室内移动通信系统的优化 文献综述

文献综述题目学生姓名专业班级电学号院（系）指导教师完成时间2010年06月05日A1A0A2A3A4A5A6A7A8A9A101室内移动通信系统的优化摘要随着移动通信的发展，用户在大型建筑物（尤其是酒店、商务和商务中心）内使用移动电话所产生的话务量日益增加。此时，用户已不满足只有室外覆盖良好的移动通信服务，同时也要求网络运营能提供室内覆盖很好的移动通信服务。但此类场所由于其建筑体本身的原因，往往是网络覆盖的盲区或信号特别差。因此，解决好室内覆盖，对满足用户的需求，提高网络的通信质量，以变得越来越重要。关键词内信号通信系统1室内通信信号分布系统的组成室内通信信号分布系统主要由信号源和信号分布系统两部分成。信号源的产生主要是通过直放站、增加微蜂窝基站和增加微蜂窝基站加直放站3种方式产生的，如图1所示。直放站做信号源时，信号源的提去主要通过直放站的施主G3837G13459直G6521G1186G19480G17829基站提G2474信号G727用G13818G2524G3132G1186G19480G17829基站G13818G2524部分信号通过G1821G13432G1268G17877G2052盲区内的直放站。用G13818G2524G3132G1186G19480G17829基站G13818G2524部分信号通过电G13530G1268G17877G2052盲区内的直放站。A121A11A13A14A15A16A17A18A12信号分布的基本方式主要是G7092源G3837G20316分布方式、有源分布方式、G1821G13432分布方式和G8856G9443电G13530分布方式。G7092源G3837G20316分布方式通过G7092源G3132G1226和G3837G13459、G20316G13459，G4570信号G1268G17877和分G18209G2052室内所需G10627G3671，以得G2052良好的信号覆盖。有源分布方式通过有源G3132G1226和G3837G20316G13459G17839G15904信号放大和分G18209。G1821G13432分布方式主要G2045用G1821G13432来G17839G15904信号分布。G17878G2524于大型和分G6967型室内G10627G3671的主G17347信号的G1268G17767。G8856G9443电G13530分布方式信号源通过G8856G9443电G13530G1268G17767信号，G5194通过电G13530外G4560体的G980系G2027G5332G2487，在外G4560体G990产生G15932G19766电G8981，A11A13A19A20A21A22A16A17A23A24A252G1186G13792在电G13530G5332G2487G3800G8190G6142G19766G990G5430成电G11925场，G17837G1135G5332G2487G4613G11468G5415于G980系G2027的G3837G13459G17227G2052信号的发G4568和G6521G6922G1328用。G4439G17878用于G19579G17959、G3332G19093、G19283G5278G12573G3332G5430。G5647的来G16840，信号分布系统G7693G6466覆盖区G3507的G1867体G5785G1929，G13464G2524G7092源、有源、G1821G13432、G8856G9443G12573方式，G17839G15904G13520G2524G5627的分G7524。在G4466G19481使用中，室内分布系统G2499使G8611G1022微蜂窝覆盖G14551G3272增G14279G1972G2325G4630G8016G5050G2503G727如G7536加G16025G5190G13459放大G3132，覆盖G14551G3272G17836G2499大G5145G5242增加。G980G1022G4448G3803的室内分布系统G5224能G3827通过G980G4570G17837场所的G8611G980G3800的基站G990G15904信号G6922G19610G2052G2530，G3355G2260G3332G17877G17810特G4462的G6521G2487A262室内通信信号分布系统的设计G7512成室内通信信号分布系统的主要G16786G3803是G726G20316G13459、G3837G13459、G5190G13459放大G3132、G5322G19283放大G3132以G2462G13818G2524、G2163分G12573G7092源G3132G1226。在系统G16786G16757G990主要G13783G15397的是能量分G18209的G19394G20076。室内覆盖系统的G16786G16757，G2265G6336微蜂窝系统、G1268G17767系统、室内分布系统、电源系统G18614部分内G4493。G16786G16757G13783G15397的主要因G13044G726信号源、场G5390分布、G990G15904信G3134G8616、互调G5190扰、G990下G15904平衡、G1268G17767和分G18209损耗、施工难G5242、造价。场G5390分布的G980般G16786G16757标准如G159321所示。A27A28A29A30A27A28A29A30A31A32A3385DBMA38A39A3399A40A41A4212DBA43A44A45A46A33515DBMA47A48A49A50A51A5295A59A60A61A62A63A64120DBMA65A66A67A68A69A70A71A72场G5390分布室内空间G1268G17767损耗模型G726LPL10NLGD（米）FAF式中，PL为距G3837G134591米G3800的G17347径衰渐典型值为30DB。N为同G4630衰减指数G726办公G8016中，N325G727G980般建筑中，N276G727商场中，N218。