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1、AFrameworkforDistributedSpatio-TemporalCommunicationsinMobileAdhocNetworksGentianJakllari+,SrikanthV.Krishnamurthy+,MichalisFaloutsos+PrashantV.Krishnamurthy†andOzgurErcetin∗+†∗UniversityofCalifornia,Riverside,UniversityofPittsburgh,SabanciUniversity,Turkey{jak
2、llari,krish,michalis}@cs.ucr.edu,prashant@tele.pitt.edu,oercetin@sabanciuniv.eduAbstract—Space-timecommunicationscanhelpcombatfadingformanantennaarray.Withthismethod,onecouldcreatevir-andhencecansignificantlyincreasethecapacityofadhocnet-tualMISO,SIMOorMIMOlinks
3、.Theuseofvirtualantennaworks.Cooperativediversityorvirtualantennaarraysfacilitatearrayscanyieldthespatialdiversitybenefitspossiblewithatra-spatio-temporalcommunicationswithoutactuallyrequiringthede-ditionalantennaarrayhousedonasinglenode.Whilephysicalploymentofp
4、hysicalantennaarrays.VirtualMISOentailsthesi-multaneoustransmissionofappropriatelyencodedinformationbylayerresearchontheuseofvirtualantennaarrayshasbeenfairlymultiplenodestoeffectivelyemulateatransmissiononanantennaextensive[36],[34],[35],[17],[30],therearenoma
5、turehigherarray.Wepresentanovelmulti-layerapproachforexploitingvir-layerprotocols,whichcantranslatetheadvantagesofusingvir-tualMISOlinksinadhocnetworks.Theapproachspansthephys-tualantennaarraystoenhancenetworkandapplicationperfor-ical,mediumaccesscontrolandrout
6、inglayersandprovides:(a)mance.asignificantimprovementintheend-to-endperformanceintermsofthroughputanddelayand,(b)robustnesstomobilityandinter-Ouroverarchingobjectiveinthispaperistotranslatethead-ferenceinducedlinkfailures.Thekeyphysicallayerpropertythatvantageso
7、fusingvirtualMISOatthephysicallayerintohigherweexploitisanincreasedtransmissionrangeduetoachievedthelayerperformancebenefits.Inthiswork,wedefineavirtualdiversitygain.Exceptforspace-timesignalprocessingcapabilities,MISOlinktobeestablishedwhenagroupofnodes(transmit
8、-ourdesigndoesnotrequireanyadditionalhardware.Weperformextensivesimulationstoquantifythebenefitsofourapproachus-ters)jointlyenablespace-timecommunicationswithasinglere-ingvir
