The University of Southampton
University of Southampton Institutional Repository

Second-Order Channel Parameter Estimation Assisted Cancellation of Channel Variation-Induced Inter-Subcarrier Interference in OFDM Systems

Second-Order Channel Parameter Estimation Assisted Cancellation of Channel Variation-Induced Inter-Subcarrier Interference in OFDM Systems
Second-Order Channel Parameter Estimation Assisted Cancellation of Channel Variation-Induced Inter-Subcarrier Interference in OFDM Systems
OFDM transmission is known to be sensitive against carrier frequency offsets, as well as against the channel impulse response (CIR) variations incurred during an OFDM symbol period. Both of these phenomena lead to inter-subcarrier interference (ICI). Here we will concentrate on the latter phenomenon. ICI can be considered as an additional noise contribution, which linearly depends on the signal power and thus it potentially limits the achievable BER at relatively high SNRs. In this contribution we propose a second-order time-domain CIR tap variation estimator, which relies on both the received signal as well as on tentative symbol decisions. Our simulation results obtained in the context of a system employing decision-directed channel-prediction demonstrate that with the aid of the proposed algorithm, ICI cancellation can be performed even in high Doppler frequency channel scenarios. This is achieved without inserting additional time-domain pilot symbols.
1-5
Münster, M.
c7bbba92-827f-4a77-bdc2-fbed67caab36
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Münster, M.
c7bbba92-827f-4a77-bdc2-fbed67caab36
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Münster, M. and Hanzo, L. (2001) Second-Order Channel Parameter Estimation Assisted Cancellation of Channel Variation-Induced Inter-Subcarrier Interference in OFDM Systems. EUROCON, Slovakia. 04 - 07 Jul 2001. pp. 1-5 .

Record type: Conference or Workshop Item (Paper)

Abstract

OFDM transmission is known to be sensitive against carrier frequency offsets, as well as against the channel impulse response (CIR) variations incurred during an OFDM symbol period. Both of these phenomena lead to inter-subcarrier interference (ICI). Here we will concentrate on the latter phenomenon. ICI can be considered as an additional noise contribution, which linearly depends on the signal power and thus it potentially limits the achievable BER at relatively high SNRs. In this contribution we propose a second-order time-domain CIR tap variation estimator, which relies on both the received signal as well as on tentative symbol decisions. Our simulation results obtained in the context of a system employing decision-directed channel-prediction demonstrate that with the aid of the proposed algorithm, ICI cancellation can be performed even in high Doppler frequency channel scenarios. This is achieved without inserting additional time-domain pilot symbols.

Text
mm-lh-proceurocom-2001.pdf - Other
Download (586kB)

More information

Published date: July 2001
Additional Information: Event Dates: 4-7 July 2001 Organisation: EUROCON Address: Bratislava, Slovakia
Venue - Dates: EUROCON, Slovakia, 2001-07-04 - 2001-07-07
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 257063
URI: http://eprints.soton.ac.uk/id/eprint/257063
PURE UUID: 1802d2c5-12da-42c2-afe4-ff651543fedd
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 06 Jan 2004
Last modified: 03 Dec 2019 02:06

Export record

Contributors

Author: M. Münster
Author: L. Hanzo ORCID iD

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×