FAF为G17347径损耗G19480加值G726玻璃的FAF为8DBG727隔墙的FAF为1015DBG727预制板的FAF为2030DB。在G990G15904信G3134G8616的G16786G16757中，如G7536基站的白G3134声为120DBM，为了保证G6521G6922机的灵敏G5242，需要G16786置G990G15904增益，使G990G15904链G17347的G5647G17767入G3134声小于120DBM。如基站G17767出P43DBM，G17767入G2052直放站为40DBM，即有效G17347径损耗为83DB，那么直放站的G990G15904增益G16786置G980G4462要小于83DBG727如只有直放站是有源G3132G1226，G3134声系数为5DB，增益G5224G16786为小于78DB。如增益G16786为80DB，直放站G5647的G3134声115DBM（白G3134声G3134声系数），在G17767出G2487变为35DBM，经过83DB的有效G17347径损耗G17767入G2052基站为118DBM，大于源G3134声120DBM，使基站G6521G6922机灵敏G5242A11A13A19A20A21A22A16A17A23A24A253降低2DB。通过理论分G7524，G4448成室内覆盖系统的G16786G16757，如图2所示。A122A11A13A14A15A16A17A73A74A12G980G1022好的室内覆盖系统G5224该以最少的G16786G3803满足G16786G16757要求G727不会因增加室内覆盖系统G13792影响整G1022网络的G5627能G727G5224该兼G4493所有移动通信体制G727使用寿命G19283，G1867有远程监控能力，管理维护方便。32G/3G共网下的室内通信信号分布系统优化在G7092G13459网络优化领G3507，2G和3GG1861网下的3G室内覆盖改造对于室内分布系统有着重大的意义,首先,2G和3G通过高效的G2524G17347,在满足室内2G和3G覆盖的前提下，G1861用大量的G3837G20316G3132G1226G2499以避免重复建G16786,节约大量的成本G727其次，3G室内覆盖的改造算法G2499以优化G7092G13459信号的覆盖和G3837G13459G2487信号的质量G727最G2530，通过优化的3G改造算法G2499以节约大量的3G信源。已有2G覆盖的室内分布系统，按照原有的2G覆盖G16786G16757，系统的覆盖和频率往往不能满足3G制式的需要（2G和3GG1861网的元G3132G1226工G1328频段需涵盖800MHZ2500MHZ），故需要改造原有2G室内分布系统。笔者建议，基于2G室内分布系统通过增加BBURRU的方式升级改造3G的室内分布系统，以“高密G5242，低G2163率”的G3837G13459G2487布放原则，以系统造价最低和G3837G13459覆盖G3355衡为目标，通过改造G16786G16757G45703G的信号G2524G17347G20522G室内分布系统中去。42G和3G共网覆盖的现状第G9802G先建G16786，在原有2GG16786G16757的基础G990改造该系统的特点是增加G3837G13459G2487数A11A13A19A20A21A22A16A17A23A24A254量，重新布放G3837G13459位置保证覆盖，更换G3132G1226保证2G和3G制式兼G4493，即保证G3132G1226工G1328频段需涵盖800MHZ2500MHZ。对已有的2G拓扑，需要G17839G15904拓扑改造，保证3G的G3837G13459G2487G2163率要求，G29042G的拓扑，G9994G2530在2G拓扑G17839G159043GG2524G17347。G1863于G2524G17347点的G11842G4462、信源的G11842G4462，以G2462G2524G17347G2530如G1321G4445放3G信源G4570是系统G16786G16757的G1863G19202。第G11202G和3GG1861同新建该系统的特点是不G2475约G7475，在G16786G16757时G2499以按照3G的原则来G16786G16757，即G3837G13459G2487的低G2163率、高密G5242原则，G980般来G16840如G7536能保证3G的G3837G13459G2487G2163率覆盖G4613能保证2G系统的覆盖。因此，为了便于G1523G185043G改造的算法，2G和3GG1861同新建G2499以先按照3G原则G4462下G3837G13459G2487的需求，G45702G的G3837G20316拓扑生成，G1889在2G拓扑G990G17839G15904G2524G17347点的G11842G4462和信源RRU的布放来满足3G的系统。5结束语目前，G1186移动通信运营商的G6124G11065G11536G1821来G11487，室内通信信号分布系统对于运营商提高服务G8712平、增G5390G12466G1117G4466力、G7653G12447G1237G1006G5430G16949，G1867有不G2499低G1284的G1328用。随着移动通信网络优化工G1328的G9157入展G5332，室内移动通信信号分布系统已经成为G980种重要的优化G6175段运用于网络优化工G1328中。