鞍山市建设银行的联通3G室分建设及实施-毕业论文外文翻译

1、外文文献TD indoor distribution system designTD-SCDMA ， indoor distribution system rehabilitation programsWith the high-speed advancementof information technology, individual users of hand-held communication devices increasing number of demand for communication services is also rising, followed by the wi

2、reless coverage requirements are also increasing. According to statistics, used in mobile phones, the number of indoor users greater than the number of outdoor users than 2 times, the users tend to use the mobile phone in the indoor. However 3G band higher signal penetration is weak, it is difficult

3、 to realize the depth of indoor coverage.TD-SCDMA network-based data services, while most of the data traffic occurred in the room, so early in the TD-SCDMA network construction, the introduction of TD-SCDMA indoor hot spots in some indoor distribution system is very necessary. Implementation of ind

4、oor coverage projects, buildings traffic can generally be increased 1.4 times, and at the same time reduce the outdoor network load and expansion pressure, reducing the outdoor networks overall interference and improve the quality of network services.1 .TD-SCDMA indoor distribution system characteri

5、sticsTD-SCDMA indoor distribution system compared to other indoor distribution system of the communication system has the following characteristics:（1）TD-SCDMA indoor distribution system using smart antenna system coverage, capacity and quality are affected. No shaping gain downlink traffic channel,

6、 business channel downlink power 6dB 8dB lower compared with outdoor coverage. Due to the lack of smart antenna uplink interference is not well controlled.( 2) the coverage of the common channel and the traffic channel be considered separately. Since forming gain smart antenna indoor business channe

7、l, so it is a business channel coverage limited system. TD-SCDMA pilot power can be flexibly set according to the requirements of, not a fixed value.business coverage is basically the same. Respiratory effects of the TD-SCDMA system is not obvious, the business of various rate basically covered the

8、same diameter.support asymmetric data services, according to the traffic up and down to adjust the time slot configuration.working band, big loss, poor signal indoor propagation, deep cover difficult.To reduce indoor, outdoor interference, indoor, outdoor is more suitable forusing different frequenc

9、y Zuwangfangshi.In the indoor distribution area to the outdoor coverage area movement, can not use relay switching, can select only the hard handover.for control system equipment delay. The maximum radius of the TD-SCDMA base stations covering 11.25km, which requires indoor distribution system relay

10、 device is not large transmission delay, to ensure that the interference between downlink.using the uplink synchronous technology, improve the technical requirements of the repeater and dry amp.The majority of sources need to introduce a separate GPS antenna, and select a suitable location for insta

11、llation.TD-SCDMA indoor distribution system constructionprinciplesTD-SCDMA indoor distribution system construction should consider the needs of the coverage, capacity, quality unified. Constrained by the proximity effect, consider a single antenna coverage should be balanced design. And other commun

12、ication systems between interference and multi-system power sharing 2G indoor distribution system, you need to pay attention to the match. According to the TD-SCDMA technology features, this paper presents the following TD-SCDMA indoor distribution system construction principles.meet the target area

13、 of coverage, capacity, quality demand;to build a comprehensive distribution system, using broadband passive devices;To conserve resources, try to share the existing indoor antenna distribution system;to minimize the impact on existing 2G systems;reasonable power configuration to minimize the use of

14、 the TD-SCDMA dry release;to minimize passive components, reduce device insertion loss;considering the construction and operation and maintenance costs;take full account of the system compatible, upgrade, expansion capability. According to the above principles，the source selection need to consider t

15、hefollowing factors: coverage，capacity and quality requirements of the building, and give due consideration to the long-term business development needs of buildings; whether the source installation location，whether to meet to take power conditions Third，network conditions，and signal transmission in

16、place around.Coverage, such as switching and interference factors to consider in the design of the distribution system. Which coverage should take into account the distribution of signal power，signal link loss，terminal receiver sensitivity and power margin factor; switch including outdoor indoor swi

17、tch ，indoor switch, switch elevators inside and outside，and should also consider switching area, switch，handover success rate factors; interference should take into account the interaction of the original system and the 3G system before and after the opening of the 3G system.To reduce the impact of

18、indoor distribution system for outdoor systems need to meet the following conditions: In addition to the provisions of the edge of the indoor signal level ， indoor coverage system is not over covers outdoor and indoor distribution system in a building 10 meters away from built indoor signal should b

19、e higher than 9dB above outdoor strongest signal level is low ，or indoor signal from leaking to the outside at 10 meters of the pilot signal strength is not higher than-95dBm.distribution system shared analysisWhen multiple systems share a common distribution system， power matching is the biggest pr

20、oblem. Power matching the need to consider the difference of the signal source output power，different band signals in the difference of the transmission loss in the distribution system， the edge coverage field strength of the different requirements of the different frequency bands in the signal spac

21、e propagation loss differences and other factors.In the same distribution system to a plurality of system signal source coupled directly huge the remaining allowable loss difference obtained by the different systems. In all systems, CDMA800 ， GSM, and DCS1800 coverage effect is best， WCDMA and TD-SC

