Subspace based estimation of the signal to interference ratio for TDMA cellular systems
1998 (English)In: Wireless networks, ISSN 1022-0038, E-ISSN 1572-8196, Vol. 4, no 4, 241-247 p.Article in journal (Refereed) Published
The Signal-to-Interference Ratio (SIR) has been highlighted in the literature to be a most efficient criterion for several methods aiming at reducing the effects of cochannel interference, e.g., diversity reception, dynamic channel allocation and power control. In this paper we address the problem of how to obtain fast and accurate measurements of this parameter in a practical context. We develop a general SIR estimation technique for narrow-band cellular systems that is based on a signal subspace approach using the sample covariance matrix of the received signal. Simulation results using the frame structure in the GSM system show that the SIR can be estimated to within an error of 0.3 dB after only 200 ms, or within an error of 0.1 dB after only 0.6 seconds.
Place, publisher, year, edition, pages
ACM/Kluwer Academic Publishers , 1998. Vol. 4, no 4, 241-247 p.
Computer and Information Science
Research subject SRA - ICT
IdentifiersURN: urn:nbn:se:kth:diva-28141DOI: 10.1023/A:1019160207631OAI: oai:DiVA.org:kth-28141DiVA: diva2:384006
QC 201101142011-01-072011-01-072011-01-14Bibliographically approved