Lee, NamyoonMorales-Jiménez, DavidLozano Solsona, AngelHeath, R. W., Jr.2015-04-132015-04-132015Lee N, Morales-Jimenez D, Lozano A, Heath RW. Spectral efficiency of dynamic coordinated beamforming: a stochastic geometry approach. IEEE Transactions on Wireless Communications. 2015 jan 07; 14(1): 230-241. DOI 10.1109/TWC.2014.23373051536-1276http://hdl.handle.net/10230/23407This paper characterizes the performance/nof coordinated beamforming with dynamic clustering. A/ndownlink model based on stochastic geometry is put/nforth to analyze the performance of such base station/n(BS) coordination strategy. Analytical expressions for the/ncomplementary cumulative distribution function (CCDF)/nof the instantaneous signal-to-interference ratio (SIR) are/nderived in terms of relevant system parameters, chiefly the/nnumber of BSs constituing the coordination clusters, the/nnumber of antennas, and the pathloss exponent. Utilizing/nthis CCDF, with pilot overheads further incorporated into/nthe analysis, we formulate the optimization of the BS/ncoordination clusters for a given fading coherence. Our/nresults indicate that (i) coordinated beamforming is most/nbeneficial to users that are in the outer part of their cells/nyet in the inner part of their coordination cluster, and that/n(ii) the optimal cluster cardinality for the typical user is/nsmall and it scales with the fading coherence. Simulation/nresults verify the exactness of the SIR distributions derived/nfor stochastic geometries, which are further compared/nwith the corresponding distributions for deterministic grid/nnetworks.application/pdfeng© 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, 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 component of this work in other works./nThe final published article can be found at http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6851166info:eu-repo/semantics/articlehttp://dx.doi.org/10.1109/TWC.2014.2337305Coordinated beamformingDynamic clusteringStochastic geometryinfo:eu-repo/semantics/openAccess