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dc.contributor.authorSengül, E.en_US
dc.contributor.authorKöymen, H.en_US
dc.contributor.authorİder, Y. Z.en_US
dc.date.accessioned2015-07-28T11:57:36Z
dc.date.available2015-07-28T11:57:36Z
dc.date.issued2005en_US
dc.identifier.issn0018-9316
dc.identifier.urihttp://hdl.handle.net/11693/11410
dc.description.abstractDifferent trunked Private Mobile Radio (PMR) systems have been designed over the last several decades, all of which have symmetric downlink and uplink channel capacities. Due to this symmetry, these systems may not be spectrally efficient in case of different types of services, which are specific to PMR systems, such as group and broadcast calls. In this study, a new asymmetric trunked PMR system comprising a broadband, wide-area downlink and a narrowband cellular uplink, is proposed to achieve a higher spectral efficiency than current digital trunked PMR systems. This system is spectrally more efficient because in group and broadcast calls only a single downlink channel has to be allocated in the downlink part. However, as the number of clusters in the system increases, this advantage relative to PMR systems is lost, since the latter can employ frequency reuse. Spectral efficiency of the proposed asymmetric system (a-PMR) system and a standard TETRA system are compared using numerical case studies against different traffic loads and number of clusters. The optimum point, with respect to number of clusters, up to which the proposed a-PMR system is more efficient, is determined. It is shown that a very large PMR user population can be efficiently served using the proposed a-PMR system. The issues related to implementing such a system are discussed.en_US
dc.language.isoEnglishen_US
dc.source.titleIEEE Transactions on Broadcastingen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/TBC.2005.852798en_US
dc.subjectDigital audio broadcastingen_US
dc.subjectLand mobile radio cellular systemsen_US
dc.subjectPrivate mobile radioen_US
dc.subjectSpectrum efficiencyen_US
dc.subjectTerrestrial trunked radioen_US
dc.titleA Spectrally efficient PMR system utilizing broadcast serviceen_US
dc.typeArticleen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentInstitute of Materials Science and Nanotechnology UNAMen_US
dc.citation.spage493en_US
dc.citation.epage503en_US
dc.citation.volumeNumber51en_US
dc.citation.issueNumber4en_US
dc.identifier.doi10.1109/TBC.2005.852798en_US
dc.publisherInstitute of Electrical and Electronics Engineersen_US


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