具有低数据速率CSI反馈的预编码MIMO-OFDM系统的跟踪方法

2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2005-09-11 DOI:10.1109/PIMRC.2005.1651435

Hua Zhang, Geoffrey Y. Li

{"title":"具有低数据速率CSI反馈的预编码MIMO-OFDM系统的跟踪方法","authors":"Hua Zhang, Geoffrey Y. Li","doi":"10.1109/PIMRC.2005.1651435","DOIUrl":null,"url":null,"abstract":"To obtain the closed-loop capacity of a multiple-input and multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system, channel state information (CSI) is required at the transmitter. Sometimes, CSI can be only obtained through frequent feedback from the receiver and it occupies a large bandwidth in the reverse link to completely feedback CSI. To reduce the data rate of CSI feedback, precoding matrix has been proposed for MIMO systems in flat fading channels and it is also extended to MIMO-OFDM systems in frequency-selective fading channels by interpolation. In this paper, we develop a novel precoding matrix tracking approach for MIMO-OFDM systems. The proposed approach is based on subspace tracking in the Grassman manifold and requires a limited data rate feedback. It not only is flexible to multiple data transmission but also has better performance than the existing approaches","PeriodicalId":248766,"journal":{"name":"2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"47 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2005-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":"{\"title\":\"A Tracking Approach for Precoded MIMO-OFDM Systems with Low Data Rate CSI Feedback\",\"authors\":\"Hua Zhang, Geoffrey Y. Li\",\"doi\":\"10.1109/PIMRC.2005.1651435\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"To obtain the closed-loop capacity of a multiple-input and multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system, channel state information (CSI) is required at the transmitter. Sometimes, CSI can be only obtained through frequent feedback from the receiver and it occupies a large bandwidth in the reverse link to completely feedback CSI. To reduce the data rate of CSI feedback, precoding matrix has been proposed for MIMO systems in flat fading channels and it is also extended to MIMO-OFDM systems in frequency-selective fading channels by interpolation. In this paper, we develop a novel precoding matrix tracking approach for MIMO-OFDM systems. The proposed approach is based on subspace tracking in the Grassman manifold and requires a limited data rate feedback. It not only is flexible to multiple data transmission but also has better performance than the existing approaches\",\"PeriodicalId\":248766,\"journal\":{\"name\":\"2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications\",\"volume\":\"47 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2005-09-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/PIMRC.2005.1651435\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PIMRC.2005.1651435","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 5

摘要

为了获得多输入多输出(MIMO)正交频分复用(OFDM)系统的闭环容量，需要在发射机处获取信道状态信息(CSI)。有时，只有通过接收方频繁的反馈才能获得CSI，要完全反馈CSI，在反向链路上占用了很大的带宽。为了降低CSI反馈的数据率，提出了用于平坦衰落信道的MIMO系统的预编码矩阵，并通过插值将其推广到频率选择衰落信道的MIMO- ofdm系统。本文提出了一种新的MIMO-OFDM系统预编码矩阵跟踪方法。该方法基于格拉斯曼流形中的子空间跟踪，需要有限的数据速率反馈。它不仅可以灵活地处理多数据传输，而且比现有的方法具有更好的性能

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

A Tracking Approach for Precoded MIMO-OFDM Systems with Low Data Rate CSI Feedback

To obtain the closed-loop capacity of a multiple-input and multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system, channel state information (CSI) is required at the transmitter. Sometimes, CSI can be only obtained through frequent feedback from the receiver and it occupies a large bandwidth in the reverse link to completely feedback CSI. To reduce the data rate of CSI feedback, precoding matrix has been proposed for MIMO systems in flat fading channels and it is also extended to MIMO-OFDM systems in frequency-selective fading channels by interpolation. In this paper, we develop a novel precoding matrix tracking approach for MIMO-OFDM systems. The proposed approach is based on subspace tracking in the Grassman manifold and requires a limited data rate feedback. It not only is flexible to multiple data transmission but also has better performance than the existing approaches

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications

自引率

0.00%

发文量