Change search
ReferencesLink to record
Permanent link

Direct link
On the Impact of Antenna Correlation on the Pilot-Data Balance in Multiple Antenna Systems
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems. KTH, School of Electrical Engineering (EES), Automatic Control.ORCID iD: 0000-0002-2289-3159
KTH, School of Electrical Engineering (EES), Automatic Control.
2014 (English)Report (Other academic)
Abstract [en]

We consider the uplink of a single cell single input multiple output (SIMO) system, in which the mobile stations use intra-cell orthogonal pilots to facilitate uplink channel estimation. In such systems, the problem of pilot-data transmission power balancing is known to have a large impact on the performance on the achievable uplink data rates. In this paper we derive a closed form expression for the mean square error (MSE) as a function of the pilot and data power levels under a per-user sum pilot-data power constraint. Our major contribution is the derivation of the MSE formula for Gaussian channels under arbitrary channel covariance matrices. For example, our model readily allows to study the MSE as a function of the number of antennas and antenna correlation structures, including the popular spatial channel model (SCM). Numerical results suggest that the impact of antenna spacing on the MSE is limited, but the angle of arrival (AoA) and angular spread have a more articulated impact on the MSE performance. We also find that as the number of antennas at the base station grows large, a higher percentage of the power budget should be allocated to pilot signals than with a low number of antennas.


Place, publisher, year, edition, pages
2014. , 8 p.
National Category
Communication Systems
URN: urn:nbn:se:kth:diva-143530OAI: diva2:706971
Swedish Foundation for Strategic Research , Matthew

QC 20140331

Available from: 2014-03-24 Created: 2014-03-24 Last updated: 2014-03-31Bibliographically approved

Open Access in DiVA

fulltext(1813 kB)134 downloads
File information
File name FULLTEXT01.pdfFile size 1813 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Fodor, GaborDi Marco, Piergiuseppe
By organisation
Industrial Information and Control SystemsAutomatic Control
Communication Systems

Search outside of DiVA

GoogleGoogle Scholar
Total: 134 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 160 hits
ReferencesLink to record
Permanent link

Direct link