固定中繼在無線小區(qū)中的性能分析與仿真.pdf

1、浙江大學(xué)碩士學(xué)位論文固定中繼在無線小區(qū)中的性能分析與仿真姓名：李吉慶申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：通信與信息系統(tǒng)指導(dǎo)教師：趙問道20050124浙江人學(xué)碩士學(xué)位論文AbstractAsrapidlydevelopingnowadaysoursocietydependsdeeplyoninformationtechnology.Thuswirelesscommunicationtechnologyachievedagreatimprovemen

2、tonaspectssuchascommunicationqualitydatarateandchannelcapacity.Howevertheresastrongdesireforlargeamountofdatatransmitingrecently.Currentwirelesscommunicationservicesaregettingmoreandmoredificulttosatisfythecommunicationd

3、emands.Anywaytraditionalcommunicationtechnologyishardlyimprovedsincethelimitsofbandwidthsignalattenuationwhilepropagationinterferencesandnoises.Todealwithalltheselimitationseveralnoveltechnologiesareproposedlastdecadeamo

4、ngwhichMultiHoptechnologyattractsmoreandmoreattentionsforitsanewtechnologythatisabletoincreasethequalityofcommunication.MultiHopcompletesawholecommunicationviathesignalrelayingusingsomenodesinthewirelesscells.Itisanongoi

5、ngresearchandiscarriedoutinphases.Phase1concernspeertopeerrelaying.Inthisphasetheuserequipmentscannotonlyreceivesignalsbutalsorelaythesignalsforotherequipments.Phase2isaboutthefixedrelaysfixedrelaysarelocatedincertainpos

6、itionsofthecellsforthepurposeofrelayingsignals.Thisthesisintroducestheinfrastructureofatypeofwirelesscellsystemwithfixedrelayspresentingitsrelayingchannelpartitionschemeandseveralrelayselectionalgorithmsaswell.Alsotheper

7、formancesoftherelayselectionalgorithmsarequalitativelyanalyzedandfurthermoreanapproachtosimplifythealgorithmsisproposed.Thensimulationresultsaregivenoutwhichareusedtoprovethatdiferentrelayselectionalgorithmsbringdiferent

8、performancesandillustratetheenhancementwhichtherelayselectionalgorithmsintroducedinthesystemareapparentlycomparingtothenorelaycells.Meanwhilethroughcomparingtheresultsofsimplifiedalgorithmsandthecorrespondingoriginalalgo

9、rithmsthisthesisprovesthefactthatthesimplifiedalgorithmsaremoreeasilytorealizewithlesssignalingoverheadsyetonlyalitlebitinefficientthantheoriginalalgorithms.Attheendofthisthesiswedrawtheconclusionsandsuggestseveralfuture