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- W2189356760 abstract "Inordertounderstand thekeymerits ofmultiuser diversity techniques inrelay-assisted cellular multihop networks, thispaper analyzes thespectral efficiency ofopportunistic (i.e., channel-aware) scheduling algorithms overa fading multiuser relaychannel withK usersintheasymptotic regime oflarge(butfinite) numberofusers. Usingtools fromextreme-value theory, we characterize thelimiting distribution ofspectral efficiency focusing onTypeIconvergence and utilize itininvestigating thelarge system behavior ofthemultiuser relay channel asafunction ofthenumberofusers andphysical channel signal- to-noise ratios (SNRs). Ouranalysis results inveryaccurate formulas inthelarge(butfinite) K regime, provides insights onthepotential performance enhancements frommultihop routing andspectrum reuse policies inthepresence ofmultiuser diversity gains fromopportunistic scheduling andhelps toidentify theregimes andconditions inwhich relay-assisted multiuser communication provides aclear advantage over direct multiuser communication. I.INTRODUCTION We consider theuplink anddownlink ofacellular multihop/mesh system (e.g., IEEE802.16j systems), withonebasestation, one fixed relay station andK users. Theroleoftherelay station is toenhance end-to-end linkquality intermsofcapacity, coverage andreliability (1), anditspresence allows thebasestation tochoose between (i)sending/receiving datadirectly to/from agiven user, (ii)" @default.
- W2189356760 created "2016-06-24" @default.
- W2189356760 creator A5006070162 @default.
- W2189356760 date "2007-01-01" @default.
- W2189356760 modified "2023-09-26" @default.
- W2189356760 title "Opportunism inMultiuser RelayChannels: Scheduling, Routing andSpectrum Reuse" @default.
- W2189356760 cites W2015794320 @default.
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