5G站点建设动力配套解决方案探讨

当前5G使用3.5 GHz频率,频段带宽100 MHz,为了保证一定的网络覆盖以及网络质量,5G设备的功耗远大于LTE设备。基于当前主流基站设备厂家的试验网产品的功耗,结合现网基站的动力情况,分析5G基站设备对动力需求,给出相应的解决方案,提前进行站点的动力配套储备,为未来5G网络大规模快速部署建设提供必要的参考。     

端到端家庭宽带网络建设策略

伴随国家政策环境的利好,互联网视频业务迎来宝贵的发展机遇期,大视频时代即将到来,而这也将带动通信行业新一轮的发展。为了能够更好的满足家庭客户带宽需求,加快家宽基础网络建设,提升网络承载能力,提高用户粘性,必须做好家宽网络的规划建设。本文通过对家庭宽带网络端到端的分析,明晰了用户终端、出口带宽、内容网络等关键环节的问题,并提出了相应的网络建设策略。     

CoO/SrTiO3的合成及光催化分解水制氢性能

通过添加碱金属化合物矿化剂,以Sr(NO3)2和钛酸四丁酯的水解产物TiO(OH)2为原料进行固态反应,制得结晶完整性较好的SrTiO3粉末.再由浸渍法负载CoO,制备出光催化分解水催化剂CoO/SrTiO3,在400 W高压汞灯照射下,产氢速率可达到480μmol•g cat－1•h－1. SEM、UV-Vis漫反射光谱表征结果显示,合成SrTiO3时加入KOH矿化剂可使固态反应完全,SrTiO3结晶完整性提高,进而促进其光催化活性提高.确定了适宜的KOH矿化剂用量为2.0％(w).     

A thermoanalyser for studies in an atmosphere of a gaseous fluorinating agent

A thermoanalyser for studies in an atmosphere of a strong fluorinating agent has been designed. A methodology for simultaneously obtaining DTA and TG/DTG curves of physicochemical processes over a wide range of temperatures in environments of gaseous fluorine, hydrogen fluoride and chlorine trifluoride, as well as under vacuum and hydrogen, has been developed. The construction of the thermoanalyser is described in detail. To illustrate the capabilities of the thermoanalyser a study of the thermal behaviour of M₂IrCl₆ complexes with gaseous fluorine is presented.     

数据链体系结构研究

首先介绍了美军数据链的发展及体系结构，并进一步阐明在数据链体系结构下数据链的发展重点，在此基础上，分析其发展方向及带给我们的启示。     

探究建筑机电安装技术与质量控制

国内建筑行业在近年来取得了丰硕的发展成果，而在居民生活质量不断提高的基础上，建筑机电安装工程质量也备受社会的关注，同时建筑电气化以及自动化标准也不断提升，所以我们必须不断革新和加强机电安装技术，重视机电安装质量控制。     

三重介质油藏模型及其Laplace空间解

本文建立了裂缝、洞与井筒连通的三重介质油藏的试井解释模型,利用Laplace变换和构造通解法,研究了这一类线性偏微分方程的边值问题,得到了其Laplace空间解,为裂缝、洞与井筒连通油藏的试井分析提供了坚实的理论基础。     

Construction de quasimodes de Rayleigh à grande durée de vie

For the Neumann problem in linear elasticity at the exterior of a convex body with analytic boundary in two dimension, we know that exists exactly two sequences of resonances (called Rayleigh resonances), such that . If the boundary is close enough to a circle and analytic in a wide enough complex band, we construct quasimodes associated to these resonances as far as possible from the obstacle. We study the exponential decay of these quasimodes according to the geometry of the obstacle.     

Optical fiber cable and wiring techniques for fiber to the home (FTTH)

NTT group’s new medium-term management strategy calls for 20 million optical subscribers by 2010, and NTT Laboratories is pushing forward to meet this goal. Before that date, an efficient optical access network must be constructed, and afterwards, when the era of mass optical communications finally arrives, the facilities and equipment supporting the network will have to be effectively operated and maintained.At NTT Access Network Service Systems Laboratories, we are developing various technologies to correspond to the massive deployment of optical broadband services. We are also developing various new technologies for efficiently operating optical access network systems that will continue to expand in the future, and to supply our customers with good services.This paper provides an overview of the new optical access network system technologies that are being developed at NTT Access Network Service Systems Laboratories to address these issues.     

使用全色彩膜的补偿TN LCD

讲述了在液晶显示器(liquidcrystaldisplay,LCD)中利用增强Optiva薄晶体膜(thin-crystalfilm,TCF)镀层来修正色彩偏差(蓝光泄漏)和色调变化。本文对补偿扭曲向列相液晶显示器(TNLCD)提出新的测试方法并进行模拟,重点在于进一步提高色彩和等对比度显示特性。利用Quanta17in液晶显示器在有/无全色彩膜(colorperfectionfilm,CPF)两种条件下进行测试。