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dc.contributor.authorFu, I-Kangen_US
dc.contributor.authorSheen, Wern-Hoen_US
dc.date.accessioned2014-12-08T15:08:51Z-
dc.date.available2014-12-08T15:08:51Z-
dc.date.issued2007en_US
dc.identifier.isbn978-1-4244-0265-6en_US
dc.identifier.issn1550-2252en_US
dc.identifier.urihttp://hdl.handle.net/11536/6746-
dc.identifier.urihttp://dx.doi.org/10.1109/VETECS.2007.562en_US
dc.description.abstractAn analysis on downlink capacity of multi-cell OFDMA (orthogonal frequency division multiple access) systems is presented in this paper under a model of randomized multiple access interference, which is a result of applying random sub-carrier allocation among different cells/sectors. The analysis shows that the system capacity is either in the bandwidth-limited or power-limited region and that optimum tradeoff between capacity and coverage is achievable in a sense that given a required capacity the maximum coverage can be determined. The capacity is evaluated for different system setups, which are characterized by cell radius, reuse factor and types of antenna system with and without spatial division multiple access (SDMA). Three types of antenna are considered including omni-directional antenna, 3-sector antenna and switched-beam smart antenna. Numerical results show that the use of 3-sector and switched-beam smart antenna can enlarge the bandwidth-limited region and achieves a better capacity and coverage tradeoff.en_US
dc.language.isoen_USen_US
dc.subjectOFDMAen_US
dc.subjectcapacityen_US
dc.subjectinterference randomizationen_US
dc.titleAn analysis on downlink capacity of multi-cell OFDMA systems under randomized inter-cell/sector interferenceen_US
dc.typeArticleen_US
dc.identifier.doi10.1109/VETECS.2007.562en_US
dc.identifier.journal2007 IEEE 65TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-6en_US
dc.citation.spage2736en_US
dc.citation.epage2740en_US
dc.contributor.department電信工程研究所zh_TW
dc.contributor.departmentInstitute of Communications Engineeringen_US
dc.identifier.wosnumberWOS:000252237601234-
Appears in Collections:Conferences Paper


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