22、DMA effect，followed by the worst effects of the PHS and WLAN coverage. In the distribution system，the system branch loss of about 5dB，an insignificant difference， so share the branch of the distribution system is not difficult. The same time，the system of trunk loss of 2dB，seems more suitable shared

23、. Various systems，however，due to the need for capacity and power to match，in the dry roads to do a different approach，TD-SCDMA multi-system shared distribution system，the trunk is difficult to share ， except small-scale distributed systems.distribution system reform programIndoor distribution system

24、 to solve the primary problem，which is a good wireless signal coverage for indoor users. Usually in accordance with the size and type of buildings，indoor distribution application scenarios are divided into: the miniature building area (6000m2)，a small building (6000m2 12000m2 area)，medium-sized buil

25、dings (12000m2 60000m2 area) and large building area (60000m2). Retrofitting existing indoor coverage system， you can perform the following steps:to collect the existing distribution system design，information including topology interface，power configuration and cable type，length， etc.;verification o

26、f existing passive devices, some devices need to be replaced to ensure its support for TD-SCDMA band;the input power of each distributed antenna recalculated;the typical floors calculate the coverage of each antenna distance and blocking;According to the topology diagram of the antenna of each anten

27、na input power and typical floor, verification of the signal coverage of the floors;(6)based on each floor of the signal output power and topology, to identify the active node of the device erected position;(7) to determine the trunk routing and TD-SCDMAsignal source location. Thefollowingfour diffe

28、rent specifications of TD-SCDMAindoor distribution systemrehabilitation programs.4.1 micro-architecturalMicro-architectural interior area is smaller, the input power of the signal source is limited, distribution systems using passive devices, the TD-SCDMA signal input port coupled directly in the 2G

29、 signal source, using the same position combiners achieve distribution system shared. Micro-distribution system in the transformation of the way, we need to confirm two things: First, check whether the original passive devices support TD-SCDMA bands, if not support, couplers, power dividers and othe

30、r passive components to be replaced as broadband devices. The second is to check the adequacy the original distributed antenna density propagation loss, according to the interior space. If the original distribution system can not be used directly, we need to increase the distribution of the number o

31、f antennas, and based on this, reducing the 2G signal source power.4.2 small constructionIn the early 2G distribution system, the use of many 6D, 8D feeder, which make the 2G/3G communication system loss difference to increase. In this case, can be used the same position sub circuit simply part of t

32、he feeder replacement more coarse attenuation smaller feeder can be.Small distribution system, the same should be to consider the passives bandwidth and distributed antenna density TD-SCDMA system meets the requirements of (the same). In this scenario, it is necessary to reduce the output power of t

33、he original 2G equipment, in order to ensure that the power constant of the antenna port.4.3 medium-sized buildingsIn a medium-sized indoor distribution system, often dry release and other active equipment. At this time, TD-SCDMA signal source of a single channel can not meet the power requirements

34、of the distribution system, and therefore can not use the same location sub circuit, only end combiners shared branch distribution system, but can not share a dry road distribution system .2G/3G dry put is an optional device, not mandatory devices. In this scenario, in the case does not increase the

35、 number of distributed antenna, due to the introduction of the TD-SCDMA combiner, brought the power of the insertion loss, the output of the original 2G equipment should be slightly improved, in order to ensure that the power constant of the antenna port.4.4 large buildingsIn large indoor distributi

36、on system, usually in the optical fiber distribution system, comprising the optical amplifier and an optical coupling device. At this point, the use of a single TD-SCDMA signal source has failed to meet the power requirements of the distribution system, BBU + RRU as the signal source end Combiner.Th

37、e 2G/3G transformation box, 2G and 3G signal light dry put at combiner and convert the RF signal coverage branch distribution system in buildings. 2G Distributor distribution system using the optical transmission system in the premises the 3G Distributor distribution systems can take advantage of th

38、e building existing optical fiber, or re-laying fiber.SummaryThe construction of the TD-SCDMA indoor coverage system, to make full use of the buildings has been indoor distribution system. In this paper, the characteristics of TD-SCDMA indoor distribution system, come to the basic principle of the c

39、onstruction of the TD-SCDMA indoor distribution system. TD-SCDMA and other communication systems shared indoor distribution system power matching, micro, small, medium and large four typical 2G distribution system rehabilitation programs of the TD-SCDMA. The rehabilitation programs take full account

40、 of the 2G indoordistribution system status and technical characteristics of TD-SCDMA, change the existing distribution system and building a faster, less investment, easy maintenance.附录 B：外文翻译TD 室内分布系统的设计TD-SCDMA 室内分布系统改造方案随着高速信息技术的进步， 手持通信设备的私人用户的增加越来越多的通信服务的需求也不断提高， 其次是无线覆盖的要求也日益提高。据统计，在手机使用时，用户室