A11A13A19A20A21A22A16A17A23A24A255G3参考文献G3A75A76A77WILLIANCYLEEA78A79A54A51A80A81A82A83A84A85A86A75A87A77A88A89A90A91A92A93A94A95A96A97A98A99A100A101A63A50A102A103A104A105A106A106A105A75A105A77A107A108A109A88A110A111A112A113A114A115A116A117A118A119A120A121A122A123A124A125A126A127A128A129A130A131A132A133A134A135A136A137A116A138A139A140A141A142A142A143A123A144A125A131A132A134A145A146A147A126A110A111A134A145A112A113A148A149A123A150A125A126A151A152A153A154A155A156A157A158A159A160A161A123A162A125A163A164A165A166A167A168A150A169A170A171A172A112A113A148A149A123A150A125A166A151A152A130A173A174A175A176A158A159A160A140A141A142A142A177A123A178A125A179A180A126A114A115A181A182A118A119A183A184A185A186A187A110A111A134A145A112A113A148A149A131A120A188A189A123A190A125A126A191A192A130A191A192A110A111A134A145A193A194A195A196A138A139A140A141A142A142A162A123A143A125A197A198A126A199A142A142A150A114A115A116A117A118A119A126A123A190A125A200A201A134A145A202A203A204A141A142A142A177A205A141A206A123A207A125CONCHIILA161WA208A204A209A210A211A204A212A213A214A215A216A126A217A218A219A220A221A134A145A118A119A222A223A224A159A225A157A226A175A176A158A159A160A123A227A125A228A229A230A140A231A232A233A140A234A235A236A166A237A238A110A111A134A145A123A150A125A166A151A152A130A154A155A156A157A158A159A160A140A141A142A142A207A123A199A125A239A240A241A140A198A242A243A166A217A218A110A111A134A145A118A119A123A150A125A166A151A152A130A154A155A156A157A158A159A160A140A177A199A199A143A123A177A142A125A244A245DAMPSA187A131A132A246A193A173A147A247A248A123A190A125A134A145A249A250A177A199A199A227A126A177A141A123A177A177A125A197A251A252A126A253A254A237A238A110A111A134A145A118A119A123A150A125A126A151A152A153A255A146A158A159A160A140A177A199A199A199A123A177A141A125A184A0A1A126A114A115A181A182A184A185A186A122A23A116A2A123A190A125A126A189A3A130A191A128A192A222A189A3A225A145A27A202A203A193A194A138A139A140A141A142A142A178A123A177A144A125A194A132A4A126A110A111A112A113A120A114A115A181A182A123A190A125A126A110A111A134A145A126A141A142A142A177A126A162A123A177A162A125A196A5A5A126A114A115A110A111A134A145A6A187A120A7A8A171A172A9A10A11A12A123A190A125A126A134A30A249A250A161A177A199A199A143A126A143A123A177A178A125A206A13A14A204A209A15A16A212A124A213A168A109A124A150A17A215A18A112A113A19A20A122A23A219A148A149A123A150A125A166A151A152A130A154A155A156A157A158A159A160A140A141A142A142A207A123A177A143A125A218A21A22A166A167A168A150A110A111A134A145A112A113A148A149A123A150A125A166A151A152A130A154A155A156A157A158A159A160A140A141A142A142A144A123A177A207A125A221A24A25A126A212A124A213A168A109A124A150A17A114A115A181A182A11A12A122A23A26A28A123A190A125A126A110A111A134A145A126A141A142A142A199A126A142A141A123A177A227A125A239A167A29A204A196A31A32A126A228A33A114A115A181A182A118A119A120A34A35A123A190A125A126A215A18A157A202A203A219A145A27A126A141A142A142A207A232A177A142A233A123A177A199A125A234A36A126A114A115A116A117A118A11