power estimation for broadcasting OFDM systems. Canadian Conference on Electrical and Computer Engineering . http://eprints.utp.edu.my/20073/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description The estimation of the noise power is a core issue in wireless communication systems. In broadcasting, every OFDM frame starts with a preamble symbol, which facilitates the noise power estimation. However, the performance of preamble-based noise estimation schemes worsens in fast-changing environments and cannot efficiently track the noise variation well. In order to track the noise variation symbol to symbol, pilot-based schemes would be more fruitful. Accordingly, in this paper, we propose a novel pilot-based noise power estimation scheme for OFDM systems that estimate the noise power for each data symbol. It makes use of the pilot subcarriers reserved for channel estimation in the data symbol. The proposed algorithm computes the circular correlation between received signal and comb type sub-pilot subsequence twice to generate the noise power. Compared with the conventional preamble-based scheme, the proposed pilot-based noise algorithm generates near-ideal accuracy at different values of signal-to-noise ratio (SNR). Without the additional overheads of the preamble, the scheme offers the significant saving of computation over a conventional time domain noise estimator. © 2017 IEEE.
format Article
author Khan, A.M.
Jeoti, V.
Rehman, M.
Jilani, M.
spellingShingle Khan, A.M.
Jeoti, V.
Rehman, M.
Jilani, M.
Noise power estimation for broadcasting OFDM systems
author_sort Khan, A.M.
title Noise power estimation for broadcasting OFDM systems
title_short Noise power estimation for broadcasting OFDM systems
title_full Noise power estimation for broadcasting OFDM systems
title_fullStr Noise power estimation for broadcasting OFDM systems
title_full_unstemmed Noise power estimation for broadcasting OFDM systems
title_sort noise power estimation for broadcasting ofdm systems
publisher Institute of Electrical and Electronics Engineers Inc.
publishDate 2017
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85021781285&doi=10.1109%2fCCECE.2017.7946746&partnerID=40&md5=366c495676cc259ae2909d6ada4601eb
http://eprints.utp.edu.my/20073/
_version_ 1741196312831852544
score 11.62408

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