41、内比室外用户的2 倍以上的数量越多，用户伸开在室内使用手机。但是 3G 信号穿透较高频段是弱，难以实现室内覆盖的深度。TD-SCDMA 网络为基础的数据服务，而大部分的数据流量发生在室内，在TD-SCDMA网络建设这么早，引进TD-SCDMA室内热点在某些室内分布系统是非常必要的。室内覆盖工程的实施，建筑物一般流量可以增加1.4 倍，同时降低了网络负载和室外压力膨胀， 降低了网络的整体户外干扰， 提高网络服务质量。1、 TD-SCDMA室内分布系统的特性TD-SCDMA 室内分布系统相比其他分布系统，TD-SCDMA 室内分布系统具有以下特点：（1）采用智能天线系统的覆盖，容量和质量的 TD-

42、SCDMA 室内分布系统都会受到影响。 无增益成形的下行业务信道， 业务信道下行链路功率 6 分贝 ?8 分贝用较低的室外覆盖相比。 由于缺少智能天线的上行链路干扰的没有很好的控制。（2）公共信道的覆盖范围和通信信道被分开考虑。由于形成增益智能天线室内信道的业务， 所以它是一个企业的渠道覆盖面有限的系统。 TD-SCDMA 的导频功率可以灵活九月根据的，而不是一个固定值的要求。（3）业务范围基本相同。在 TD-SCDMA 系统的呼吸效应不明显，不同速率的业务基本覆盖了直径相同。（4）支持非对称数据业务，根据交通上下调整时隙配置。（5）工作频段，损耗大，不良的室内信号传播，深覆盖困难。（6）为了

43、减少室内，室外的干扰，室内，室外，更适合使用不同频率的组网方式。（7）在室内到室外区域分布覆盖区域移动，不能使用继电器切换，只能选择硬切换。（8），用于控制系统设备的延迟。 在 TD-SCDMA 基台覆盖 11.25 公里的最大半径，阙室内分布系统需要中继设备并不大传输时延，以确保之间的下行链路的干扰。（9）利用上行同步技术，提高中继器和干放的技术要求。（10）大部分的来源需要输入一个单独的GPS 天线，并选择一个合适的位置安装。2、TD-SCDMA 室内分布系统建设原则TD-SCDMA 室内分布系统建设应考虑的覆盖，容量，质量统一的需要。由邻近效应的制约， 相当大的一个天线覆盖范围应该是平衡

44、的设计。通信系统等多系统的干扰和电源共享的2G 室内分布系统之间，你需要注意的匹配。根据TD-SCDMA 技术的特点，本文提出以下的 TD-SCDMA 室内分布系统建设原则。（1）满足覆盖，容量，质量需求的目标区域 ;（2）建立完善的分销系统，利用宽带无源器件;（3）为了节约资源，尽量共享现有的室内天线分布系统 ; （4）尽量减少对现有 2G 系统的影响 ;（5）合理的电源配置，以尽量减少使用 TD-SCDMA 干放的 ; （6）尽量减少被动元件，降低了设备的插入损耗 ; （7）考虑到建设和运营维护成本 ;（8）充分考虑了支持系统，升级扩展能力。根据上述原则，需要源选择考虑以下因素：覆盖，容量

45、和建筑质量的要求，并充分考虑到建筑物的长期业务发展需要给予 ;无论源安装位置，无论取电，以满足三条件，网络条件和到位信号传输身边。覆盖范围：如切换和干扰因素， 在配电系统的设计考虑。 其中应考虑到覆盖信号功率的分配，信号链路损耗，终端接收灵敏度和功率裕度系数 ;开关包括开关室内室外，室内开关，开关内部和外部的电梯， 并且也要考虑切换区域， 开关，切换成功率的因素 ;应当考虑到干扰之前和之后的 3G 系统的开放原系统和 3G 系统之间的相互作用。为了减少室外系统的室内分布系统的影响需要满足以下条件： 除了室内信号电平的边沿价格提供商， 室内覆盖系统是不是在涵盖室外和室内分布系统的建设10 米远从

46、内置室内信号应比以上 9 分贝室外最强信号电平较高的为低，或泄漏到外面在 10 米的导频信号强度的室内信号不超过 -95dBm 的更高。3、 分布系统共享分析多个系统共享一个公共分配系统，动力匹配是最大的问题。功率匹配，需要考虑信号源的输出功率之差，在传输损失的在配电系统中，不同频带的不同要求在信号空间传播损耗的边缘覆盖场强的差值不同频带信号差异等因素。在同一个配电系统，以直接耦合巨大差异的不同系统获得剩余容许损耗系统信号源的多元性。在所有的系统中， CDMA800 ，GSM，DCS1800 和覆盖效果最好，WCDMA 和 TD-SCDMA 的影响，其次是小灵通和 WLAN 覆盖的最坏影响。在配电系统中， 约 5 分贝相差不大时， 系统分支损耗从而共享分发系统的分支并不困难。同时，为 2dB 树干损失的制度，似乎更适合共享。各种系统，但是呢，由于需要对容量和功率匹配，在干燥路面上做了不同的方式， TD-SCDMA 的多系统共享分发系统，主干是难以共享，除了小