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LTE-Advanced系统中的移动顽健性优化技术研究 被引量:2
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作者 胡荣贻 彭木根 +1 位作者 张洪岩 李远 《电信科学》 北大核心 2013年第5期84-89,112,共7页
网络自优化技术目前成为移动通信网络性能研究的热点。随着移动通信技术和业务的飞速发展,移动顽健性日益成为用户体验关注的重点,尤其是移动蜂窝通信网络中的切换失败、用户掉话、通信质量差等一系列问题。为解决此类切换带来的用户体... 网络自优化技术目前成为移动通信网络性能研究的热点。随着移动通信技术和业务的飞速发展,移动顽健性日益成为用户体验关注的重点,尤其是移动蜂窝通信网络中的切换失败、用户掉话、通信质量差等一系列问题。为解决此类切换带来的用户体验和系统移动顽健性下降问题,针对一种面向切换事件和切换场景的移动顽健性优化算法(MRO算法),以用户掉话率作为性能评价标准,分别在同构和异构网络下,综合考虑切换事件和不同切换失败场景(过早切换、过晚切换、乒乓切换)的特点优化调整切换参数,并采用系统级仿真进行了性能比较。仿真结果表明,加入MRO算法后,同构场景的掉话率从10.9%下降到6.2%,异构场景的掉话率从11.3%下降到6.3%,整体性能得到大幅提升。 展开更多
关键词 切换自优化 移动顽健性优化算法 系统级仿真
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Electro-Mechanical Phase Shifters Based on MEMS Structure
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作者 Antonenko Anton Sergeevish Geraimchuk Michael Dem'yanivich Dubrovka Fedir Fedorovich 《Journal of Mechanics Engineering and Automation》 2013年第7期421-423,共3页
The aim of the study of phase shifter on MEMS (micro-electro-mechanical systems) structures was to minimize the dimensions of the design achievement. Also, the main task was to achieve the reliability and durability... The aim of the study of phase shifter on MEMS (micro-electro-mechanical systems) structures was to minimize the dimensions of the design achievement. Also, the main task was to achieve the reliability and durability of the device. The calculation was based on the optimization technique (step by step) and the modeling of individual parts of the device, namely MEMS-keys that perform the main function--switching. The urgency of this problem is the development and study of one device as a universal, that is, automatically switches from two signals simultaneously. Designs are original and devises are the intellectual property of the authors. The program for modeling phase shifters Computer Simulation Technology Microwave Studio and its results are presented in the paper. 展开更多
关键词 MEMS phase shifter dielectric layer.
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