Preprocessing optimization algorithm based on partial channel information feedback in wideband OFDM systems

To mitigate inter-block interference(IBI) and inter-carrier interference(ICI) in an orthogonal frequency divi-sion multiplexing(OFDM) system,pre-processing approaches at transmitters based on full channel state information(CSI) had been proposed,the performance improved and receiver simplied.However...

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Main Authors: WANG Xia1, ZHANG Guo-mei1, XUE Tao2
Format: Article
Language:zho
Published: Editorial Department of Journal on Communications 2011-01-01
Series:Tongxin xuebao
Subjects:
Online Access:http://www.joconline.com.cn/zh/article/74418494/
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author WANG Xia1
ZHANG Guo-mei1
XUE Tao2
author_facet WANG Xia1
ZHANG Guo-mei1
XUE Tao2
author_sort WANG Xia1
collection DOAJ
description To mitigate inter-block interference(IBI) and inter-carrier interference(ICI) in an orthogonal frequency divi-sion multiplexing(OFDM) system,pre-processing approaches at transmitters based on full channel state information(CSI) had been proposed,the performance improved and receiver simplied.However,feeding full CSI back would oc-cupy scarce bandwidth and was impractical sometimes for the systems with high real-time demand.To deal with this problem,a preprocessing optimization based on partial CSI feedback was investigated and three selected preprocessing approaches of optimization matrix were developed and tested.Computer simulation results showed that the proposed op-timization algorithm can effectively cancel IBI and ICI and significantly improve the performance in wideband OFDM systems.Compared with the pre-processing approaches at transmitters based on full CSI,under the condition of meeting the demand for quality of services(QoS),the proposed scheme has high spectral efficiency and low feedback and com-putation complexity.
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institution Kabale University
issn 1000-436X
language zho
publishDate 2011-01-01
publisher Editorial Department of Journal on Communications
record_format Article
series Tongxin xuebao
spelling doaj-art-9e37dcd7d44f4a95b356fd111bfa150a2025-01-14T08:15:25ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2011-01-0132273374418494Preprocessing optimization algorithm based on partial channel information feedback in wideband OFDM systemsWANG Xia1ZHANG Guo-mei1XUE Tao2To mitigate inter-block interference(IBI) and inter-carrier interference(ICI) in an orthogonal frequency divi-sion multiplexing(OFDM) system,pre-processing approaches at transmitters based on full channel state information(CSI) had been proposed,the performance improved and receiver simplied.However,feeding full CSI back would oc-cupy scarce bandwidth and was impractical sometimes for the systems with high real-time demand.To deal with this problem,a preprocessing optimization based on partial CSI feedback was investigated and three selected preprocessing approaches of optimization matrix were developed and tested.Computer simulation results showed that the proposed op-timization algorithm can effectively cancel IBI and ICI and significantly improve the performance in wideband OFDM systems.Compared with the pre-processing approaches at transmitters based on full CSI,under the condition of meeting the demand for quality of services(QoS),the proposed scheme has high spectral efficiency and low feedback and com-putation complexity.http://www.joconline.com.cn/zh/article/74418494/preprocessingoptimizationOFDMpartial channel feedback
spellingShingle WANG Xia1
ZHANG Guo-mei1
XUE Tao2
Preprocessing optimization algorithm based on partial channel information feedback in wideband OFDM systems
Tongxin xuebao
preprocessing
optimization
OFDM
partial channel feedback
title Preprocessing optimization algorithm based on partial channel information feedback in wideband OFDM systems
title_full Preprocessing optimization algorithm based on partial channel information feedback in wideband OFDM systems
title_fullStr Preprocessing optimization algorithm based on partial channel information feedback in wideband OFDM systems
title_full_unstemmed Preprocessing optimization algorithm based on partial channel information feedback in wideband OFDM systems
title_short Preprocessing optimization algorithm based on partial channel information feedback in wideband OFDM systems
title_sort preprocessing optimization algorithm based on partial channel information feedback in wideband ofdm systems
topic preprocessing
optimization
OFDM
partial channel feedback
url http://www.joconline.com.cn/zh/article/74418494/
work_keys_str_mv AT wangxia1 preprocessingoptimizationalgorithmbasedonpartialchannelinformationfeedbackinwidebandofdmsystems
AT zhangguomei1 preprocessingoptimizationalgorithmbasedonpartialchannelinformationfeedbackinwidebandofdmsystems
AT xuetao2 preprocessingoptimizationalgorithmbasedonpartialchannelinformationfeedbackinwidebandofdmsystems