Show simple item record

dc.contributor.authorChelli, Ali
dc.contributor.authorPätzold, Matthias
dc.date.accessioned2015-08-04T07:03:35Z
dc.date.available2015-08-04T07:03:35Z
dc.date.issued2012-04
dc.identifier.isbn9781467304375
dc.identifier.issn15253511
dc.identifier.doi10.1109/WCNC.2012.6213930
dc.identifier.urihttp://hdl.handle.net/10754/564542
dc.description.abstractFor time-invariant frequency-selective channels, the transfer function is a superposition of waves having different propagation delays and path gains. In order to estimate the frequency correlation function (FCF) of such channels, the frequency averaging technique can be utilized. The obtained FCF can be expressed as a sum of auto-terms (ATs) and cross-terms (CTs). The ATs are caused by the autocorrelation of individual path components. The CTs are due to the cross-correlation of different path components. These CTs have no physical meaning and leads to an estimation error. We propose a new estimation method aiming to improve the estimation accuracy of the FCF of a band-limited transfer function. The basic idea behind the proposed method is to introduce a kernel function aiming to reduce the CT effect, while preserving the ATs. In this way, we can improve the estimation of the FCF. The performance of the proposed method and the frequency averaging technique is analyzed using a synthetically generated transfer function. We show that the proposed method is more accurate than the frequency averaging technique. The accurate estimation of the FCF is crucial for the system design. In fact, we can determine the coherence bandwidth from the FCF. The exact knowledge of the coherence bandwidth is beneficial in both the design as well as optimization of frequency interleaving and pilot arrangement schemes. © 2012 IEEE.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.titleAn improved method for estimating the frequency correlation function
dc.typeConference Paper
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.identifier.journal2012 IEEE Wireless Communications and Networking Conference (WCNC)
dc.conference.date1 April 2012 through 4 April 2012
dc.conference.name2012 IEEE Wireless Communications and Networking Conference, WCNC 2012
dc.conference.locationParis
dc.contributor.institutionFaculty of Engineering and Science, University of Agder, Service Box 509, N-4898 Grimstad, Norway
kaust.personChelli, Ali


This item appears in the following Collection(s)

Show simple item record