http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
User Association for Full-duplex Cellular System
SooHyun Kim,Hyunsoo Kim,Yosub Park,Kwonjong Lee,Daesik Hong 대한전자공학회 2017 대한전자공학회 학술대회 Vol.2017 No.1
In the cellular network, in-band full duplex (FD) has regarded as a promising technique for improving spectral efficiency. However, implementing FD transmission in the cellular network results in severe inter-user interference (IUI). In order to mitigate IUI, in this paper, we propose distributed user association algorithm for FD cellular system where user equipments (UEs) are sequentially arriving. We first observe the impact of neighbor UEs on the user association. Based on the observation, we propose the user association algorithm for the newly arriving UE which can avoid strong IUI from neighbor UEs. The proposed algorithm only requires the UE to estimate the IUI and the strength of the received signal from the BSs, and it does not require cooperation between BSs. Thus, it can achieve practical signaling overhead. Finally, simulation results demonstrate that proposed algorithm can improve the UE throughput compared to the conventional association based on the maximum power of the received downlink signal.
김도용(Doyong Kim),마창익(Chanik Ma),김대업(Daeup Kim),한요섭(Yosub Han),이재철(Jaechul Lee) 한국자동차공학회 2002 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2002 No.5_3
Effect of various casting conditions on the microstructures and cooling behaviors of the semi-solid A356 alloy were investigated. Cooling of A356 melt was carried out under the various conditions(melt pouring temp. : 620~690℃, mold temp. : RT-350℃, atmosphere cooling or insulation). The size and morphology of primary solid phases during continuous cooling were influenced by melt and mold conditions. When melt superheat was below 35℃, it occurred undercooling and then resulted in equiaxed solidification. In case of slow cooling rate, it was effective in forming of round phases.