dc.contributor.author | Rytír, Martin | |
dc.contributor.author | Cheffena, Michael | |
dc.contributor.author | Grotthing, Per Arne | |
dc.contributor.author | Bråten, Lars Erling | |
dc.contributor.author | Tjelta, Terje | |
dc.date.accessioned | 2017-09-25T12:18:19Z | |
dc.date.available | 2017-09-25T12:18:19Z | |
dc.date.created | 2017-09-20T12:37:08Z | |
dc.date.issued | 2017 | |
dc.identifier.issn | 0018-926X | |
dc.identifier.uri | http://hdl.handle.net/11250/2456544 | |
dc.description.abstract | Analysis of two years of measurements from a three-site satellite beacon diversity experiment in Norway is presented. The operating frequency was 19.68 GHz, elevation angles were between 21.7° and 22°, and site separations 23, 29.7 and 50.1 km. Due to spatial decorrelation of rain, combined attenuation at these sites occurs much less frequently than at a single site. All three two-site combinations and a three-site combination were investigated.
Measured values for diversity gain at 0.01% exceedance level were 8.8, 10.7 and 12.1 dB for the two-site pairs and 12.5 dB for three-sites, given a single site attenuation level between 13 and 16 dB. Comparison of the measured data showed excellent agreement with current ITU-R models. Fade duration statistics for single-site and for the combinations are analyzed and it is shown that the statistics for the diversity combinations can be modelled using a double-lognormal function as is the case for single-site statistics.
Analysis of the effects of a non-ideal switch-over scheme showed that using moderate switch-over threshold levels and time delays, the number of switch-overs can be significantly reduced while most of the diversity gain and reduction in number of fades is retained. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Institute of Electrical and Electronics Engineers | nb_NO |
dc.title | Three-Site Diversity at Ka-Band Satellite Links in Norway: Gain, Fade Duration and the Impact of Switching Schemes | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | acceptedVersion | nb_NO |
dc.source.journal | IEEE Transactions on Antennas and Propagation | nb_NO |
dc.identifier.doi | 10.1109/TAP.2017.2751667 | |
dc.identifier.cristin | 1495818 | |
dc.description.localcode | (c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. | nb_NO |
cristin.unitcode | 194,0,0,0 | |
cristin.unitcode | 194,18,25,21 | |
cristin.unitname | Norges teknisk-naturvitenskapelige universitet | |
cristin.unitname | Seksjon for elektro og maskin | |
cristin.ispublished | true | |
cristin.fulltext | preprint | |
cristin.qualitycode | 1 | |