Relationship Between Capacity and Pathloss for Indoor MIMO Channels

2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2006-12-11 DOI:10.1109/PIMRC.2006.253925

J. Nielsen, J. Andersen, G. Bauch, M. Herdin

{"title":"Relationship Between Capacity and Pathloss for Indoor MIMO Channels","authors":"J. Nielsen, J. Andersen, G. Bauch, M. Herdin","doi":"10.1109/PIMRC.2006.253925","DOIUrl":null,"url":null,"abstract":"MIMO transmission systems exploit scattering in the radio channel to achieve high capacity for a given SNR. A high pathloss is generally expected for channels with rich scattering, suggesting that a high SNR and rich multipath are competing goals. The current work investigates this issue based on measurements obtained with a 16 times 32 MIMO channel sounder for the 5.8 GHz band. The measurements were carried out in various indoor scenarios where different sizes of both the transmitter and receiver antenna arrays are investigated, 1 times 1 up to 16 times 32. A moderate correlation between pathloss and median capacity was found. However, the higher richness can not compensate for the decrease in capacity due to increased pathloss. Assuming a fixed Tx power, the median capacity was found to depend approximately linearly on the pathloss. The slope of the linear relation depends on the effective rank of the channel, which in turn was found to be approximately linearly dependent on the number of antennas, assuming a symmetric MIMO channel","PeriodicalId":325797,"journal":{"name":"2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"6 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"15","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PIMRC.2006.253925","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 15

Abstract

MIMO transmission systems exploit scattering in the radio channel to achieve high capacity for a given SNR. A high pathloss is generally expected for channels with rich scattering, suggesting that a high SNR and rich multipath are competing goals. The current work investigates this issue based on measurements obtained with a 16 times 32 MIMO channel sounder for the 5.8 GHz band. The measurements were carried out in various indoor scenarios where different sizes of both the transmitter and receiver antenna arrays are investigated, 1 times 1 up to 16 times 32. A moderate correlation between pathloss and median capacity was found. However, the higher richness can not compensate for the decrease in capacity due to increased pathloss. Assuming a fixed Tx power, the median capacity was found to depend approximately linearly on the pathloss. The slope of the linear relation depends on the effective rank of the channel, which in turn was found to be approximately linearly dependent on the number of antennas, assuming a symmetric MIMO channel

查看原文本刊更多论文

室内MIMO信道容量与路径损耗的关系

MIMO传输系统利用无线电信道中的散射来实现给定信噪比下的高容量。对于具有丰富散射的信道，通常期望高路径损耗，这表明高信噪比和丰富的多径是相互竞争的目标。目前的工作是基于5.8 GHz频段的16倍32 MIMO通道测深仪获得的测量结果来研究这个问题。测量是在不同的室内场景中进行的，研究了不同尺寸的发射器和接收器天线阵列，从1乘以1到16乘以32。路径损失和中位容量之间存在适度的相关性。然而，丰富度的增加并不能弥补由于路径损失的增加而导致的容量的减少。假设固定的Tx功率，发现中位数容量近似线性地依赖于路径损耗。线性关系的斜率取决于信道的有效秩，而有效秩又近似线性地依赖于天线的数量，假设是对称的MIMO信道

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

2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications

自引率

0.00%

发文量