Despite the rapid development in Worldwide Interoperability for Microwave Access (WiMAX) technologies,key technologies for the Physical Layer (PHY) still need to be further improved so as to achieve highly efficient a...Despite the rapid development in Worldwide Interoperability for Microwave Access (WiMAX) technologies,key technologies for the Physical Layer (PHY) still need to be further improved so as to achieve highly efficient and reliable communication performance,as well as to support a mobile environment with a higher transmisison rate. As an amendment to IEEE 802.16d (for fixed broadband wireless access systems),IEEE 802.16e (for mobile broadband wireless access systems) introduces the Orthogonal Frequency Division Multiplexing (OFDM) and Multiple Input Multiple Output (MIMO) technologies into the PHY,doubling the transmission rate while supporting a certain degree of mobility. In the future,more advanced Air Interface (AI) technology is to be applied in the IEEE 802.16m standard.展开更多
Running a research institute with its unique characteristics can enable the institute to do something valuable and make it develop in a big way. This article gives a panoramic review of the operational achievements ob...Running a research institute with its unique characteristics can enable the institute to do something valuable and make it develop in a big way. This article gives a panoramic review of the operational achievements obtained by the Shanghai Institute of Technological Physics of the CAS in founding hi-tech enterprises, technological creation and talent transfer. Furthermore, in line with the Institute’s actual situation, it puts forward a new developmental model for the Institute by contriving ways of integrating the Institute’s performance with economic development.展开更多
In this tutorial physics, technology, and modeling of three base technologies for realizing various branching components for a DWDM optical network would be presented.
文摘Despite the rapid development in Worldwide Interoperability for Microwave Access (WiMAX) technologies,key technologies for the Physical Layer (PHY) still need to be further improved so as to achieve highly efficient and reliable communication performance,as well as to support a mobile environment with a higher transmisison rate. As an amendment to IEEE 802.16d (for fixed broadband wireless access systems),IEEE 802.16e (for mobile broadband wireless access systems) introduces the Orthogonal Frequency Division Multiplexing (OFDM) and Multiple Input Multiple Output (MIMO) technologies into the PHY,doubling the transmission rate while supporting a certain degree of mobility. In the future,more advanced Air Interface (AI) technology is to be applied in the IEEE 802.16m standard.
文摘Running a research institute with its unique characteristics can enable the institute to do something valuable and make it develop in a big way. This article gives a panoramic review of the operational achievements obtained by the Shanghai Institute of Technological Physics of the CAS in founding hi-tech enterprises, technological creation and talent transfer. Furthermore, in line with the Institute’s actual situation, it puts forward a new developmental model for the Institute by contriving ways of integrating the Institute’s performance with economic development.
文摘In this tutorial physics, technology, and modeling of three base technologies for realizing various branching components for a DWDM optical network would be presented.
