A Matrix Scheme to Extrapolation and Interpolation for a 4G MIMO OFDM System

A. Tahat
{"title":"A Matrix Scheme to Extrapolation and Interpolation for a 4G MIMO OFDM System","authors":"A. Tahat","doi":"10.1109/VETECF.2010.5594130","DOIUrl":null,"url":null,"abstract":"An estimation technique for Time-Invariant (TI) channels that utilizes an Extrapolation Matrix (EM) and specially designed pilot sequences is presented. We address the topic of pilot aided multi-user channel estimation for a proposed wireless system that uses OFDM in a synchronous SDMA environment, which can also be regarded as a Multiple-Input Multiple-Output (MIMO) environment. Unlike most multi-user channel estimation methods in the literature, the EM method does not assume that the number of utilized subcarriers is equal to the OFDM FFT size. Also, a matrix based channel interpolation method is described for Time-Varying (TV) channels: Windowed DFT Interpolation. Simulation results show that performance of our methods equal that of current technologies, but the computational complexity is significantly reduced.","PeriodicalId":417714,"journal":{"name":"2010 IEEE 72nd Vehicular Technology Conference - Fall","volume":"163 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2010-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2010 IEEE 72nd Vehicular Technology Conference - Fall","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/VETECF.2010.5594130","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3

Abstract

An estimation technique for Time-Invariant (TI) channels that utilizes an Extrapolation Matrix (EM) and specially designed pilot sequences is presented. We address the topic of pilot aided multi-user channel estimation for a proposed wireless system that uses OFDM in a synchronous SDMA environment, which can also be regarded as a Multiple-Input Multiple-Output (MIMO) environment. Unlike most multi-user channel estimation methods in the literature, the EM method does not assume that the number of utilized subcarriers is equal to the OFDM FFT size. Also, a matrix based channel interpolation method is described for Time-Varying (TV) channels: Windowed DFT Interpolation. Simulation results show that performance of our methods equal that of current technologies, but the computational complexity is significantly reduced.
4G MIMO OFDM系统外推插值的矩阵方案
提出了一种利用外推矩阵(EM)和特殊设计导频序列的时不变信道估计技术。我们讨论了在同步SDMA环境中使用OFDM的无线系统的导频辅助多用户信道估计的主题,该系统也可以被视为多输入多输出(MIMO)环境。与文献中大多数多用户信道估计方法不同,EM方法不假设所利用的子载波数量等于OFDM FFT大小。同时,描述了一种基于矩阵的时变(TV)信道插值方法:加窗DFT插值。仿真结果表明,该方法的性能与现有技术相当,但计算复杂度明显降低。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信