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A Tutorial for Key Problems in the Design of Hybrid Hierarchical NoC Architectures with Wireless/RF
Chunhua Xiao,Zhangqin Huang,Da Li 한국산학기술학회 2013 SmartCR Vol.3 No.6
As processing nodes scale up, it is difficult for traditional electronic networks to supply on-chip communication efficiently due to unacceptable latency, plus power and area consumption. Alternative interconnects, such as radio frequency interconnect (RF-I) and optical interconnect, have been explored as interconnection backbones. Hybrid hierarchical architectures with both traditional interconnects and emerging interconnects have been widely adopted to get excellent trade-off between latency and power. The hybrid hierarchical architecture with a wireless/RF-I backbone is more cost-efficient and feasible due to advantages in complementary metal oxide semiconductor compatibility, compared with other alternative interconnects, and has become one of the mainstreams of chip multi-processor systems. However, how to efficiently utilize the wireless/RF-I backbone is a new challenge for designers. Based on analysis of existing typical hybrid hierarchal wireless/RF-I architectures (HHWAs), the key problems in the Design of HHWAs are proposed here, and related potential solutions are provided. In particular, strategies for resource management of wireless/RF-I are explored in detail, and different solutions are discussed. This work is expected to serve as a basis for future HHWA designs.
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The Datum Design Study of High Precision GPS Height Monitoring Network
ZHANG Qin,WANG Li,LIU Zhong,HUANG Guan-wen,DING Xiao-guang 한국항해항만학회 2006 한국항해항만학회 학술대회논문집 Vol.1 No.-
There are still some key problems having to be solved in theory and technique applications when GPS is used to monitor the vertical deformation of ground with high precision. Utilizing the GPS technology to monitor the deformation of the land subsidence and ground fissure in Xi’an, this paper puts forward advice that the datum frame of GPS network has significant influence on the precision and accuracy of the vertical deformation results by some research. The co-authors make some theoretical study of the datum error and practice by establishing the datum error models, especially the influence of scale and azimuth datum errors on GPS monitoring network. Then the datum frame design methods and arithmetic of GPS monitoring network are presented and have taken a good effect.
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