Polarisation dependent MIMO gains on multiuser downlink OFDMA with a 3GPP LTE air interface in typical urban outdoor scenarios

2008 International ITG Workshop on Smart Antennas Pub Date : 2008-03-21 DOI:10.1109/WSA.2008.4475552

T. Wirth, V. Jungnickel, A. Forck, S. Wahls, V. Venkatkumar, T. Haustein, H. Wu

{"title":"Polarisation dependent MIMO gains on multiuser downlink OFDMA with a 3GPP LTE air interface in typical urban outdoor scenarios","authors":"T. Wirth, V. Jungnickel, A. Forck, S. Wahls, V. Venkatkumar, T. Haustein, H. Wu","doi":"10.1109/WSA.2008.4475552","DOIUrl":null,"url":null,"abstract":"Recent studies on spatial multiplexing gain based on antenna polarisation diversity are mostly based on channel measurements or theoretical propagation models. The advantage of using XPD cross-polarised antennas in cellular MIMO-OFDM systems is that XPD antennas save costs and space achieved by a more compact antenna design. The throughput performance is generally considered to be similar to co-polarised antennas with pre-coding. In this paper we show the achievable gains of using cross-polarised antennas as compared to co-polarised antennas at the base station. These cross-polarised antennas are used for adaptive MIMO transmission for typical outdoor scenarios. Our results are based on real-time multiuser (MU) multi-antenna capacity measurements taken with a MIMO-OFDMA system with parameters close to the current 3G-Long-Term-Evolution (LTE) standard. Downlink transmission is considered in a single-cell outdoor scenario. We demonstrate the significant effect of polarisation on the overall system performance, especially on user sum rates when fairness scheduling in OFDMA is applied.","PeriodicalId":255495,"journal":{"name":"2008 International ITG Workshop on Smart Antennas","volume":"59 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2008-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"7","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2008 International ITG Workshop on Smart Antennas","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/WSA.2008.4475552","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 7

Abstract

Recent studies on spatial multiplexing gain based on antenna polarisation diversity are mostly based on channel measurements or theoretical propagation models. The advantage of using XPD cross-polarised antennas in cellular MIMO-OFDM systems is that XPD antennas save costs and space achieved by a more compact antenna design. The throughput performance is generally considered to be similar to co-polarised antennas with pre-coding. In this paper we show the achievable gains of using cross-polarised antennas as compared to co-polarised antennas at the base station. These cross-polarised antennas are used for adaptive MIMO transmission for typical outdoor scenarios. Our results are based on real-time multiuser (MU) multi-antenna capacity measurements taken with a MIMO-OFDMA system with parameters close to the current 3G-Long-Term-Evolution (LTE) standard. Downlink transmission is considered in a single-cell outdoor scenario. We demonstrate the significant effect of polarisation on the overall system performance, especially on user sum rates when fairness scheduling in OFDMA is applied.

查看原文本刊更多论文

在典型的城市室外场景中，使用3GPP LTE空中接口的多用户下行链路OFDMA的极化依赖MIMO增益

目前基于天线极化分集的空间复用增益研究大多基于信道测量或理论传播模型。在蜂窝MIMO-OFDM系统中使用XPD交叉极化天线的优点是XPD天线通过更紧凑的天线设计节省了成本和空间。一般认为其吞吐量性能类似于预编码的共极化天线。在本文中，我们展示了在基站中使用交叉极化天线与共极化天线相比可实现的增益。这些交叉极化天线用于典型室外场景的自适应MIMO传输。我们的结果基于实时多用户(MU)多天线容量测量，采用MIMO-OFDMA系统，参数接近当前的3g长期演进(LTE)标准。下行链路传输是在单蜂窝室外场景中考虑的。我们证明了极化对系统整体性能的显著影响，特别是在OFDMA中应用公平调度时对用户和速率的影响。

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

2008 International ITG Workshop on Smart Antennas

自引率

0.00%

发文量