期刊文献+
共找到4篇文章
< 1 >
每页显示 20 50 100
Research on the Handover of a Novel Cellular Architecture in Wireless Personal Communication Systems 被引量:1
1
作者 ZHANGZu-fan DUHui-ping ZHUWei-le 《The Journal of China Universities of Posts and Telecommunications》 EI CSCD 2003年第4期45-49,共5页
A novel cellular architecture model is proposed, in which a cell coverage isdivided into annular zones by means of vertically multi-beam-splitting of base antenna for betterperformance. In this paper, the characterist... A novel cellular architecture model is proposed, in which a cell coverage isdivided into annular zones by means of vertically multi-beam-splitting of base antenna for betterperformance. In this paper, the characteristics of handover in this cellular model are studied withthe emphasis on the handover initiation probability, where the distance between the MS and the BS isused as a criterion. Simulation results show that the new model is attractive on reducing handoverprobability compared with the traditional sectoring cells. 展开更多
关键词 HANDOVER cellular architecture wireless personal communications
原文传递
On Personal Communication 被引量:1
2
作者 Zhou Jiongpan(Department of Information Engineering, Beijing University of Posts and Telecommunications Beijing 100088, P.R. China) 《The Journal of China Universities of Posts and Telecommunications》 EI CSCD 1995年第1期50-54,共5页
This paper first gives a definition for personal communication, then discusses some key problems to besolved in realizing PC and lastly gives some personal suggestions.
关键词 personal communication multi-access satellite communication
原文传递
ZTE's ZXPCS10.0 Personal Wireless Communication System
3
作者 Zhu Xiugeng (Mobile Division of ZTE Corporation,Shanghai 200233,China) 《ZTE Communications》 2003年第1期44-47,共4页
As we know, the future generation com-munication system is on the way to bedigitalized, integrated, broadband, intel-ligent, standardized and customized, andthe personal wireless communication systemmeets the demands.... As we know, the future generation com-munication system is on the way to bedigitalized, integrated, broadband, intel-ligent, standardized and customized, andthe personal wireless communication systemmeets the demands.ZTE’s personal wireless communicationsystem (ZXPCS) is based on the personalhandset system (PHS) and deployed in morethan 110 cities in China. It is working well andwidely accepted by the carriers, which makesgreat contributions to the local economy and 展开更多
关键词 ZTE’s ZXPCS10.0 personal Wireless communication System of or DE as on HLR LINE into PHONE
下载PDF
Compact triplexer in two-dimensional hexagonal lattice photonic crystals
4
作者 任宏亮 马建平 +5 位作者 温浩 覃亚丽 吴哲夫 胡卫生 姜淳 金耀辉 《Chinese Optics Letters》 SCIE EI CAS CSCD 2011年第4期87-90,共4页
We design a compact triplexer based on two-dimensional (2D) hexagonal lattice photonic crystals (PCs). A folded directional coupler (FDC) is introduced in the triplexer beside the point-defect micro-cavities and... We design a compact triplexer based on two-dimensional (2D) hexagonal lattice photonic crystals (PCs). A folded directional coupler (FDC) is introduced in the triplexer beside the point-defect micro-cavities and line-defect waveguides. Because of the reflection feedback of the FDC, high channel drop efficiency can be realized and a compact size with the order of micrometers can be maintained. The proposed device is analyzed using the plane wave expansion method, and its transmission characteristics are calculated using the finite-difference time-domain method. The footprint of the triplexer is about 12 9 μm, and its extinction ratios are less than -20 dB for 1310 nm, approximately -20 dB for 1490 nm, and under -40 dB for 1550 nm, making it a potentially essential device in future fiber-to-the-home networks. 展开更多
关键词 Crystal lattices DEFECTS Fiber optic networks Finite difference time domain method Multiplexing equipment Optical waveguides personal communication systems Time domain analysis Two dimensional
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部